<SEC-DOCUMENT>0001193125-12-196552.txt : 20120430
<SEC-HEADER>0001193125-12-196552.hdr.sgml : 20120430
<ACCEPTANCE-DATETIME>20120430171058
ACCESSION NUMBER:		0001193125-12-196552
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		10
CONFORMED PERIOD OF REPORT:	20120331
FILED AS OF DATE:		20120430
DATE AS OF CHANGE:		20120430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PATTERSON UTI ENERGY INC
		CENTRAL INDEX KEY:			0000889900
		STANDARD INDUSTRIAL CLASSIFICATION:	DRILLING OIL & GAS WELLS [1381]
		IRS NUMBER:				752504748
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22664
		FILM NUMBER:		12796193

	BUSINESS ADDRESS:	
		STREET 1:		4510 LAMESA HWY
		STREET 2:		P O DRAWER 1416
		CITY:			SNYDER
		STATE:			TX
		ZIP:			79549
		BUSINESS PHONE:		9155731104

	MAIL ADDRESS:	
		STREET 1:		P O DRAWER 1416
		CITY:			SNYDER
		STATE:			TX
		ZIP:			79550

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PATTERSON ENERGY INC
		DATE OF NAME CHANGE:	19940228
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>d314216d10q.htm
<DESCRIPTION>FORM 10-Q
<TEXT>
<HTML><HEAD>
<TITLE>Form 10-Q</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:4px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>UNITED STATES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="3"><B>Washington,&nbsp;D.C. 20549 </B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>Form&nbsp;10-Q
</B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B></B><FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT><B></B><B></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>QUARTERLY REPORT PURSUANT TO SECTION&nbsp;13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>For the quarterly period ended March&nbsp;31, 2012 </B></FONT></P>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>or </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B></B><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT><B></B><B></B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>TRANSITION REPORT PURSUANT TO SECTION&nbsp;13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 </B></FONT></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>For the transition period from &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; to
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Commission file number 0-22664 </B></FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="6"><B>Patterson-UTI Energy, Inc. </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>(Exact name of registrant as specified in its charter) </B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="50%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="48%"></TD></TR>


<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>DELAWARE</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>75-2504748</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(State or other jurisdiction of</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>incorporation or organization)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(I.R.S. Employer</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Identification No.)</B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>450 GEARS ROAD, SUITE 500</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>HOUSTON, TEXAS</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>77067</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Address of principal executive offices)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Zip Code)</B></FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(281)&nbsp;765-7100 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>(Registrant&#146;s telephone number, including area code) </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>N/A
</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Former name, former address and former fiscal year, if changed since last report) </B></FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant (1)&nbsp;has filed all reports required to be filed by Section&nbsp;13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12&nbsp;months (or for such shorter period that the registrant was required to file such reports), and (2)&nbsp;has been subject to such filing requirements for the past
90&nbsp;days.&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT> </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files)&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT> </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller
reporting company. See the definitions of &#147;large accelerated filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2 of the Exchange Act: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="16%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="60%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="20%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="1%"></TD></TR>


<TR>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Large&nbsp;accelerated&nbsp;filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accelerated&nbsp;filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-accelerated filer</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Smaller&nbsp;reporting&nbsp;company</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate by check mark whether the registrant is a shell company (as defined in Rule&nbsp;12b-2 of the
Exchange Act).&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT> </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Indicate the number of shares outstanding of each of the issuer&#146;s classes of common stock, as of the latest practicable date.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">156,118,703 shares of common stock, $0.01&nbsp;par value, as of April 30, 2012 </FONT></P>
<P STYLE="font-size:8px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P>

<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="toc"></A>TABLE OF CONTENTS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>PART&nbsp;I&nbsp;&#151; FINANCIAL INFORMATION </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="6%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="89%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD COLSPAN="3" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1">Page</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;1.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_1">Financial Statements</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_2">Unaudited consolidated balance sheets</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_3">Unaudited consolidated statements of operations</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_4">Unaudited consolidated statements of comprehensive income</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_5">Unaudited consolidated statements of changes in stockholders&#146; equity</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_6">Unaudited consolidated statements of cash flows</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_7">Notes to unaudited consolidated financial statements</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;2.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_8">Management&#146;s Discussion and Analysis of Financial Condition and Results of
Operations</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">18</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;3.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_9">Quantitative and Qualitative Disclosures About Market Risk</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;4.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_10">Controls and Procedures</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">26</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD HEIGHT="16" COLSPAN="3"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A HREF="#tx314216_11">PART&nbsp;II&nbsp;&#151; OTHER INFORMATION </A></B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;2.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_12">Unregistered Sales of Equity Securities and Use of Proceeds</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">26</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">ITEM&nbsp;6.</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_13">Exhibits</A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><A HREF="#tx314216_14">Signature </A></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
</TABLE>

<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART&nbsp;I&nbsp;&#151; FINANCIAL INFORMATION </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_1"></A>ITEM&nbsp;1.&nbsp;</B><B><I>Financial Statements</I></B><B> </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>The following unaudited consolidated financial statements include all adjustments which are, in the opinion of management, necessary
for a fair statement of the results for the interim periods presented.</B> </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_2"></A>PATTERSON-UTI ENERGY,
INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED BALANCE SHEETS </B></FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(unaudited, in thousands, except share data) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="82%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>ASSETS</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Current assets:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and cash equivalents</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17,825</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23,946</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts receivable, net of allowance for doubtful accounts of $6,540 and $4,887 at March&nbsp;31, 2012 and December&nbsp;31,
2011, respectively</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">559,548</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">518,109</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Inventory</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">28,585</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">31,306</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred tax assets, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">116,543</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">142,725</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">44,903</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48,864</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total current assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">767,404</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">764,950</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property and equipment, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,308,263</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,167,266</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Goodwill and intangible assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">174,546</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">175,573</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deposits on equipment purchases</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,643</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">99,543</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15,976</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,569</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,363,832</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,221,901</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>LIABILITIES AND STOCKHOLDERS&#146; EQUITY</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="top"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Current liabilities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">274,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">241,610</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Federal and state income taxes payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8,241</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,473</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued expenses</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">152,442</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">164,629</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Current portion of long-term debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total current liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">445,471</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">418,712</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Borrowings under revolving credit facility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">108,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">110,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other long-term debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">380,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">382,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred tax liabilities, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">808,857</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">786,632</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6,529</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,426</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,749,357</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,705,270</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Commitments and contingencies (see Note 11)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stockholders&#146; equity:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Preferred stock, par value $.01; authorized 1,000,000 shares, no shares issued</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Common stock, par value $.01; authorized 300,000,000 shares with 183,315,514 and 183,295,350 issued and 155,827,260 and
155,807,779 outstanding at March&nbsp;31, 2012 and December&nbsp;31, 2011, respectively</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,833</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,833</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Additional paid-in capital</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">846,550</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">840,731</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Retained earnings</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,368,853</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,279,367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accumulated other comprehensive income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">22,013</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">19,459</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Treasury stock, at cost, 27,488,254 shares and 27,487,571 shares at March&nbsp;31, 2012 and December&nbsp;31, 2011,
respectively</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(624,774</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(624,759</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total stockholders&#146; equity</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,614,475</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,516,631</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total liabilities and stockholders&#146; equity</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,363,832</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,221,901</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accompanying notes are an integral part of these unaudited consolidated financial statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">1 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_3"></A>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF OPERATIONS </B></FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(unaudited, in thousands, except per share data) </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="84%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months
Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating revenues:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">489,482</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">377,358</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">241,722</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">179,659</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,717</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,387</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total operating revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">745,921</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">567,404</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating costs and expenses:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">282,649</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">218,699</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166,857</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">118,575</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,730</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,997</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation, depletion, amortization and impairment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122,953</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">96,215</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selling, general and administrative</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13,868</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15,975</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net gain on asset disposals</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2,400</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,604</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Provision for bad debts</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,600</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total operating costs and expenses</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">588,257</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">449,857</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">157,664</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">117,547</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other income (expense):</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">43</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4,582</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3,889</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">55</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">119</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total other expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4,473</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3,727</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations before income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,191</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">113,820</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income tax expense:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Current</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,510</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,582</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48,407</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38,619</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total income tax expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">55,917</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">42,201</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,619</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations, net of income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,252</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Basic income (loss) per common share:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations, net of income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Diluted income (loss) per common share:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations, net of income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Weighted average number of common shares outstanding:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Basic</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">154,625</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Diluted</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">155,401</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">154,653</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash dividends per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.05</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.05</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accompanying notes are an integral part of these unaudited consolidated financial statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">2 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_4"></A>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME </B></FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(unaudited, in thousands) </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="86%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months
Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net Income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,252</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other comprehensive income, net of taxes of $0 and $0, respectively:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Foreign currency translation adjustment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,554</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,698</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total comprehensive income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">99,828</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">73,950</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accompanying notes are an integral part of these unaudited consolidated financial statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">3 </FONT></P>


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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_5"></A>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS&#146; EQUITY </B></FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(unaudited, in thousands) </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="6" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ROWSPAN="3" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Additional</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Paid-in<BR>Capital
</B></FONT></TD>
<TD VALIGN="bottom" ROWSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ROWSPAN="3" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Retained<BR>Earnings</B></FONT></TD>
<TD VALIGN="bottom" ROWSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ROWSPAN="3" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Accumulated</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Other</B></FONT><br>
<FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Comprehensive<BR>Income</B></FONT></TD>
<TD VALIGN="bottom" ROWSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ROWSPAN="3" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Treasury<BR>Stock</B></FONT></TD>
<TD VALIGN="bottom" ROWSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ROWSPAN="3" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom" ROWSPAN="3"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Common Stock</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Number<BR>of Shares</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Amount</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Balance, December&nbsp;31, 2011</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">183,295</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,833</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">840,731</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,279,367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">19,459</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(624,759</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,516,631</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Foreign currency translation adjustment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,554</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,554</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Issuance of restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Forfeitures of restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exercise of stock options</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">195</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">195</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stock-based compensation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,458</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,458</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Tax benefit related to stock-based compensation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Payment of cash dividends</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(7,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(7,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Purchase of treasury stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(15</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(15</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Balance, March&nbsp;31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">183,316</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,833</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">846,550</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,368,853</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">22,013</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(624,774</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,614,475</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accompanying notes are an integral part of these unaudited consolidated financial statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">4 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_6"></A>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSOLIDATED STATEMENTS OF CASH FLOWS </B></FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(unaudited, in thousands) </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="84%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months
Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash flows from operating activities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,252</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Adjustments to reconcile net income to net cash provided by operating activities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation, depletion, amortization and impairment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">122,953</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">96,215</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Provision for bad debts</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,600</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dry holes and abandonments</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">56</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred income tax expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48,407</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38,619</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stock-based compensation expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,458</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,307</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net gain on asset disposals</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2,400</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,604</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Changes in operating assets and liabilities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts receivable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(38,109</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(48,152</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income taxes receivable/payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,807</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,332</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Inventory and other assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,332</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,205</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accounts payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">30,418</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,053</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued expenses</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(12,234</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5,349</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other liabilities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(897</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">520</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash used in operating activities of discontinued operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(339</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash provided by operating activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">263,665</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">173,107</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash flows from investing activities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Purchase of property and equipment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(263,403</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(182,552</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Proceeds from disposal of assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,651</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,954</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash provided by investing activities of discontinued operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash used in investing activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(258,752</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(155,098</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash flows from financing activities:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Purchase of treasury stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(15</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(20</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividends paid</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(7,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(7,708</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Tax benefit related to stock-based compensation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">335</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Repayment of other long-term debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,250</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Proceeds from borrowing under revolving credit facility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Repayment of borrowing under revolving credit facility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(56,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Proceeds from exercise of stock options</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">195</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">399</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash used in financing activities</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(11,442</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(8,244</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Effect of foreign exchange rate changes on cash</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">408</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">293</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:7.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net increase (decrease) in cash and cash equivalents</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(6,121</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,058</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and cash equivalents at beginning of period</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23,946</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">27,612</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Cash and cash equivalents at end of period</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17,825</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">37,670</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Supplemental disclosure of cash flow information:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net cash paid during the period for:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest, net of capitalized interest of $1,968 in 2012 and $2,043 in 2011</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(364</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,687</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,390</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(179</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Supplemental investing and financing information:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net increase in payables for purchase of property and equipment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,553</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17,221</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:5.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net (increase) decrease in deposits on equipment purchases</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,900</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(20,503</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
</TABLE>
 <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accompanying notes are an integral part of these unaudited consolidated financial statements. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">5 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_7"></A>PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES </B></FONT></P>
 <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS </B></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>1.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Basis of Consolidation and Presentation </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The unaudited interim consolidated financial statements include the accounts of Patterson-UTI Energy, Inc. (the
&#147;Company&#148;) and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Except for wholly-owned subsidiaries, the Company has no controlling financial interests in any entity which would
require consolidation. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The unaudited interim consolidated financial statements have been prepared by management of the
Company pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in
the United States of America have been omitted pursuant to such rules and regulations, although the Company believes the disclosures included either on the face of the financial statements or herein are sufficient to make the information presented
not misleading. In the opinion of management, all adjustments which are of a normal recurring nature considered necessary for a fair statement of the information in conformity with accounting principles generally accepted in the United States of
America have been included. The Unaudited Consolidated Balance Sheet as of December&nbsp;31, 2011, as presented herein, was derived from the audited consolidated balance sheet of the Company, but does not include all disclosures required by
accounting principles generally accepted in the United States of America. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company&#146;s
Annual Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2011. The results of operations for the three months ended March&nbsp;31, 2012 are not necessarily indicative of the results to be expected for the full year. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The U.S.&nbsp;dollar is the functional currency for all of the Company&#146;s operations except for its Canadian operations, which uses
the Canadian dollar as its functional currency. The effects of exchange rate changes are reflected in accumulated other comprehensive income, which is a separate component of stockholders&#146; equity. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The carrying values of cash and cash equivalents, trade receivables and accounts payable approximate fair value. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company provides a dual presentation of its net income (loss) per common share in its unaudited consolidated statements of
operations: Basic net income (loss) per common share (&#147;Basic EPS&#148;) and diluted net income (loss) per common share (&#147;Diluted EPS&#148;). </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Basic EPS excludes dilution and is computed by first allocating earnings between common stockholders and holders of non-vested shares of restricted stock. Basic EPS is then determined by dividing the
earnings attributable to common stockholders by the weighted average number of common shares outstanding during the period, excluding non-vested shares of restricted stock. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Diluted EPS is based on the weighted average number of common shares outstanding plus the dilutive effect of potential common shares, including stock options, non-vested shares of restricted stock and
restricted stock units. The dilutive effect of stock options and restricted stock units is determined using the treasury stock method. The dilutive effect of non-vested shares of restricted stock is based on the more dilutive of the treasury stock
method or the two-class method, assuming a reallocation of undistributed earnings to common stockholders after considering the dilutive effect of potential common shares other than non-vested shares of restricted stock. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">6 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following table presents information necessary to calculate income from continuing
operations per share, loss from discontinued operations per share and net income per share for the three months ended March&nbsp;31, 2012 and 2011 as well as potentially dilutive securities excluded from the weighted average number of diluted common
shares outstanding, as their inclusion would have been anti-dilutive (in thousands, except per share amounts): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="84%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months
Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>BASIC EPS:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">97,274</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,619</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Adjust for income attributed to holders of non-vested restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(742</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(501</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations attributed to common stockholders</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">96,532</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,118</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Adjust for loss attributed to holders of non-vested restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations attributed to common stockholders</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(364</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">154,625</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Basic income from continuing operations per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Basic loss from discontinued operations per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Basic net income per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>DILUTED EPS:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations attributed to common stockholders</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">96,532</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,118</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Add incremental earnings related to potential common shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Adjusted income from continuing operations attributed to common stockholders</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">96,532</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">71,122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">154,625</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,122</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Add dilutive effect of potential common shares</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">776</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,531</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Weighted average number of diluted common shares outstanding</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">155,401</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">154,653</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Diluted income from continuing operations per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Diluted loss from discontinued operations per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Diluted net income per common share</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.62</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.46</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Potentially dilutive securities excluded as anti-dilutive</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,229</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">725</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Discontinued Operations </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On January&nbsp;27, 2011, the stock of the Company&#146;s electric wireline subsidiary, Universal Wireline, Inc., was
sold in a cash transaction for $25.5 million. Except for inventory, the working capital of Universal Wireline, Inc. was excluded from the sale and retained by a subsidiary of the Company. Universal Wireline, Inc. was formed in 2010 to acquire the
electric wireline business of Key Energy Services, Inc. The results of operations of this business have been presented as results of discontinued operations in these consolidated financial statements. Upon being classified as held for sale, the
carrying value of the assets to be disposed of were reduced to fair value less estimated costs to sell resulting in a charge of $2.2 million in 2010. Due to the fact that the carrying value of the assets had been adjusted to net realizable value
during 2010, no significant additional gain or loss was recognized in connection with the sale in 2011. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">7 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Summarized operating results from discontinued operations for the three months ended
March&nbsp;31, 2012, and 2011 are shown below (in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="83%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Electric wireline revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,104</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss before income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(576</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income tax benefit</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">209</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loss from discontinued operations, net of income tax</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>3.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Stock-based Compensation </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company uses share-based payments to compensate employees and non-employee directors. The Company recognizes the
cost of share-based payments under the fair-value-based method. Share-based awards consist of equity instruments in the form of stock options, restricted stock or restricted stock units and have included service and, in certain cases, performance
conditions. The Company&#146;s share-based awards also include both cash-settled and share-settled performance unit awards. Cash-settled performance unit awards are accounted for as liability awards. Share-settled performance unit awards are
accounted for as equity awards. The Company issues shares of common stock when vested stock options are exercised, when restricted stock is granted and when restricted stock units and share-settled performance unit awards vest. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Stock Options.</I>&nbsp;The Company estimates the grant date fair values of stock options using the Black-Scholes-Merton valuation
model. Volatility assumptions are based on the historic volatility of the Company&#146;s common stock over the most recent period equal to the expected term of the options as of the date the options are granted. The expected term assumptions are
based on the Company&#146;s experience with respect to employee stock option activity. Dividend yield assumptions are based on the expected dividends at the time the options are granted. The risk-free interest rate assumptions are determined by
reference to United States Treasury yields. Weighted-average assumptions used to estimate the grant date fair values for stock options granted in the three month periods ended March&nbsp;31, 2012 and 2011 follow: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="84%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Volatility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48.72</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">47.43</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Expected term (in years)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Dividend yield</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.00</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.93</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Risk-free interest rate</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.83</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.01</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">8 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stock option activity from January&nbsp;1, 2012 to March&nbsp;31, 2012 follows: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="78%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Underlying</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Shares</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Weighted</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Exercise</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Price</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Outstanding at January&nbsp;1, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,081,295</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.73</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Granted</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">40,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">19.98</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exercised</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(13,300</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.64</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Outstanding at March&nbsp;31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,107,995</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.74</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Exercisable at March&nbsp;31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6,279,644</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.52</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Restricted Stock.</I>&nbsp;For all restricted stock awards to date, shares of common stock were issued
when the awards were made. Non-vested shares are subject to forfeiture for failure to fulfill service conditions and, in certain cases, performance conditions. Non-forfeitable dividends are paid on non-vested shares of restricted stock. The Company
uses the straight-line method to recognize periodic compensation cost over the vesting period. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted stock activity from
January&nbsp;1, 2012 to March&nbsp;31, 2012 follows: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Shares</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Weighted</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Grant&nbsp;Date</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fair Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-vested restricted stock outstanding at January&nbsp;1, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,213,799</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">24.13</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Granted</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">19.98</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vested</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(59,459</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.49</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Forfeited</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5,136</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.70</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-vested restricted stock outstanding at March 31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,161,204</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">24.53</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Restricted Stock Units.</I>&nbsp;For all restricted stock unit awards made to date, shares of common
stock are not issued until the units vest. Restricted stock units are subject to forfeiture for failure to fulfill service conditions. Non-forfeitable cash dividend equivalents are paid on non-vested restricted stock units. The Company uses the
straight-line method to recognize periodic compensation cost over the vesting period. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restricted stock unit activity from
January&nbsp;1, 2012 to March&nbsp;31, 2012 follows: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="79%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Shares</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Weighted</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Grant&nbsp;Date</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fair Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-vested restricted stock units outstanding at January&nbsp;1, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17,501</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.47</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Granted</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vested</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Forfeited</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-vested restricted stock units outstanding at March 31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17,501</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.47</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%;padding-bottom:0px;"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Performance Unit Awards.</I>&nbsp;In 2009, the Company granted cash-settled
performance unit awards to certain executive officers (the &#147;2009 Performance Units&#148;). The 2009 Performance Units provided for those executive officers to receive a cash payment upon the achievement of certain performance goals established
by the Compensation Committee during a specified period. The performance period for the 2009 Performance Units was the period from April&nbsp;1, 2009 through March&nbsp;31, 2012. The performance goals for the 2009 Performance Units were tied to the
Company&#146;s total shareholder return for the performance period as compared to total shareholder return for a peer group determined by the Compensation Committee of the Board of Directors. These goals were considered to be market conditions under
the relevant accounting standards and the market conditions were factored into the determination of the fair value of the performance units. Generally, the recipients would receive a base payment if the Company&#146;s total shareholder return was
positive and, when compared to the peer group, was at or above the 25</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile but less than the 50</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile, two times the base if at or above the 50</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile but less than the 75</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile, and four times the base if at the 75</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile or higher. The total base amount with respect to the 2009 Performance Units was approximately $1.7 million. Because the 2009 Performance Units were settled in cash at the end of the
performance period, they were accounted for as liability awards and the Company&#146;s pro-rated obligation was measured at estimated fair value at the end of each reporting period using a Monte Carlo simulation model. At March&nbsp;31, 2012, the
performance period ended and the Company&#146;s total shareholder return was at the 46</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT
STYLE="font-family:Times New Roman" SIZE="2"> percentile. The resulting cash payments totaling $1.7 million were paid in April 2012 and are included in </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">9 </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
the caption &#147;accrued expenses&#148; in the liabilities section of the consolidated balance sheet at March&nbsp;31, 2012. A compensation benefit associated with the 2009 Performance Units of
approximately $1.9 million was recognized for the three months ended March&nbsp;31, 2012 and compensation expense associated with the 2009 Performance Units of approximately $1.2 million was recognized for the three months ended March&nbsp;31, 2011.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%;padding-bottom:0px;"><FONT STYLE="font-family:Times New Roman" SIZE="2">In 2010 and 2011, the Company granted stock-settled performance unit awards to certain executive officers
(the &#147;2010 Performance Units&#148; and the &#147;2011 Performance Units&#148;, respectively). The 2010 Performance Units and the 2011 Performance Units provide for those executive officers to receive a grant of shares of stock upon the
achievement of certain performance goals established by the Compensation Committee during a specified period. The performance period for the 2010 Performance Units is the period from April&nbsp;1, 2010 through March&nbsp;31, 2013, but can extend
through March&nbsp;31, 2015 in certain circumstances. The performance period for the 2011 Performance Units is the period from April&nbsp;1, 2011 through March 31, 2014, but can extend through March&nbsp;31, 2016 in certain circumstances. The
performance goals for the 2010 Performance Units and the 2011 Performance Units are tied to the Company&#146;s total shareholder return for the performance period as compared to total shareholder return for a peer group determined by the
Compensation Committee. These goals are considered to be market conditions under the relevant accounting standards and the market conditions were factored into the determination of the fair value of the performance units. Generally, the recipients
will receive a base number of shares if the Company&#146;s total shareholder return is positive and, when compared to the peer group, is at the 25</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"> percentile, two times the base if at the 50</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"> percentile, and four times the base if at the 75</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"> percentile or higher. The grant of shares when achievement is between the 25</FONT><FONT
STYLE="font-family:Times New Roman" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"> and 75</FONT><FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">th</SUP></FONT><FONT STYLE="font-family:Times New Roman" SIZE="2"> percentile will be determined on a pro-rata basis. The total base number of shares with respect to the 2010
Performance Units is 89,375 shares and the total base number of shares with respect to the 2011 Performance Units is 72,188 shares. Because the 2010 Performance Units and 2011 Performance Units are stock-settled awards, they are accounted for as
equity awards and measured at fair value on the date of grant using a Monte Carlo simulation model. The fair value of the 2010 Performance Units as of the date of grant was approximately $3.1 million and the fair value of the 2011 Performance Units
as of the date of grant was approximately $5.6 million. These amounts are charged to expense on a straight-line basis over the performance period. Compensation expense associated with the 2010 Performance Units was approximately $260,000 for the
three months ended March&nbsp;31, 2012 and 2011, respectively. Compensation expense associated with the 2011 Performance Units was approximately $464,000 for the three months ended March&nbsp;31, 2012. </FONT></P>
<P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Property and Equipment </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property and equipment consisted of the following at March&nbsp;31, 2012 and December&nbsp;31, 2011 (in thousands):
</FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="72%"></TD>
<TD VALIGN="bottom" WIDTH="6%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="6%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Equipment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,899,102</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,730,925</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas properties</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">137,548</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">131,812</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Buildings</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">64,426</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">64,090</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Land</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11,467</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11,467</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">5,112,543</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,938,294</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Less accumulated depreciation and depletion</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,804,280</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,771,028</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property and equipment, net</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,308,263</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,167,266</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">10 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>



<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Business Segments </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s revenues, operating profits and identifiable assets are primarily attributable to three business
segments: (i)&nbsp;contract drilling of oil and natural gas wells, (ii)&nbsp;pressure pumping services and (iii)&nbsp;the investment, on a working interest basis, in oil and natural gas properties. Each of these segments represents a distinct type
of business. These segments have separate management teams which report to the Company&#146;s chief operating decision maker. The results of operations in these segments are regularly reviewed by the chief operating decision maker for purposes of
determining resource allocation and assessing performance. As discussed in Note 2, included in discontinued operations for the three months ended March&nbsp;31, 2011 are the operating results for an electric wireline business that was acquired on
October&nbsp;1, 2010 and sold in January 2011. Separate financial data for each of our business segments is provided in the table below (in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="78%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months
Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">490,703</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">378,025</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">241,722</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">179,659</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,717</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,387</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total segment revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">747,142</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">568,071</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Elimination of intercompany revenues (a)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1,221</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(667</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">745,921</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">567,404</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income before income taxes:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">111,771</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">80,519</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">46,787</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41,378</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,518</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,818</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166,076</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">126,715</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Corporate and other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(10,812</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(10,772</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net gain on asset disposals (b)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,400</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,604</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">43</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(4,582</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3,889</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">55</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">119</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Income from continuing operations before income taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,191</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">113,820</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="74%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Identifiable assets:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,384,088</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,252,116</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">789,213</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">748,643</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48,118</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">44,990</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Corporate and other (c)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">142,413</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">176,152</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,363,832</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,221,901</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="line-height:8px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000;width:10%">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Consists of contract drilling intercompany revenues for drilling services provided to the oil and natural gas exploration and production segment.
</FONT></TD></TR></TABLE>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or
losses have been separately presented and excluded from the results of specific segments. </FONT></TD></TR></TABLE>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Corporate and other assets primarily include cash on hand, income taxes receivable and certain deferred tax assets. </FONT></TD></TR></TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">11 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>



<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>6.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Goodwill and Intangible Assets </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Goodwill </I>&#151; Goodwill by operating segment as of March&nbsp;31, 2012 and changes for the three months then
ended are as follows (in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="72%"></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Contract</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Drilling</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Pressure</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Pumping</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Balance December&nbsp;31, 2011</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">86,234</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">67,575</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,809</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Changes to goodwill</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Balance March&nbsp;31, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">86,234</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">67,575</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">153,809</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">There were no accumulated impairment losses as of March&nbsp;31, 2012 or December&nbsp;31, 2011.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Goodwill is evaluated at least annually on December&nbsp;31 to determine if the fair value of recorded goodwill has decreased
below its carrying value. For purposes of impairment testing, goodwill is evaluated at the reporting unit level. The Company&#146;s reporting units for impairment testing have been determined to be its operating segments. Goodwill impairment is
measured using a two-step impairment test. The first step is to compare the fair value of an entity&#146;s reporting units to the respective carrying value of those reporting units. If the carrying value of a reporting unit exceeds its fair value
the second step of the impairment test is performed whereby the fair value of the reporting unit is allocated to its identifiable tangible and intangible assets and liabilities with any remaining fair value representing the fair value of goodwill.
If the resulting fair value of goodwill is less than the carrying value of goodwill, an impairment loss would be recognized in the amount of the shortfall. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>Intangible Assets </I>&#151; Intangible assets were recorded in the pressure pumping operating segment in connection with the fourth quarter 2010 acquisition of the assets of a pressure pumping
business. As a result of the purchase price allocation, the Company recorded intangible assets related to a non-compete agreement and the customer relationships acquired. These intangible assets were recorded at fair value on the date of
acquisition. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The non-compete agreement has a term of three years from October&nbsp;1, 2010. The value of this agreement was
estimated using a with and without scenario where cash flows were projected through the term of the agreement assuming the agreement is in place and compared to cash flows assuming the non-compete agreement was not in place. The intangible asset
associated with the non-compete agreement is being amortized on a straight-line basis over the three-year term of the agreement. Amortization expense of $117,000 was recorded in the three months ended March&nbsp;31, 2012 and 2011 associated with the
non-compete agreement. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The value of the customer relationships was estimated using a multi-period excess earnings model to
determine the present value of the projected cash flows associated with the customers in place at the time of the acquisition and taking into account a contributory asset charge. The resulting intangible asset is being amortized on a straight-line
basis over seven years. Amortization expense of $911,000 was recorded in the three months ended March&nbsp;31, 2012 and 2011 associated with customer relationships. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The following table presents the gross carrying amount and accumulated amortization of intangible assets as of March&nbsp;31, 2012 (in thousands): </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="62%"></TD>
<TD VALIGN="bottom" WIDTH="7%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="7%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="7%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Gross<BR>Carrying</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Amount</B></FONT></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Accumulated</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Amortization</B></FONT></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Net&nbsp;Carrying</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Amount</B></FONT></TD>

<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Non-compete agreement</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,400</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(700</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">700</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Customer relationships</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5,463</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20,037</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total intangible assets</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">26,900</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(6,163</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20,737</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">12 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>



<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>7.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Accrued Expenses </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued expenses consisted of the following at March&nbsp;31, 2012 and December&nbsp;31, 2011 (in thousands):
</FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="74%"></TD>
<TD VALIGN="bottom" WIDTH="6%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="6%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31,</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Salaries, wages, payroll taxes and benefits</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38,601</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">58,692</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Workers&#146; compensation liability</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">65,778</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">66,121</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Property, sales, use and other taxes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">12,591</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11,850</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Insurance, other than workers&#146; compensation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,988</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6,012</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accrued interest payable</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8,429</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,937</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred revenue&#151;current</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6,944</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,229</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2009 Performance Unit Awards</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,719</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,640</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,392</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">6,148</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">152,442</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">164,629</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Deferred revenue was recorded in the fourth quarter of 2010 in the purchase price allocation associated
with the Company&#146;s acquisition of a pressure pumping business. The deferred revenue relates to out-of-market pricing agreements that were in place at the acquired business at the time of the acquisition. The deferred revenue will be recognized
as pressure pumping revenue over the remaining term of the pricing agreements. Deferred revenue of approximately $1.8 million and $2.9 million was recognized in the three months ended March&nbsp;31, 2012 and 2011, respectively, related to these
pricing agreements. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>8.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Asset Retirement Obligation </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company records a liability for the estimated costs to be incurred in connection with the abandonment of oil and
natural gas properties in the future. This liability is included in the caption &#147;other&#148; in the liabilities section of the consolidated balance sheet. The following table describes the changes to the Company&#146;s asset retirement
obligations during the three months ended March&nbsp;31, 2012 and 2011 (in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="82%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three&nbsp;Months&nbsp;Ended</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;
31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Balance at beginning of year</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,455</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,063</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Liabilities incurred</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">106</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">65</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Liabilities settled</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(68</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(15</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accretion expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">37</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">35</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revision in estimated costs of plugging oil and natural gas wells</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">550</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Asset retirement obligation at end of period</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,080</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,146</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>9.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Long Term Debt </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Credit Facilities &#151;</I> On August&nbsp;19, 2010, the Company entered into a Credit Agreement (the &#147;Credit
Agreement&#148;) with Wells Fargo Bank, N.A., as administrative agent, letter of credit issuer, swing line lender and lender, and each of the other letter of credit issuer and lender parties thereto. The Credit Agreement is a committed senior
unsecured credit facility that includes a revolving credit facility and a term loan facility. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The revolving credit facility
permits aggregate borrowings of up to $400 million and contains a letter of credit facility that is limited to $150 million and a swing line facility that is limited to $40 million. Subject to customary conditions, the Company may request that the
lenders&#146; aggregate commitments with respect to the revolving credit facility be increased by up to $100 million, not to exceed total commitments of $500 million. The maturity date for the revolving facility is August&nbsp;19, 2013. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The term loan facility provided for a loan of $100 million which was funded on August&nbsp;19, 2010. The term loan facility is payable in
quarterly principal installments commencing November&nbsp;19, 2010. The installment amounts vary from 1.25% of the original principal amount for each of the first four quarterly installments, 2.50% of the original principal amount for each of the
subsequent eight quarterly installments and 5.00% of the original principal amount for the next subsequent three quarterly installments, with the remainder becoming due at maturity. The maturity date for the term loan facility is August&nbsp;19,
2014. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">13 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loans under the Credit Agreement bear interest by reference, at the Company&#146;s election,
to the LIBOR rate or base rate. The applicable margin on LIBOR rate loans varies from 2.75% to 3.75% and the applicable margin on base rate loans varies from 1.75% to 2.75%, in each case determined based upon the Company&#146;s debt to
capitalization ratio. As of December&nbsp;31, 2011, the applicable margin on LIBOR rate loans was 2.75% and the applicable margin on base rate loans was 1.75%. A letter of credit fee is payable by the Company equal to the applicable margin for LIBOR
rate loans times the daily amount available to be drawn under outstanding letters of credit. The commitment fee payable to the lenders for the unused portion of the revolving credit facility varies from 0.50% to 0.75% based upon the Company&#146;s
debt to capitalization ratio and was 0.50% as of March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Each domestic subsidiary of the Company other than any
immaterial subsidiary has unconditionally guaranteed all existing and future indebtedness and liabilities of the Company and the other guarantors arising under the Credit Agreement and other loan documents. Such guarantees also cover obligations of
the Company and any subsidiary of the Company arising under any interest rate swap contract with any person while such person is a lender or affiliate of a lender under the Credit Agreement. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Credit Agreement contains customary representations, warranties, indemnities and affirmative and negative covenants. The Credit
Agreement also requires compliance with two financial covenants. The Company must not permit its debt to capitalization ratio to exceed 45% at any time. The Credit Agreement generally defines the debt to capitalization ratio as the ratio of
(a)&nbsp;total borrowed money indebtedness to (b)&nbsp;the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit
the interest coverage ratio as of the last day of a fiscal quarter to be less than 3.00 to 1.00. The Credit Agreement generally defines the interest coverage ratio as the ratio of earnings before interest, taxes, depreciation and amortization
(&#147;EBITDA&#148;) of the four prior fiscal quarters to interest charges for the same period. The Company was in compliance with these covenants at March 31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, the Company had $90.0 million principal amount outstanding under the term loan facility at an interest rate of 3.00% and approximately $109 million principal amount outstanding
under the revolving credit facility at a weighted average interest rate of 3.28%. The carrying value of the balances outstanding under the term loan facility and the revolving credit facility approximate fair value due to the frequency at which the
interest rate resets. The Company had $40.6 million in letters of credit outstanding at March&nbsp;31, 2012 and, as a result, had available borrowing capacity of approximately $251 million at that date. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Senior Notes &#151; </I>On October&nbsp;5, 2010, the Company completed the issuance and sale of $300 million in aggregate principal
amount of its 4.97% Series A Senior Notes due October&nbsp;5, 2020 (the &#147;Notes&#148;) in a private placement. The fair value of the Notes at March&nbsp;31, 2012 was approximately $323 million based on discounted cash flows associated with the
Notes using current market rates of interest. The Notes are senior unsecured obligations of the Company which rank equally in right of payment with all other unsubordinated indebtedness of the Company. The Notes are guaranteed on a senior unsecured
basis by each of the existing domestic subsidiaries of the Company other than immaterial subsidiaries. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Notes bear
interest at a rate of 4.97%&nbsp;per annum. The Company will pay interest on the Notes on April&nbsp;5 and October&nbsp;5 of each year. The Notes will mature on October&nbsp;5, 2020. The Notes are prepayable at the Company&#146;s option, in whole or
in part, provided that in the case of a partial prepayment, prepayment must be in an amount not less than 5% of the aggregate principal amount of the Notes then outstanding, at any time and from time to time at 100% of the principal amount prepaid,
plus accrued and unpaid interest to the prepayment date, plus a &#147;make-whole&#148; premium as specified in the note purchase agreement. The Company must offer to prepay the Notes upon the occurrence of any change of control. In addition, the
Company must offer to prepay the Notes upon the occurrence of certain asset dispositions if the proceeds therefrom are not timely reinvested in productive assets. If any offer to prepay is accepted, the purchase price of each prepaid Note is 100% of
the principal amount thereof, plus accrued and unpaid interest thereon to the prepayment date. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The note purchase agreement
requires compliance with two financial covenants. The Company must not permit its debt to capitalization ratio to exceed 50% at any time. The note purchase agreement generally defines the debt to capitalization ratio as the ratio of (a)&nbsp;total
borrowed money indebtedness to (b)&nbsp;the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit the interest
coverage ratio as of the last day of a fiscal quarter to be less than 2.50 to 1.00. The note purchase agreement generally defines the interest coverage ratio as the ratio for the four prior quarters of EBITDA to interest charges for that same
period. The Company was in compliance with these covenants at March 31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Events of default under the note purchase
agreement and the Credit Agreement include failure to pay principal or interest when due, failure to comply with the financial and operational covenants, a cross default event, a judgment in excess of a threshold event, the guaranty agreement
ceasing to be enforceable, the occurrence of certain ERISA events, a change of control event and bankruptcy and other insolvency events. If an event of default under the note purchase agreement occurs and is continuing, then holders of a
</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">14 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
majority in principal amount of the Notes have the right to declare all the Notes then-outstanding to be immediately due and payable. In addition, if the Company defaults in payments on any Note,
then until such defaults are cured, the holder thereof may declare all the Notes held by it to be immediately due and payable. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company incurred approximately $10.8 million in debt issuance costs during 2010 in connection with the Credit Agreement and the
Senior Notes discussed above. These costs were deferred and will be recognized as interest expense over the term of the underlying debt. Interest expense related to the amortization of debt issuance costs for the Credit Agreement and the Senior
Notes was approximately $604,000 for the three months ended March&nbsp;31, 2012 and 2011. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Presented below is a schedule of
the principal repayment requirements of long-term debt by fiscal year as of March&nbsp;31, 2012 (in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="68%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="87%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Year ending December&nbsp;31,</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2013</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">121,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2014</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">70,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2015</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">2016</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Thereafter</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">300,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">498,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>10.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Commitments, Contingencies and Other Matters </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, the Company maintained letters of credit in the aggregate amount of $40.6 million for the
benefit of various insurance companies as collateral for retrospective premiums and retained losses which could become payable under the terms of the underlying insurance contracts. These letters of credit expire annually at various times during the
year and are typically renewed. As of March&nbsp;31, 2012, no amounts had been drawn under the letters of credit. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of
March&nbsp;31, 2012, the Company had commitments to purchase approximately $338 million of major equipment for its drilling and pressure pumping businesses. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The Company&#146;s pressure pumping business has entered into agreements to purchase minimum quantities of proppants from certain vendors. These agreements expire in 2013 and 2016. As of March&nbsp;31,
2012, the remaining obligation under these agreements is approximately $37.4 million, of which materials with a total purchase price of approximately $8.4 million are expected to be delivered during the last three quarters of 2012. In the event that
the required minimum quantities are not purchased during any contract year, the Company would be required to make a liquidated damages payment to the respective vendor for any shortfall. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In November of 2011, the Company&#146;s pressure pumping business entered into an agreement with a proppant vendor to advance up to $12.0
million to such vendor to finance the construction of certain processing facilities. This advance is secured by the underlying processing facilities and bears interest at an annual rate of 5.0%. Repayment of the advance is to be made through
discounts applied to purchases from the vendor and repayment of all amounts advanced must be made no later than October&nbsp;1, 2017. As of March&nbsp;31, 2012, advances of approximately $5.1 million had been made under this agreement and repayments
of approximately $145,000 had been received resulting in a balance outstanding of approximately $4.9 million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company is
party to various legal proceedings arising in the normal course of its business. The Company does not believe that the outcome of these proceedings, either individually or in the aggregate, will have a material adverse effect on its financial
condition, results of operations or cash flows. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">15 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>



<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>11.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Stockholders&#146; Equity </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Cash Dividends &#151;</I> The Company paid cash dividends during the three months ended March&nbsp;31, 2011 and 2012
as follows: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Per&nbsp;Share</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1">(in&nbsp;thousands)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2011:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Paid on March&nbsp;30, 2011</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.05</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,708</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Per&nbsp;Share</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1">(in&nbsp;thousands)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>2012:</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Paid on March&nbsp;30, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.05</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April&nbsp;25, 2012, the Company&#146;s Board of Directors approved a cash dividend on its common
stock in the amount of $0.05 per share to be paid on June&nbsp;29, 2012 to holders of record as of June&nbsp;15, 2012. The amount and timing of all future dividend payments, if any, is subject to the discretion of the Board of Directors and will
depend upon business conditions, results of operations, financial condition, terms of the Company&#146;s credit facilities and other factors. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On August&nbsp;1, 2007, the Company&#146;s Board of Directors approved a stock buyback program authorizing purchases of up to $250 million of the Company&#146;s common stock in open market or privately
negotiated transactions. No shares were purchased during the three months ended March&nbsp;31, 2012 under the program. As of March&nbsp;31, 2012, the Company is authorized to purchase approximately $113 million of the Company&#146;s outstanding
common stock under the program. Shares purchased under the program are accounted for as treasury stock. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company purchased
683 shares of treasury stock from employees during the three months ended March&nbsp;31, 2012. These shares were purchased at fair market value upon the vesting of restricted stock to provide the employees with the funds necessary to satisfy payroll
tax withholding obligations. The total purchase price for these shares was approximately $15,000. These purchases were made pursuant to the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan and not pursuant to the stock buyback
program. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>12.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Income Taxes </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On January&nbsp;1, 2010, the Company converted its Canadian operations from a Canadian branch to a controlled foreign
corporation for Federal income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in the Company&#146;s deferred tax liabilities, which is being
amortized as a reduction to deferred income tax expense over the weighted average remaining useful life of the Canadian assets. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As a result of the above conversion, the Company&#146;s Canadian assets are no longer subject to United States taxation, provided that
the related unremitted earnings are permanently reinvested in Canada. Effective January&nbsp;1, 2010, the Company has elected to permanently reinvest these unremitted earnings in Canada, and intends to do so for the foreseeable future. As a result,
no deferred United States federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $27.0 million as of March&nbsp;31, 2012. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">16 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>



<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>13.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Fair Values of Financial Instruments </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The carrying values of cash and cash equivalents, trade receivables and accounts payable approximate fair value due to
the short-term maturity of these items. These fair value estimates are considered Level 1 fair value estimates in the fair value hierarchy of fair value accounting. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">The estimated fair value of the Company&#146;s outstanding debt balances (including current portion) as of March&nbsp;31, 2012 and December&nbsp;31, 2011 is set forth below (in thousands): </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="64%"></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="3%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>March&nbsp;31, 2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>December&nbsp;31, 2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Carrying</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fair</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Carrying</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Fair</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Value</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Borrowings under Credit Agreement:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revolving credit facility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">108,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">108,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">110,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">110,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:3.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Term loan facility</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">90,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">90,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">92,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">92,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Senior Notes</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">300,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">322,849</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">300,000</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">315,942</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total debt</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">498,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">521,349</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">502,500</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">518,442</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The carrying value of the balance outstanding under the term loan facility and revolving credit facility
approximates fair value as both facilities have a floating interest rate. The fair value of the 4.97% Series A Senior Notes at March&nbsp;31, 2012 and December&nbsp;31, 2011 was measured based on discounted cash flows associated with the Senior
Notes using current market rates of interest at those respective dates. The current market rates used in measuring this fair value were 3.91% at March 31, 2012 and 4.07% at December 31, 2011. These fair value estimates are based on observable market
inputs and are considered Level 2 fair value estimates in the fair value hierarchy of fair value accounting. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>14.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Recently Issued Accounting Standards </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In September 2011, the Financial Accounting Standards Board (&#147;FASB&#148;) issued an accounting standard update
that simplifies how entities test goodwill for impairment. This update permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as
a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Previous guidance required an entity to test goodwill for impairment, on at least an annual basis, by comparing the fair value of a reporting unit with
its carrying amount. If the fair value of a reporting unit is less than its carrying amount, then the second step of the test must be performed to measure the amount of the impairment loss, if any. Under the amendments in this update, an entity is
not required to calculate the fair value of a reporting unit unless the entity determines that it is more likely than not that its fair value is less than its carrying amount. This update is effective for annual and interim goodwill impairment tests
performed for fiscal years beginning after December&nbsp;15, 2011. Early adoption is permitted if an entity&#146;s financial statements for the most recent annual or interim period have not yet been issued. The Company elected to early adopt this
accounting standard update as of December&nbsp;31, 2011 and such early adoption did not have a material impact to the Company. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In June 2011, the FASB issued an accounting standard update that requires that all non-owner changes in stockholders&#146; equity be
presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In the two-statement approach, the first statement should present total net income and its components followed consecutively by
a second statement that should present total other comprehensive income, the components of other comprehensive income, and the total of comprehensive income. Historically, these components of other comprehensive income and total comprehensive income
have been presented in the statement of changes in stockholders&#146; equity by many companies, including the Company. This requirement is effective for fiscal years, and interim periods within those years, beginning after December&nbsp;15, 2011,
and will be effective for the Company in the quarter ending March&nbsp;31, 2012. The adoption of this update has resulted in the addition of a new consolidated statement of comprehensive income being added to the Company&#146;s consolidated
financial statements beginning with the quarter ended March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In May 2011, the FASB issued an accounting
standard update to improve the comparability of fair value measurements presented and disclosed in financial statements prepared in accordance with United States GAAP and International Financial Reporting Standards. The amendments in this update do
not require additional fair value measurements, but provide additional guidance as to measuring fair value as well as certain additional disclosure requirements. The requirements in this update are effective during interim and annual periods
beginning after December&nbsp;15, 2011 and became effective for the Company in the quarter ending March&nbsp;31, 2012. The adoption of this update did not have a material impact on the Company&#146;s disclosures included in its consolidated
financial statements. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>

<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>15.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Subsequent Event </B></FONT></TD></TR></TABLE>
 <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April 23, 2012, the Company sold its flowback operations to a subsidiary of TETRA Technologies, Inc. in a cash
transaction. The sale price was $42.5 million and a subsidiary of the Company retained the associated financial working capital of approximately $5 million. The Company expects to report a pretax gain of approximately $20 million in the second
quarter of 2012 as a result of this transaction. </FONT></P>

 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">17 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>DISCLOSURE REGARDING FORWARD LOOKING STATEMENTS </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">This Quarterly Report on Form 10-Q (this &#147;Report&#148;) and other public filings and press releases by us contain
&#147;forward-looking statements&#148; within the meaning of the Securities Act of 1933, as amended (the &#147;Securities Act&#148;), and the Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), and the Private Securities
Litigation Reform Act of 1995, as amended. These &#147;forward-looking statements&#148; involve risk and uncertainty. These forward-looking statements include, without limitation, statements relating to: liquidity; revenue expectations and backlog;
financing of operations; continued volatility of oil and natural gas prices; source and sufficiency of funds required for building new equipment and additional acquisitions (if further opportunities arise); impact of inflation; demand for our
services; and other matters. Our forward-looking statements can be identified by the fact that they do not relate strictly to historic or current facts and often use words such as &#147;believes,&#148; &#147;budgeted,&#148; &#147;continue,&#148;
&#147;expects,&#148; &#147;estimates,&#148; &#147;project,&#148; &#147;will,&#148; &#147;could,&#148; &#147;may,&#148; &#147;plans,&#148; &#147;intends,&#148; &#147;strategy,&#148; or &#147;anticipates,&#148; or the negative thereof and other words
and expressions of similar meaning. The forward-looking statements are based on certain assumptions and analyses we make in light of our experience and our perception of historical trends, current conditions, expected future developments and other
factors we believe are appropriate in the circumstances. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to have been correct.
Forward-looking statements may be made orally or in writing, including, but not limited to, Management&#146;s Discussion and Analysis of Financial Condition and Results of Operations included in this Report and other sections of our filings with the
United States Securities and Exchange Commission (the &#147;SEC&#148;) under the Exchange Act and the Securities Act. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Forward-looking statements are not guarantees of future performance and a variety of factors could cause actual results to differ
materially from the anticipated or expected results expressed in or suggested by these forward-looking statements. Factors that might cause or contribute to such differences include, but are not limited to, global economic conditions, volatility in
customer spending and in oil and natural gas prices that could adversely affect demand for our services and their associated effect on day rates, utilization, margins and planned capital expenditures, excess availability of land drilling rigs and
pressure pumping equipment, including as a result of reactivation or construction, adverse industry conditions, adverse credit and equity market conditions, difficulty in integrating acquisitions, shortages of labor, equipment, supplies and
materials, weather, loss of key customers, liabilities from operations for which we do not have and receive full indemnification or insurance, governmental regulation and ability to retain management and field personnel. Refer to &#147;Risk
Factors&#148; contained in Part 1 of our Annual Report on Form 10-K for the year ended December&nbsp;31, 2011 for a more complete discussion of these and other factors that might affect our performance and financial results. You are cautioned not to
place undue reliance on any of our forward-looking statements. These forward-looking statements are intended to relay our expectations about the future, and speak only as of the date they are made. We undertake no obligation to publicly update or
revise any forward-looking statement, whether as a result of new information, changes in internal estimates or otherwise, except as required by law. </FONT></P>
 <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_8"></A>ITEM&nbsp;2.</B><B><I>&nbsp;Management&#146;s Discussion and Analysis of Financial Condition and Results of
Operations</I></B><B> </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Management Overview</I>&nbsp;&#151; We are a leading provider of services to the North American
oil and natural gas industry. Our services primarily involve the drilling, on a contract basis, of land-based oil and natural gas wells and pressure pumping services. In addition to the aforementioned services, we also invest, on a non-operating
working interest basis, in oil and natural gas properties. We acquired an electric wireline business on October&nbsp;1, 2010 and sold the business on January&nbsp;27, 2011. Due to our exit from the electric wireline business, we have presented the
results of that business as discontinued operations in this Report. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, we had a drilling fleet that
consisted of approximately 330 marketable land-based drilling rigs. Although there continued to be uncertainty with respect to the global economic environment and a decrease in natural gas prices, activity in our drilling business continued to
increase during the first quarter of 2012. In the first quarter of 2012, our average number of rigs operating increased to 237, including 224 in the United States and 13 in Canada, as compared to an average of 207 drilling rigs operating, including
192 rigs in the United States and 15 rigs in Canada during the same period in 2011. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">While conventional wells remain an
important source of natural gas and oil, this increased activity results, in part, from our addressing our customers&#146; needs for drilling wells in the newer horizontal shale and other unconventional resource plays by expanding our areas of
operation and improving the capabilities of our drilling fleet during the last several years. As of March&nbsp;31, 2012, we have completed 96 new APEX&#153; rigs and made performance and safety improvements to existing high capacity rigs. We expect
to complete 24 new APEX&#153; rigs in 2012. In connection with the newer horizontal shale and other unconventional resource plays, we have added equipment to perform service intensive fracturing jobs. As of March&nbsp;31, 2012, we have added
approximately 500,000 hydraulic horsepower to our pressure pumping fleet since the end of 2009, and we had a total of approximately 660,000 hydraulic horsepower in our pressure pumping fleet at March&nbsp;31, 2012. High oil prices are expected to
result in increased drilling and pressure pumping activity in the oil and liquids rich areas, although unusually low natural gas prices and the addition of new pressure pumping equipment to the marketplace could lead to an excess supply of pressure
pumping equipment in the oil and liquids rich areas. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">18 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We maintain a backlog of commitments for contract drilling revenues under term contracts,
which we define as contracts with a fixed term of one year or more. Our backlog as of March&nbsp;31, 2012 was approximately $1.7 billion. We expect approximately $753 million of our backlog to be realized in the remainder of 2012. We calculate our
backlog by multiplying the day rate under our term drilling contracts by the number of days remaining under the contract. The calculation does not include any revenues related to other fees such as for mobilization, demobilization and customer
reimbursables, nor does it include potential reductions in rates during periods in which the rig is moving, on standby or incurring maintenance and repair time in excess of what is permitted under the drilling contract. In addition, generally our
long-term drilling contracts are subject to termination by the customer on short notice and provide for the payment of an early termination payment to us in the event that the contract is terminated by the customer. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">For the three months ended March&nbsp;31, 2012 and 2011, our operating revenues from continuing operations consisted of the following
(dollars in thousands): </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="64%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="14" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Three Months Ended March&nbsp;31,</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Contract drilling</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">489,482</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">66</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">377,358</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">66</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pressure pumping</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">241,722</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">32</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">179,659</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">32</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Oil and natural gas</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,717</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,387</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">745,921</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">100</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">567,404</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">100</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Generally, the profitability of our business is impacted most by two primary factors in our contract
drilling segment: our average number of rigs operating and our average revenue per operating day. During the first quarter of 2012, our average number of rigs operating was 237 compared to 207 in the first quarter of 2011. Our average revenue per
operating day was $22,650 in the first quarter of 2012 compared to $20,240 in the first quarter of 2011. Additionally, our pressure pumping segment experienced an increase in large multi-stage fracturing jobs in the first quarter of 2012 compared to
the first quarter of 2011. We had consolidated net income of $97.3 million for the first quarter of 2012 compared to consolidated net income of $71.3 million for the first quarter of 2011. The increase in consolidated net income was primarily due to
our contract drilling segment experiencing an increase in the average number of rigs operating and an increase in the average revenue per operating day as well as greater activity, pricing and size of our pressure pumping business. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Our revenues, profitability and cash flows are highly dependent upon prevailing prices for oil and natural gas. During periods of
improved commodity prices, the capital spending budgets of oil and natural gas operators tend to expand, which generally results in increased demand for our services. Conversely, in periods when these commodity prices deteriorate, the demand for our
services generally weakens and we experience downward pressure on pricing for our services. After reaching a peak in June 2008, there was a significant extended decline in oil and natural gas prices and a substantial deterioration in the global
economic environment. As part of this deterioration, there was substantial uncertainty in the capital markets and access to financing was reduced. Due to these conditions, our customers reduced or curtailed their drilling programs, which resulted in
a decrease in demand for our services, as evidenced by the decline in our monthly average number of rigs operating from a high of 283 in October 2008 to a low of 60 in June 2009. Our monthly average number of rigs operating has subsequently
increased from the mid-year low of 60 in 2009 to 232 in March 2012 and our profitability has improved. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We are highly impacted
by competition, the availability of excess equipment, labor issues and various other factors that could materially adversely affect our business, financial condition, cash flows and results of operations. Please see &#147;Risk Factors&#148; included
in Part I of our Annual Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2011. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We believe that our
liquidity as of March&nbsp;31, 2012, which includes approximately $322 million in working capital and approximately $251 million available under our $400&nbsp;million revolving credit facility, together with cash expected to be generated from
operations, should provide us with sufficient ability to fund our current plans to build new equipment, make improvements to our existing equipment, service our debt and pay cash dividends. If we pursue opportunities for growth that require capital,
we believe we would be able to satisfy these needs through a combination of working capital, cash flows from operating activities, borrowing capacity under our revolving credit facility or additional debt or equity financing. However, there can be
no assurance that such capital will be available on reasonable terms, if at all. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Commitments and
Contingencies</I>&nbsp;&#151; As of March&nbsp;31, 2012, we maintained letters of credit in the aggregate amount of $40.6 million for the benefit of various insurance companies as collateral for retrospective premiums and retained losses which could
become payable under the terms of the underlying insurance contracts. These letters of credit expire annually at various times during the year and are typically renewed. As of March&nbsp;31, 2012, no amounts had been drawn under the letters of
credit. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">19 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, we had commitments to purchase approximately $338 million of
major equipment for our drilling and pressure pumping businesses. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Our pressure pumping business has entered into agreements
to purchase minimum quantities of proppants from certain vendors. These agreements expire in 2013 and 2016. As of March&nbsp;31, 2012, the remaining obligation under these agreements is approximately $37.4 million, of which materials with a total
purchase price of approximately $8.4 million are expected to be delivered during 2012. In the event that the required minimum quantities are not purchased during any contract year, we could be required to make a liquidated damages payment to the
respective vendor for any shortfall. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In November 2011, our pressure pumping business entered into an agreement with a
proppant vendor to advance up to $12.0 million to such vendor to finance its construction of certain processing facilities. This advance is secured by the underlying processing facilities and other assets and bears interest at an annual rate of
5.0%. Repayment of the advance is to be made through discounts applied to purchases from the vendor and repayment of all amounts advanced must be made no later than October&nbsp;1, 2017. As of March&nbsp;31, 2012, advances of approximately $5.1
million had been made under this agreement and repayments of approximately $145,000 had been received resulting in a balance outstanding of approximately $4.9 million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>Trading and Investing</I>&nbsp;&#151; We have not engaged in trading activities that include high-risk securities, such as derivatives and non-exchange traded contracts. We invest cash primarily in
highly liquid, short-term investments such as overnight deposits and money market accounts. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Description of
Business</I>&nbsp;&#151; We conduct our contract drilling operations primarily in Texas, New Mexico, Oklahoma, Kansas, Arkansas, Louisiana, Mississippi, Colorado, Utah, Wyoming, Montana, North Dakota, Pennsylvania, West Virginia, Ohio and western
Canada. As of March&nbsp;31, 2012, we had approximately 330 marketable land-based drilling rigs. We provide pressure pumping services to oil and natural gas operators primarily in Texas and the Appalachian Basin. Pressure pumping services are
primarily well stimulation and cementing for completion of new wells and remedial work on existing wells. We also own and invest in oil and natural gas assets as a non-operating working interest owner. Our oil and natural gas working interests are
located primarily in Texas and New Mexico. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The North American oil and natural gas services industry has experienced downturns
in demand during the last decade. During these periods, there have been substantially more drilling rigs and pressure pumping equipment available than necessary to meet demand. As a result, drilling and pressure pumping contractors have had
difficulty sustaining profit margins and, at times, have incurred losses during the downturn periods. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In addition,
unconventional resource plays have substantially increased and some drilling rigs are not capable of drilling these wells efficiently. Accordingly, the utilization of some older technology drilling rigs may be hampered by their lack of capability to
successfully compete for this work. Other ongoing factors which could continue to adversely affect utilization rates and pricing, even in an environment of high oil and natural gas prices and increased drilling activity, include: </FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">movement of drilling rigs from region to region, </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">reactivation of land-based drilling rigs,&nbsp;or </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">construction of new technology drilling rigs. </FONT></P></TD></TR></TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Construction of new technology drilling rigs increased in recent years. The addition of new technology drilling rigs to the market, combined with a reduction in the drilling of vertical wells, has
resulted in excess capacity of conventional drilling rigs. Similarly, the substantial recent increase in unconventional resource plays has led to higher demand for pressure pumping services and there has been a significant increase in the
construction of new pressure pumping equipment. The addition of new pressure pumping equipment, any general decline in demand for pressure pumping services and the movement of pressure pumping equipment from one region to another, including as a
result of low oil or natural gas prices, could result in there being substantially more pressure pumping equipment available than necessary to meet demand. As a result of low natural gas prices and the construction of new equipment, there is
currently an excess of pressure pumping equipment available. In circumstances of excess capacity, providers of pressure pumping services will have difficulty sustaining profit margins and may sustain losses during downturn periods. We cannot predict
either the future level of demand for our contract drilling or pressure pumping services or future conditions in the oil and natural gas contract drilling or pressure pumping businesses. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">20 </FONT></P>



<p Style='page-break-before:always'>
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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Critical Accounting Policies </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">In addition to established accounting policies, our consolidated financial statements are impacted by certain estimates and assumptions made by management. No changes in our critical accounting policies
have occurred since the filing of our Annual Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2011. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Liquidity and
Capital Resources </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, we had working capital of $322 million, including cash and cash equivalents
of $17.8 million compared to working capital of $346 million and cash and cash equivalents of $23.9 million at December&nbsp;31, 2011. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">During the three months ended March&nbsp;31, 2012, our sources of cash flow included: </FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">$264 million from operating activities, </FONT></P></TD></TR></TABLE> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">$4.7 million in proceeds from the disposal of property and equipment, and </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">$361,000 from the exercise of stock options and related tax benefits associated with stock-based compensation. </FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">During the three months ended March&nbsp;31, 2012, we used $7.8 million to pay dividends on our common stock, $4.0 million to repay
long-term debt (including a net repayment of our revolving credit facility of $1.5 million) and $263 million: </FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">to build new drilling rigs and pressure pumping equipment, </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">to make capital expenditures for the betterment and refurbishment of our drilling rigs and pressure pumping equipment, </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">to acquire and procure equipment and facilities to support our drilling and pressure pumping operations, and </FONT></P></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#149;</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">to fund investments in oil and natural gas properties on a working interest basis. </FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We paid cash dividends during the three months ended March&nbsp;31, 2012 as follows: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="76%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="76%"></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="8%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Per&nbsp;Share</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1">(in&nbsp;thousands)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Paid on March&nbsp;30, 2012</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">0.05</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,788</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April&nbsp;25, 2012, our Board of Directors approved a cash dividend on our common stock in the amount
of $0.05 per share to be paid on June&nbsp;29, 2012 to holders of record as of June&nbsp;15, 2012. The amount and timing of all future dividend payments, if any, is subject to the discretion of the Board of Directors and will depend upon business
conditions, results of operations, financial condition, terms of our credit facilities and other factors. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On August&nbsp;1,
2007, our Board of Directors approved a stock buyback program, authorizing purchases of up to $250 million of our common stock in open market or privately negotiated transactions. During the three months ended March&nbsp;31, 2012, we did not
purchase any shares of our common stock under the program. As of March&nbsp;31, 2012, we are authorized to purchase approximately $113 million of our outstanding common stock under the program. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On August&nbsp;19, 2010, we entered into a Credit Agreement (the &#147;Credit Agreement&#148;). The Credit Agreement is a committed
senior unsecured credit facility that includes a revolving credit facility and a term loan facility. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The revolving credit
facility permits aggregate borrowings of up to $400 million and contains a letter of credit facility that is limited to $150 million and a swing line facility that is limited to $40 million. Subject to customary conditions, we may request that the
lenders&#146; aggregate commitments with respect to the revolving credit facility be increased by up to $100 million, not to exceed total commitments of $500 million. The maturity date for the revolving facility is August&nbsp;19, 2013. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The term loan facility provided for a loan of $100 million which was funded on August&nbsp;19, 2010. The term loan facility is payable in
quarterly principal installments commencing November&nbsp;19, 2010. The installment amounts vary from 1.25% of the original principal amount for each of the first four quarterly installments, 2.50% of the original principal amount for each of the
subsequent eight quarterly installments, 5.00% of the original principal amount for the next subsequent three quarterly installments, with the remainder becoming due at maturity. The maturity date for the term loan facility is August&nbsp;19, 2014.
</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">21 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Loans under the Credit Agreement bear interest by reference, at our election, to the LIBOR
rate or base rate. The applicable margin on LIBOR rate loans varies from 2.75% to 3.75% and the applicable margin on base rate loans varies from 1.75% to 2.75%, in each case determined based upon our debt to capitalization ratio. As of
March&nbsp;31, 2012, the applicable margin on LIBOR rate loans was 2.75% and the applicable margin on base rate loans was 1.75%. A letter of credit fee is payable by us equal to the applicable margin for LIBOR rate loans times the daily amount
available to be drawn under outstanding letters of credit. The commitment fee payable to the lenders for the unused portion of the revolving credit facility varies from 0.50% to 0.75% based upon our debt to capitalization ratio and was 0.50% as of
March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Credit Agreement contains customary representations, warranties, indemnities and affirmative and
negative covenants. The Credit Agreement also requires compliance with two financial covenants. We must not permit our debt to capitalization ratio to exceed 45% at any time. The Credit Agreement generally defines the debt to capitalization ratio as
the ratio of (a)&nbsp;total borrowed money indebtedness to (b)&nbsp;the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. We also must not
permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 3.00 to 1.00. The Credit Agreement generally defines the interest coverage ratio as the ratio of EBITDA of the four prior fiscal quarters to interest charges
for the same period. We were in compliance with these financial covenants as of March&nbsp;31, 2012. We do not expect that the restrictions and covenants will impair, in any material respect, our ability to operate or react to opportunities that
might arise. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As of March&nbsp;31, 2012, we had $90.0 million principal amount outstanding under the term loan facility at an
interest rate of 3.00% and had approximately $109 million principal amount outstanding under the revolving credit facility at a weighted-average interest rate of 3.28%. We had $40.6 million in letters of credit outstanding at March&nbsp;31, 2012
and, as a result, we had available borrowing capacity under the revolving credit facility of approximately $251 million at that date. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">On October&nbsp;5, 2010, we completed the issuance and sale of $300 million in aggregate principal amount of our 4.97% Series A Senior Notes due October&nbsp;5, 2020 (the &#147;Notes&#148;) in a private
placement. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Notes bear interest at a rate of 4.97%&nbsp;per annum. We pay interest on the Notes on April&nbsp;5 and
October&nbsp;5 of each year. The Notes will mature on October&nbsp;5, 2020. The Notes are prepayable at our option, in whole or in part, provided that in the case of a partial prepayment, prepayment must be in an amount not less than 5% of the
aggregate principal amount of the Notes then outstanding, at any time and from time to time at 100% of the principal amount prepaid, plus accrued and unpaid interest to the prepayment date, plus a &#147;make-whole&#148; premium as specified in the
note purchase agreement. We must offer to prepay the Notes upon the occurrence of any change of control. In addition, we must offer to prepay the Notes upon the occurrence of certain asset dispositions if the proceeds therefrom are not timely
reinvested in productive assets. If any offer to prepay is accepted, the purchase price of each prepaid Note is 100% of the principal amount thereof, plus accrued and unpaid interest thereon to the prepayment date. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The note purchase agreement requires compliance with two financial covenants. We must not permit our debt to capitalization ratio to
exceed 50% at any time. The note purchase agreement generally defines the debt to capitalization ratio as the ratio of (a)&nbsp;total borrowed money indebtedness to (b)&nbsp;the sum of such indebtedness plus consolidated net worth, with consolidated
net worth determined as of the last day of the most recently ended fiscal quarter. We also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 2.50 to 1.00. The note purchase agreement generally defines
the interest coverage ratio as the ratio for the four prior quarters of EBITDA to interest charges for the same period. We were in compliance with these financial covenants as of March&nbsp;31, 2012. We do not expect that the restrictions and
covenants will impair, in any material respect, our ability to operate or react to opportunities that might arise. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Events of
default under the note purchase agreement and the Credit Agreement include failure to pay principal or interest when due, failure to comply with the financial and operational covenants, a cross default event, a judgment in excess of a threshold
event, the guaranty agreement ceasing to be enforceable, the occurrence of certain ERISA events, a change of control event and bankruptcy and other insolvency events. If an event of default occurs and is continuing, then holders of a majority in
principal amount of the Notes have the right to declare all the Notes then-outstanding to be immediately due and payable. In addition, if we default in payments on any Note, then until such defaults are cured, the holder thereof may declare all the
Notes held by it to be immediately due and payable. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">22 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We believe that our liquidity as of March&nbsp;31, 2012, which includes approximately $322
million in working capital and approximately $251 million available under our $400 million revolving credit facility, together with cash expected to be generated from operations, should provide us with sufficient ability to fund our current plans to
build new equipment, make improvements to our existing equipment, service our debt and pay cash dividends. If we pursue opportunities for growth that require capital, we believe we would be able to satisfy these needs through a combination of
working capital, cash flows from operating activities, borrowing capacity under our revolving credit facility or additional debt or equity financing. However, there can be no assurance that such capital will be available on reasonable terms, if at
all. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Results of Operations </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>The following tables summarize operations by business segment for the three months ended March&nbsp;31, 2012 and 2011: </I></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="71%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:59pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Contract Drilling</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Dollars in thousands)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">489,482</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">377,358</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">29.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Direct operating costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">282,649</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">218,699</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">29.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selling, general and administrative</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,336</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,285</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and impairment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">93,726</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">76,855</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">22.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">111,771</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">80,519</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">38.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating days</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">21,610</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">18,646</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average revenue per operating day</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">22.65</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.24</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average direct operating costs per operating day</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.08</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11.73</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">11.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average rigs operating</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">237</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">207</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">200,607</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">135,249</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">48.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues and direct operating costs increased in 2012 compared to 2011 as a result of an increase in the
number of operating days and increases in average revenue and direct operating costs per operating day. Average revenue per operating day increased in 2012 primarily due to increases in contractual dayrates. Average direct operating costs per
operating day increased in 2012 due primarily to higher labor and related costs. The increase in operating days was largely due to increased demand resulting from higher oil prices. Capital expenditures were incurred in 2012 and 2011 to build new
drilling rigs, to modify and upgrade our drilling rigs and to acquire additional related equipment such as top drives, drill pipe, drill collars, engines, fluid circulating systems, rig hoisting systems and safety enhancement equipment. Depreciation
expense increased as a result of capital expenditures. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="71%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:62pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Pressure Pumping</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Dollars in thousands)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">241,722</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">179,659</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">34.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Direct operating costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">166,857</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">118,575</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">40.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selling, general and administrative</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,275</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,339</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation and amortization</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23,803</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">15,367</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">46,787</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41,378</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fracturing jobs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">330</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">385</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(14.3</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other jobs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,659</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,445</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total jobs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,989</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,830</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average revenue per fracturing job</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">625.98</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">400.84</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">56.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average revenue per other job</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">21.19</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.53</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.9</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average revenue per total job</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">121.53</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">98.17</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">23.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Average direct operating costs per total job</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">83.89</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">64.80</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">29.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54,574</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41,181</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">32.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Our customers have increased their activities in the development of unconventional reservoirs resulting
in an increase in larger multi-stage fracturing jobs associated therewith. We have added additional equipment through construction and acquisition to meet this demand and expand our area of operations. As a result, we have experienced an increase in
the number of these larger multi-stage fracturing jobs as a proportion of the total fracturing jobs we performed. Average revenue per fracturing job increased as a result of this increase in the number of larger multi-stage fracturing jobs in 2012
as compared to 2011, as well as increased pricing. Average revenue per other job increased as a result of increased pricing for the services provided and a change in job mix. Average direct operating costs per total job increased primarily as a
result of the increase in the number of larger multi-stage fracturing jobs. Significant capital expenditures have been incurred in recent years to add capacity in our pressure pumping segment. The increase in depreciation and amortization expense in
2012 was a result of our recent capital expenditures. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">23 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="73%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:167pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Oil and Natural Gas Production and Exploration</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Dollars in thousands)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues &#151; Oil</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">13,813</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">9,087</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">52.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues &#151; Natural gas and liquids</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">904</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,300</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(30.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Revenues &#151; Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">14,717</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,387</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">41.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Direct operating costs</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,730</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,997</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">36.7</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depletion and impairment</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,469</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,572</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Operating income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,518</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,818</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">56.0</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">7,429</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,668</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">59.1</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total revenues increased as a result of increased production and higher prices for oil. Oil production
increased primarily due to the addition of new wells. Depletion and impairment expense in 2012 includes approximately $292,000 of oil and natural gas property impairments compared to approximately $667,000 of oil and natural gas property impairments
in 2011. Depletion expense increased approximately $1.3 million in 2012 compared to 2011 primarily due to increased oil production. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="84%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="74%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:72pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Corporate and Other</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2012</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>2011</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>%&nbsp;Change</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="6" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Dollars&nbsp;in&nbsp;thousands)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD COLSPAN="2" VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selling, general and administrative</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">8,257</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">10,351</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(20.2</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Depreciation</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">955</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">421</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">126.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Net gain on asset disposals</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">2,400</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,604</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">49.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Provision for bad debts</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,600</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">N/A</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">54</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">43</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">25.6</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Interest expense</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">4,582</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">3,889</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">%&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Other income</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">55</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">119</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(53.8</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Capital expenditures</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">793</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">1,454</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(45.5</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">)%&nbsp;</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Selling, general and administrative expense decreased in 2012 primarily as a result of decreased
personnel costs related to the final determination of payouts under the 2009 Performance Units upon the completion of the performance period. Gains and losses on the disposal of assets are treated as part of our corporate activities because such
transactions relate to corporate strategy decisions of our executive management group. A provision for bad debts was recognized in 2012 with respect to accounts receivable balances that are estimated to be uncollectible. Interest expense increased
in 2012 due to interest charges on borrowings under our revolving credit facility. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Income Taxes </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On January&nbsp;1, 2010, we converted our Canadian operations from a Canadian branch to a controlled foreign corporation for federal
income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in deferred tax liabilities, which is being amortized as a reduction to deferred income tax
expense over the weighted average remaining useful life of the Canadian assets. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As a result of the above conversion, our
Canadian assets are no longer directly subject to United States taxation, provided that the related unremitted earnings are permanently reinvested in Canada. Effective January&nbsp;1, 2010, we have elected to permanently reinvest these unremitted
earnings in Canada, and we intend to do so for the foreseeable future. As a result, no deferred United States federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $27.0 million as of
March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Recently Issued Accounting Standards </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">In September 2011, the Financial Accounting Standards Board (&#147;FASB&#148;) issued an accounting standard update that simplifies how entities test goodwill for impairment. This update permits an entity
to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill
impairment test. Previous guidance required an entity to test goodwill for impairment, on at least an annual basis, by comparing the fair value of a reporting unit with its carrying amount. If the fair value of a reporting unit is less than its
carrying amount, then the second step of the test must be performed to measure the amount of the impairment loss, if any. Under the amendments in this update, an entity is not required to calculate the fair value of a reporting unit unless the
entity determines that it is more likely than not that its fair value is less than its carrying amount. This update is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December&nbsp;15, 2011.
Early adoption is permitted if an entity&#146;s financial statements for the most recent annual or interim period have not yet been issued. We elected to early adopt this accounting standard update as of December&nbsp;31, 2011 and such early
adoption did not have a material impact to us. </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">24 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In June 2011, the FASB issued an accounting standard update that requires that all non-owner
changes in stockholders&#146; equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In the two-statement approach, the first statement should present total net income and
its components followed consecutively by a second statement that should present total other comprehensive income, the components of other comprehensive income, and the total of comprehensive income. Historically, these components of other
comprehensive income and total comprehensive income have been presented in the statement of changes in stockholders&#146; equity by many companies, including the Company. This requirement is effective for fiscal years, and interim periods within
those years, beginning after December&nbsp;15, 2011, and will be effective for us in the quarter ending March&nbsp;31, 2012. The adoption of this update has resulted in the addition of a new consolidated statement of comprehensive income being added
to our consolidated financial statements beginning with the quarter ended March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In May 2011, the FASB issued
an accounting standard update to improve the comparability of fair value measurements presented and disclosed in financial statements prepared in accordance with United States GAAP and International Financial Reporting Standards. The amendments in
this update do not require additional fair value measurements, but provide additional guidance as to measuring fair value as well as certain additional disclosure requirements. The requirements in this update are effective during interim and annual
periods beginning after December&nbsp;15, 2011 and became effective for us in the quarter ending March&nbsp;31, 2012. The adoption of this update did not have a material impact on the disclosures included in our consolidated financial statements.
</FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Volatility of Oil and Natural Gas Prices and its Impact on Operations and Financial Condition </B></FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Our revenue, profitability and cash flows are highly dependent upon prevailing prices for oil and natural gas and expectations about
future prices. For many years, oil and natural gas prices and markets have been extremely volatile. Prices are affected by factors such as market supply and demand, international military, political and economic conditions, the ability of OPEC to
set and maintain production and price targets, technical advances affecting energy consumption and the price and availability of alternative fuels. All of these factors are beyond our control. During the second quarter of 2008, the quarterly average
market price of natural gas (Henry Hub spot price as reported by the United States Energy Information Administration) was $11.74 per Mcf and the quarterly average market price of oil (WTI spot price as reported by the Energy Information
Administration) was $123.95 per barrel. In the last half of 2008, commodity prices rapidly declined and averaged $6.60 per Mcf for natural gas and $58.35 per barrel for oil in the fourth quarter of 2008. In 2009, the price of natural gas declined
further and averaged $4.06 per Mcf for the year. These declines in the market price of natural gas and oil resulted in our customers significantly reducing their drilling activities beginning in the fourth quarter of 2008, and drilling activities
remained low throughout 2009. Drilling activities increased in 2010 as did the prices for oil and natural gas. The increased drilling activity was largely attributed to increased development of unconventional oil and natural gas reservoirs and an
improvement in the price of oil which averaged $79.40 per barrel in 2010. Drilling for oil and liquids rich targets continued to increase in 2011 as oil averaged $94.86 per barrel for the year. Natural gas prices decreased in 2011 to an average of
$4.00 per Mcf. The 2011 decrease in natural gas prices was most significant in the fourth quarter where the average price dropped to $3.32 per Mcf and this decrease has continued into 2012 where natural gas prices fell below $3.00 per Mcf and
averaged $2.45 per Mcf for the first quarter. Natural gas prices at the end of the first quarter of 2012 were below $2.00 per Mcf and have remained below $2.00 per Mcf through April 2012. The increase in drilling activity in oil rich basins has
absorbed the decrease in demand for natural gas drilling activities in 2011 and 2012 and our total rig count has increased. Our average number of rigs operating remains well below the number of our available rigs. Construction of new land drilling
rigs in the United States during the last ten years has significantly contributed to excess capacity. As a result of decreased drilling activity and excess capacity, our average number of rigs operating has declined from historic highs. We expect
oil and natural gas prices to continue to be volatile and to affect our financial condition, operations and ability to access sources of capital. Low market prices for oil and natural gas would likely result in lower demand for our drilling rigs and
pressure pumping services and could adversely affect our operating results, financial condition and cash flows. Even during periods of high prices for oil and natural gas, companies exploring for oil and natural gas may cancel or curtail programs,
or reduce their levels of capital expenditures for exploration and production for a variety of reasons, which could reduce demand for our drilling and pressure pumping services. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_9"></A>ITEM&nbsp;3. </B><B><I>Quantitative and Qualitative Disclosures About Market Risk</I></B><B> </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">We currently have exposure to interest rate market risk associated with any borrowings that we have under our term credit facility or our revolving credit facility. Interest is paid on the outstanding
principal amount of borrowings at a floating rate based on, at our election, LIBOR or a base rate. The margin on LIBOR loans ranges from 2.75% to 3.75% and the margin on base rate loans ranges from 1.75% to 2.75%, based on our debt to capitalization
ratio. At March&nbsp;31, 2012, the margin on LIBOR loans was 2.75% and the margin on base rate loans was 1.75%. As of March&nbsp;31, 2012, we had approximately $109 million outstanding under our revolving credit facility at a weighted average
interest rate of 3.28% and $90.0 million outstanding under our term credit facility at an interest rate of 3.00%. The interest rate on the borrowings outstanding under our credit facilities is variable and adjusts at each interest
</FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">25 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
payment date based on our election of LIBOR or the base rate. A one percent increase in the interest rate on the borrowing outstanding under our revolving and term credit facilities as of
March&nbsp;31, 2012 would increase our annual cash interest expense by approximately $2.0 million. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">We conduct a portion of
our business in Canadian dollars through our Canadian land-based drilling operations. The exchange rate between Canadian dollars and U.S.&nbsp;dollars has fluctuated during the last several years. If the value of the Canadian dollar against the
U.S.&nbsp;dollar weakens, revenues and earnings of our Canadian operations will be reduced and the value of our Canadian net assets will decline when they are translated to U.S.&nbsp;dollars. This currency risk is not material to our results of
operations or financial condition. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The carrying values of cash and cash equivalents, trade receivables and accounts payable
approximate fair value due to the short-term maturity of these items. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_10"></A>ITEM&nbsp;4. </B><B><I>Controls and
Procedures</I></B><B> </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Disclosure Controls and Procedures</I>&nbsp;&#151; We maintain disclosure controls and procedures
(as such terms are defined in Rules&nbsp;13a-15(e) and 15d-15(e) promulgated under the Exchange Act), designed to ensure that the information required to be disclosed in the reports that we file with the SEC under the Exchange Act is recorded,
processed, summarized and reported within the time periods specified in the SEC&#146;s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (&#147;CEO&#148;) and Chief
Financial Officer (&#147;CFO&#148;), as appropriate, to allow timely decisions regarding required disclosure. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Under the
supervision and with the participation of our management, including our CEO and CFO, we conducted an evaluation of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on
Form&nbsp;10-Q. Based on that evaluation, our CEO and CFO concluded that our disclosure controls and procedures were effective as of March&nbsp;31, 2012. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><I>Changes in Internal Control Over Financial Reporting</I>&nbsp;&#151; There were no changes in our internal control over financial reporting during our most recently completed fiscal quarter that have
materially affected, or are reasonably likely to materially affect, our internal control over financial reporting, as defined in Rule 13a-15(f) under the Exchange Act. </FONT></P> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_11"></A>PART&nbsp;II&nbsp;
&#151; OTHER INFORMATION </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_12"></A>ITEM&nbsp;2.</B><B><I> Unregistered Sales of Equity Securities and Use of
Proceeds</I></B><B> </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The table below sets forth the information with respect to purchases of our common stock made by us
during the quarter ended March&nbsp;31, 2012. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD WIDTH="44%"></TD>
<TD VALIGN="bottom" WIDTH="10%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="10%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="10%"></TD>
<TD></TD>
<TD></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="10%"></TD>
<TD></TD>
<TD></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:53pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Period Covered</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Number&nbsp;of&nbsp;
Shares</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Purchased</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Average&nbsp;Price</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Paid
per</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Share</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Total&nbsp;Number&nbsp;of</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Shares&nbsp;
(or&nbsp;Units)</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Purchased&nbsp;as&nbsp;Part</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>of Publicly</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Announced Plans</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>or Programs</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="2" ALIGN="center" STYLE="border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Approximate&nbsp;Dollar</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Value of
Shares</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>That May Yet Be</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Purchased&nbsp;Under&nbsp;the</B></FONT><br><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Plans or</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Programs (in</B></FONT><br><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>thousands)(1)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>


<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">January&nbsp;1-31, 2012 (2)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">569</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">21.09</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">112,868</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">February&nbsp;1-29, 2012 (2)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">57</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">18.76</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">112,868</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">March&nbsp;1-31, 2012 (2)</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">57</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">17.55</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">112,868</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1px solid #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Total</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">683</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">20.70</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">$</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">112,868</FONT></TD>
<TD NOWRAP VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD VALIGN="bottom"> <P STYLE="border-top:3px double #000000">&nbsp;</P></TD>
<TD>&nbsp;</TD></TR>
</TABLE> <P STYLE="line-height:8px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000;width:10%">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">On August&nbsp;2, 2007, we announced that our Board of Directors approved a stock buyback program authorizing purchases of up to $250 million of our common stock in
open market or privately negotiated transactions. </FONT></TD></TR></TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">26 </FONT></P>



<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">
<h5 align="left"><a href="#toc">Table of Contents</a></h5>


<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">We purchased 569 shares in January, 57 shares in February and 57 shares in March from employees with respect to their tax withholding obligations with respect to the
vesting of restricted shares. The price paid was the closing price of our common stock on the last business day prior to the date the shares vested. These purchases were made pursuant to the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term
Incentive Plan and not pursuant to the stock buyback program. </FONT></TD></TR></TABLE> <P STYLE="margin-top:18px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_13"></A>ITEM&nbsp;6.</B><B><I>
Exhibits</I></B><B> </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following exhibits are filed herewith or incorporated by reference, as indicated: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">


<TR>
<TD></TD>
<TD VALIGN="bottom" WIDTH="4%"></TD>
<TD WIDTH="94%"></TD></TR>


<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;3.1</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Restated Certificate of Incorporation, as amended (filed August&nbsp;9, 2004 as Exhibit&nbsp;3.1 to the Company&#146;s Quarterly Report on Form&nbsp;10-Q for the quarterly period
ended June&nbsp;30, 2004 and incorporated herein by reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;3.2</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Amendment to Restated Certificate of Incorporation, as amended (filed August&nbsp;9, 2004 as Exhibit&nbsp;3.2 to the Company&#146;s Quarterly Report on Form&nbsp;10-Q for the
quarterly period ended June&nbsp;30, 2004 and incorporated herein by reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;&nbsp;3.3</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Second Amended and Restated Bylaws (filed August 6, 2007 as Exhibit 3.3 to the Company&#146;s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2007 and
incorporated herein by reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">10.1</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Employment Agreement, effective as of January 1, 2012, by and between Patterson-UTI Drilling Company LLC and James M. Holcomb (filed February 10, 2012 as Exhibit 10.17 to the
Company&#146;s Annual Report on Form 10-K for the year ended December 31, 2011 and incorporated herein by reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">10.2</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Term Sheet for Douglas J. Wall dated March 14, 2012 (filed March 16, 2012 as Exhibit 99.2 to the Company&#146;s Current Report on Form 8-K and incorporated herein by
reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">10.3</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Form of Offer Letter to William Andrew Hendricks, Jr. dated March 14, 2012 (filed March 16, 2012 as Exhibit 99.3 to the Company&#146;s Current Report on Form 8-K and incorporated
herein by reference).</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">31.1*</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Certification of Chief Executive Officer pursuant to Rule&nbsp;13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended.</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">31.2*</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Certification of Chief Financial Officer pursuant to Rule&nbsp;13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended.</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">32.1*</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18&nbsp;USC Section&nbsp;1350, as adopted pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of
2002.</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">101*</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">The following materials from Patterson-UTI Energy, Inc.&#146;s Quarterly Report on Form 10-Q for the quarter ended March 31, 2012, formatted in XBRL (Extensible Business Reporting
Language): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statement of Changes in Stockholders&#146; Equity, (v) the Consolidated
Statements of Cash Flows, and (vi) Notes to Consolidated Financial Statements.</FONT></TD></TR>
</TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">*</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">filed herewith </FONT></TD></TR></TABLE>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">27 </FONT></P>



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<h5 align="left"><a href="#toc">Table of Contents</a></h5>

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B><A NAME="tx314216_14"></A>SIGNATURE </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
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<TD WIDTH="94%"></TD></TR>


<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2">PATTERSON-UTI ENERGY, INC.</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;G<SMALL>REGORY</SMALL> W.
P<SMALL>IPKIN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SMALL></FONT></P></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Gregory W. Pipkin</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Accounting Officer and Assistant Secretary</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(Principal&nbsp;Accounting&nbsp;Officer and Duly&nbsp;Authorized&nbsp;Officer)</I></FONT></TD></TR>
</TABLE></DIV> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">DATE: April 30, 2012 </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">28 </FONT></P>


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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>d314216dex311.htm
<DESCRIPTION>CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO RULE 13A-14(A)/15D-14(A)
<TEXT>
<HTML><HEAD>
<TITLE>Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a)</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>EXHIBIT&nbsp;31.1 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CERTIFICATIONS </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">I,
Douglas J. Wall, certify that: </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1) I have reviewed this quarterly report on Form&nbsp;10-Q of Patterson-UTI Energy, Inc;
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(4) The registrant&#146;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules&nbsp;13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules&nbsp;13a-15(f) and 15d-15(f)) for the registrant and have: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(a)&nbsp;designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)&nbsp;designed such internal control over financial reporting, or caused such internal control over financial reporting
to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
</FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c)&nbsp;evaluated the effectiveness of the registrant&#146;s disclosure controls and procedures and presented
in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;&nbsp;and </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(d)&nbsp;disclosed in this report any change in the registrant&#146;s internal control over financial reporting that
occurred during the registrant&#146;s most recent fiscal quarter (the registrant&#146;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#146;s internal
control over financial reporting;&nbsp;and </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5) The registrant&#146;s other certifying officer(s) and I have disclosed, based
on our most recent evaluation of internal control over financial reporting, to the registrant&#146;s auditors and the audit committee of the registrant&#146;s board of directors (or persons performing the equivalent functions): </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)&nbsp;all significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant&#146;s ability to record, process, summarize and report financial information;&nbsp;and </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)&nbsp;any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant&#146;s internal control over financial reporting. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
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<TR>
<TD WIDTH="100%"></TD></TR>


<TR>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;D<SMALL>OUGLAS</SMALL> J.
W<SMALL>ALL&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SMALL></FONT></P></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Douglas J. Wall</FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>President and Chief Executive Officer</I></FONT></TD></TR>
</TABLE></DIV> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Date: April 30, 2012 </FONT></P>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>d314216dex312.htm
<DESCRIPTION>CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO RULE 13A-14(A)/15D-14(A)
<TEXT>
<HTML><HEAD>
<TITLE>Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a)</TITLE>
</HEAD>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>EXHIBIT&nbsp;31.2 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CERTIFICATIONS </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">I, John
E. Vollmer&nbsp;III, certify that: </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1)&nbsp;I have reviewed this quarterly report on Form&nbsp;10-Q of Patterson-UTI Energy,
Inc; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2)&nbsp;Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3)&nbsp;Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(4)&nbsp;The registrant&#146;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules&nbsp;13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules&nbsp;13a-15(f) and 15d-15(f)) for the registrant and have: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(a)&nbsp;designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)&nbsp;designed such internal control over financial reporting, or caused such internal control over financial reporting
to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
</FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c)&nbsp;evaluated the effectiveness of the registrant&#146;s disclosure controls and procedures and presented
in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;&nbsp;and </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(d)&nbsp;disclosed in this report any change in the registrant&#146;s internal control over financial reporting that
occurred during the registrant&#146;s most recent fiscal quarter (the registrant&#146;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#146;s internal
control over financial reporting;&nbsp;and </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(5)&nbsp;The registrant&#146;s other certifying officer(s) and I have disclosed,
based on our most recent evaluation of internal control over financial reporting, to the registrant&#146;s auditors and the audit committee of the registrant&#146;s board of directors (or persons performing the equivalent functions): </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)&nbsp;all significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant&#146;s ability to record, process, summarize and report financial information;&nbsp;and </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)&nbsp;any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant&#146;s internal control over financial reporting. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
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<TR>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;J<SMALL>OHN</SMALL> E.
V<SMALL>OLLMER</SMALL>&nbsp;III&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></P></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">John E. Vollmer&nbsp;III</FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Senior Vice President&nbsp;&#151; Corporate</I></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Development, Chief Financial Officer</I></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>and Treasurer</I></FONT></P></TD></TR>
</TABLE></DIV> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Date: April 30, 2012 </FONT></P>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>d314216dex321.htm
<DESCRIPTION>CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
<TEXT>
<HTML><HEAD>
<TITLE>Certification of Chief Executive Officer and Chief Financial Officer</TITLE>
</HEAD>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>EXHIBIT&nbsp;32.1 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CERTIFICATION PURSUANT TO </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>18&nbsp;U.S.C. SECTION&nbsp;1350, </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>AS ADOPTED PURSUANT TO </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>SECTION&nbsp;906 OF THE SARBANES-OXLEY ACT OF 2002 </B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>NOT FILED PURSUANT TO THE SECURITIES EXCHANGE ACT OF 1934 </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">In connection
with the quarterly report of Patterson-UTI Energy, Inc. (the &#147;Company&#148;) on Form&nbsp;10-Q for the period ending March&nbsp;31, 2012, as filed with the Securities and Exchange Commission on the date hereof (the &#147;Report&#148;), Douglas
J. Wall, Chief Executive Officer, and John E. Vollmer&nbsp;III, Chief Financial Officer, of the Company, each certify, pursuant to 18&nbsp;U.S.C. Section&nbsp;1350, as adopted pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of 2002, that, to
his knowledge: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1)&nbsp;The Report fully complies with the requirements of section&nbsp;13(a) or 15(d) of the
Securities Exchange Act of 1934;&nbsp;and </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(2)&nbsp;The information contained in the Report fairly presents, in
all material respects, the financial condition and results of operations of the Company. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">A signed original of this written
statement required by Section&nbsp;906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission upon request. The foregoing is being furnished solely pursuant to said
Section&nbsp;906 and Rule 13a-14(b) promulgated under the Securities Exchange Act of 1934, as amended, and is not being filed as part of the Report or as a separate disclosure document. </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="100%"></TD></TR>


<TR>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;D<SMALL>OUGLAS</SMALL> J.
W<SMALL>ALL</SMALL></FONT></P></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Douglas J. Wall</FONT></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Executive Officer</FONT></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">April 30, 2012</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;J<SMALL>OHN</SMALL> E.
V<SMALL>OLLMER</SMALL>&nbsp;III</FONT></P></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">John E. Vollmer&nbsp;III</FONT></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Financial Officer</FONT></TD></TR>
<TR>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">April 30, 2012</FONT></TD></TR>
</TABLE>
</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.INS
<SEQUENCE>5
<FILENAME>pten-20120331.xml
<DESCRIPTION>XBRL INSTANCE DOCUMENT
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII" standalone="yes" ?>
<!-- EDGAR Online I-Metrix Xcelerate Instance Document, based on XBRL 2.1  http://www.edgar-online.com/ -->
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<!-- Round: ea7289ed-51c8-420a-a455-d12c6bb9bce5 -->
<!-- Creation date: 2012-04-30T04:03:24Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
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  <us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_1F009D48-BF6F-4C2B-903B-1BD551AB1182_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following
table presents information necessary to calculate income from
continuing operations per share, loss from discontinued operations
per share and net income per share for the three months ended
March&amp;#xA0;31, 2012 and 2011 as well as potentially dilutive
securities excluded from the weighted average number of diluted
common shares outstanding, as their inclusion would have been
anti-dilutive (in thousands, except per share amounts):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"&gt;
&lt;tr&gt;
&lt;td width="84%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;BASIC
EPS:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;97,274&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,619&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjust for income
attributed to holders of non-vested restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(742&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations, net&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(367&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjust for loss attributed
to holders of non-vested restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(364&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,625&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic income from
continuing operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic loss from
discontinued operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic net income per common
share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;DILUTED
EPS:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Add incremental earnings
related to potential common shares&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjusted income from
continuing operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,625&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Add dilutive effect of
potential common shares&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;776&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,531&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
diluted common shares outstanding&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;155,401&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,653&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted income from
continuing operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted loss from
discontinued operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted net income per
common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Potentially dilutive
securities excluded as anti-dilutive&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,229&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;725&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock>
  <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_01B20AD8-4BC6-40D0-A417-1094B81A4A61_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;11.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Stockholders&amp;#x2019;
Equity&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Cash Dividends
&amp;#x2014;&lt;/i&gt; The Company paid cash dividends during the three months
ended March&amp;#xA0;31, 2011 and 2012 as follows:&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Per&amp;#xA0;Share&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;(in&amp;#xA0;thousands)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2011:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Paid on March&amp;#xA0;30,
2011&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.05&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,708&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Per&amp;#xA0;Share&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;(in&amp;#xA0;thousands)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2012:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Paid on March&amp;#xA0;30,
2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.05&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,788&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On April&amp;#xA0;25, 2012, the
Company&amp;#x2019;s Board of Directors approved a cash dividend on its
common stock in the amount of $0.05 per share to be paid on
June&amp;#xA0;29, 2012 to holders of record as of June&amp;#xA0;15, 2012.
The amount and timing of all future dividend payments, if any, is
subject to the discretion of the Board of Directors and will depend
upon business conditions, results of operations, financial
condition, terms of the Company&amp;#x2019;s credit facilities and other
factors.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On August&amp;#xA0;1, 2007, the
Company&amp;#x2019;s Board of Directors approved a stock buyback program
authorizing purchases of up to $250 million of the Company&amp;#x2019;s
common stock in open market or privately negotiated transactions.
No shares were purchased during the three months ended
March&amp;#xA0;31, 2012 under the program. As of March&amp;#xA0;31, 2012,
the Company is authorized to purchase approximately $113 million of
the Company&amp;#x2019;s outstanding common stock under the program.
Shares purchased under the program are accounted for as treasury
stock.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company purchased 683
shares of treasury stock from employees during the three months
ended March&amp;#xA0;31, 2012. These shares were purchased at fair
market value upon the vesting of restricted stock to provide the
employees with the funds necessary to satisfy payroll tax
withholding obligations. The total purchase price for these shares
was approximately $15,000. These purchases were made pursuant to
the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term
Incentive Plan and not pursuant to the stock buyback
program.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
  <us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_20" unitRef="iso4217_USD">4651000</us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment>
  <us-gaap:ScheduleOfNonvestedShareActivityTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_A9AFDE46-F0D9-4C57-AD99-D09B23F86DC5_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted
stock activity from January&amp;#xA0;1, 2012 to March&amp;#xA0;31, 2012
follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Grant&amp;#xA0;Date&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair
Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
outstanding at January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,213,799&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.13&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.98&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Vested&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(59,459&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.49&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Forfeited&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(5,136&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.70&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
outstanding at March 31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,161,204&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.53&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfNonvestedShareActivityTableTextBlock>
  <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_22" unitRef="iso4217_USD">-258752000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
  <us-gaap:InvestmentIncomeInterest contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_16" unitRef="iso4217_USD">54000</us-gaap:InvestmentIncomeInterest>
  <us-gaap:ProceedsFromLinesOfCredit contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_28" unitRef="iso4217_USD">54500000</us-gaap:ProceedsFromLinesOfCredit>
  <us-gaap:ExplorationAbandonmentAndImpairmentExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_5" unitRef="iso4217_USD">56000</us-gaap:ExplorationAbandonmentAndImpairmentExpense>
  <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_10" unitRef="iso4217_USD">38109000</us-gaap:IncreaseDecreaseInAccountsReceivable>
  <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5007_1000003" unitRef="iso4217_USD">2554000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease>
  <us-gaap:CommitmentsAndContingenciesDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_0AD02BE7-49FA-498B-8F22-72C0A77681CD_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;10.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Commitments,
Contingencies and Other Matters&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2012,
the Company maintained letters of credit in the aggregate amount of
$40.6 million for the benefit of various insurance companies as
collateral for retrospective premiums and retained losses which
could become payable under the terms of the underlying insurance
contracts. These letters of credit expire annually at various times
during the year and are typically renewed. As of March&amp;#xA0;31,
2012, no amounts had been drawn under the letters of
credit.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2012,
the Company had commitments to purchase approximately $338 million
of major equipment for its drilling and pressure pumping
businesses.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s
pressure pumping business has entered into agreements to purchase
minimum quantities of proppants from certain vendors. These
agreements expire in 2013 and 2016. As of March&amp;#xA0;31, 2012, the
remaining obligation under these agreements is approximately $37.4
million, of which materials with a total purchase price of
approximately $8.4 million are expected to be delivered during the
last three quarters of 2012. In the event that the required minimum
quantities are not purchased during any contract year, the Company
would be required to make a liquidated damages payment to the
respective vendor for any shortfall.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In November of 2011, the
Company&amp;#x2019;s pressure pumping business entered into an agreement
with a proppant vendor to advance&amp;#xA0;up to $12.0 million to such
vendor to finance the construction of certain processing
facilities. This advance is secured by the underlying processing
facilities and bears interest at an annual rate of 5.0%. Repayment
of the advance is to be made through discounts applied to purchases
from the vendor and repayment of all amounts advanced must be made
no later than October&amp;#xA0;1, 2017. As of March&amp;#xA0;31, 2012,
advances of approximately $5.1 million had been made under this
agreement and repayments of approximately $145,000 had been
received resulting in a balance outstanding of approximately $4.9
million.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company is party to
various legal proceedings arising in the normal course of its
business. The Company does not believe that the outcome of these
proceedings, either individually or in the aggregate, will have a
material adverse effect on its financial condition, results of
operations or cash flows.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:CommitmentsAndContingenciesDisclosureTextBlock>
  <us-gaap:SegmentReportingDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_13B0B922-227E-48A9-90B0-BEB50C0A513A_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;5.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Business
Segments&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company&amp;#x2019;s
revenues, operating profits and identifiable assets are primarily
attributable to three business segments: (i)&amp;#xA0;contract drilling
of oil and natural gas wells, (ii)&amp;#xA0;pressure pumping services
and (iii)&amp;#xA0;the investment, on a working interest basis, in oil
and natural gas properties. Each of these segments represents a
distinct type of business. These segments have separate management
teams which report to the Company&amp;#x2019;s chief operating decision
maker. The results of operations in these segments are regularly
reviewed by the chief operating decision maker for purposes of
determining resource allocation and assessing performance. As
discussed in Note 2, included in discontinued operations for the
three months ended March&amp;#xA0;31, 2011 are the operating results
for an electric wireline business that was acquired on
October&amp;#xA0;1, 2010 and sold in January 2011. Separate financial
data for each of our business segments is provided in the table
below (in thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="78%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;490,703&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;378,025&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;241,722&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;179,659&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14,717&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10,387&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total segment
revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;747,142&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;568,071&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Elimination of intercompany
revenues (a)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,221&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(667&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;745,921&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;567,404&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income before income
taxes:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;111,771&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;80,519&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;46,787&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;41,378&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,518&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,818&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;166,076&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;126,715&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and
other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(10,812&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(10,772&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net gain on asset disposals
(b)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2,400&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,604&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest income&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;54&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;43&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest expense&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4,582&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(3,889&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;55&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;119&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations before income taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,191&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;113,820&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="74%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable
assets:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,384,088&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,252,116&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;789,213&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;748,643&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;44,990&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and other
(c)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;142,413&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;176,152&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total assets&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,363,832&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,221,901&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="BORDER-BOTTOM: #000000 0.5pt solid; LINE-HEIGHT: 8px; MARGIN-TOP: 0px; WIDTH: 10%; MARGIN-BOTTOM: 2px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(a)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Consists of contract
drilling intercompany revenues for drilling services provided to
the oil and natural gas exploration and production
segment.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(b)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net gains or losses
associated with the disposal of assets relate to corporate strategy
decisions of the executive management group. Accordingly, the
related gains or losses have been separately presented and excluded
from the results of specific segments.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(c)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and other assets
primarily include cash on hand, income taxes receivable and certain
deferred tax assets.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:SegmentReportingDisclosureTextBlock>
  <us-gaap:IncomeLossFromContinuingOperations contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_25" unitRef="iso4217_USD">97274000</us-gaap:IncomeLossFromContinuingOperations>
  <us-gaap:GoodwillPeriodIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_FFFCCDE6-C4A0-4618-9A73-E01A973F7B2E_5003_2" unitRef="iso4217_USD" xsi:nil="true"/>
  <us-gaap:LongTermDebtTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_50CA920E-8C4F-483E-AB58-E0FBE23A1B42_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;9.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Long Term
Debt&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Credit Facilities
&amp;#x2014;&lt;/i&gt; On August&amp;#xA0;19, 2010, the Company entered into a
Credit Agreement (the &amp;#x201C;Credit Agreement&amp;#x201D;) with Wells
Fargo Bank, N.A., as administrative agent, letter of credit issuer,
swing line lender and lender, and each of the other letter of
credit issuer and lender parties thereto. The Credit Agreement is a
committed senior unsecured credit facility that includes a
revolving credit facility and a term loan
facility.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The revolving credit
facility permits aggregate borrowings of up to $400 million and
contains a letter of credit facility that is limited to $150
million and a swing line facility that is limited to $40 million.
Subject to customary conditions, the Company may request that the
lenders&amp;#x2019; aggregate commitments with respect to the revolving
credit facility be increased by up to $100 million, not to exceed
total commitments of $500 million. The maturity date for the
revolving facility is August&amp;#xA0;19, 2013.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The term loan facility
provided for a loan of $100 million which was funded on
August&amp;#xA0;19, 2010. The term loan facility is payable in
quarterly principal installments commencing November&amp;#xA0;19, 2010.
The installment amounts vary from 1.25% of the original principal
amount for each of the first four quarterly installments, 2.50% of
the original principal amount for each of the subsequent eight
quarterly installments and 5.00% of the original principal amount
for the next subsequent three quarterly installments, with the
remainder becoming due at maturity. The maturity date for the term
loan facility is August&amp;#xA0;19, 2014.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loans under the Credit
Agreement bear interest by reference, at the Company&amp;#x2019;s
election, to the LIBOR rate or base rate. The applicable margin on
LIBOR rate loans varies from 2.75% to 3.75% and the applicable
margin on base rate loans varies from 1.75% to 2.75%, in each case
determined based upon the Company&amp;#x2019;s debt to capitalization
ratio. As of December&amp;#xA0;31, 2011, the applicable margin on LIBOR
rate loans was 2.75% and the applicable margin on base rate loans
was 1.75%. A letter of credit fee is payable by the Company equal
to the applicable margin for LIBOR rate loans times the daily
amount available to be drawn under outstanding letters of credit.
The commitment fee payable to the lenders for the unused portion of
the revolving credit facility varies from 0.50% to 0.75% based upon
the Company&amp;#x2019;s debt to capitalization ratio and was 0.50% as
of March&amp;#xA0;31, 2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Each domestic subsidiary of
the Company other than any immaterial subsidiary has
unconditionally guaranteed all existing and future indebtedness and
liabilities of the Company and the other guarantors arising under
the Credit Agreement and other loan documents. Such guarantees also
cover obligations of the Company and any subsidiary of the Company
arising under any interest rate swap contract with any person while
such person is a lender or affiliate of a lender under the Credit
Agreement.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Credit Agreement
contains customary representations, warranties, indemnities and
affirmative and negative covenants. The Credit Agreement also
requires compliance with two financial covenants. The Company must
not permit its debt to capitalization ratio to exceed 45% at any
time. The Credit Agreement generally defines the debt to
capitalization ratio as the ratio of (a)&amp;#xA0;total borrowed money
indebtedness to (b)&amp;#xA0;the sum of such indebtedness plus
consolidated net worth, with consolidated net worth determined as
of the last day of the most recently ended fiscal quarter. The
Company also must not permit the interest coverage ratio as of the
last day of a fiscal quarter to be less than 3.00 to 1.00. The
Credit Agreement generally defines the interest coverage ratio as
the ratio of earnings before interest, taxes, depreciation and
amortization (&amp;#x201C;EBITDA&amp;#x201D;) of the four prior fiscal
quarters to interest charges for the same period. The Company was
in compliance with these covenants at March 31,
2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As of March&amp;#xA0;31, 2012,
the Company had $90.0 million principal amount outstanding under
the term loan facility at an interest rate of 3.00% and
approximately $109 million principal amount outstanding under the
revolving credit facility at a weighted average interest rate of
3.28%. The carrying value of the balances outstanding under the
term loan facility and the revolving credit facility approximate
fair value due to the frequency at which the interest rate resets.
The Company had $40.6 million in letters of credit outstanding at
March&amp;#xA0;31, 2012 and, as a result, had available borrowing
capacity of approximately $251 million at that
date.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Senior Notes &amp;#x2014;&lt;/i&gt;
On October&amp;#xA0;5, 2010, the Company completed the issuance and
sale of $300 million in aggregate principal amount of its 4.97%
Series A Senior Notes due October&amp;#xA0;5, 2020 (the
&amp;#x201C;Notes&amp;#x201D;) in a private placement. The fair value of the
Notes at March&amp;#xA0;31, 2012 was approximately $323 million based
on discounted cash flows associated with the Notes using current
market rates of interest. The Notes are senior unsecured
obligations of the Company which rank equally in right of payment
with all other unsubordinated indebtedness of the Company. The
Notes are guaranteed on a senior unsecured basis by each of the
existing domestic subsidiaries of the Company other than immaterial
subsidiaries.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Notes bear interest at
a rate of 4.97%&amp;#xA0;per annum. The Company will pay interest on
the Notes on April&amp;#xA0;5 and October&amp;#xA0;5 of each year. The
Notes will mature on October&amp;#xA0;5, 2020. The Notes are prepayable
at the Company&amp;#x2019;s option, in whole or in part, provided that
in the case of a partial prepayment, prepayment must be in an
amount not less than 5% of the aggregate principal amount of the
Notes then outstanding, at any time and from time to time at 100%
of the principal amount prepaid, plus accrued and unpaid interest
to the prepayment date, plus a &amp;#x201C;make-whole&amp;#x201D; premium as
specified in the note purchase agreement. The Company must offer to
prepay the Notes upon the occurrence of any change of control. In
addition, the Company must offer to prepay the Notes upon the
occurrence of certain asset dispositions if the proceeds therefrom
are not timely reinvested in productive assets. If any offer to
prepay is accepted, the purchase price of each prepaid Note is 100%
of the principal amount thereof, plus accrued and unpaid interest
thereon to the prepayment date.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The note purchase agreement
requires compliance with two financial covenants. The Company must
not permit its debt to capitalization ratio to exceed 50% at any
time. The note purchase agreement generally defines the debt to
capitalization ratio as the ratio of (a)&amp;#xA0;total borrowed money
indebtedness to (b)&amp;#xA0;the sum of such indebtedness plus
consolidated net worth, with consolidated net worth determined as
of the last day of the most recently ended fiscal quarter. The
Company also must not permit the interest coverage ratio as of the
last day of a fiscal quarter to be less than 2.50 to 1.00. The note
purchase agreement generally defines the interest coverage ratio as
the ratio for the four prior quarters of EBITDA to interest charges
for that same period. The Company was in compliance with these
covenants at March 31, 2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Events of default under the
note purchase agreement and the Credit Agreement include failure to
pay principal or interest when due, failure to comply with the
financial and operational covenants, a cross default event, a
judgment in excess of a threshold event, the guaranty agreement
ceasing to be enforceable, the occurrence of certain ERISA events,
a change of control event and bankruptcy and other insolvency
events. If an event of default under the note purchase agreement
occurs and is continuing, then holders of a majority in principal
amount of the Notes have the right to declare all the Notes
then-outstanding to be immediately due and payable. In addition, if
the Company defaults in payments on any Note, then until such
defaults are cured, the holder thereof may declare all the Notes
held by it to be immediately due and payable.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company incurred
approximately $10.8 million in debt issuance costs during 2010 in
connection with the Credit Agreement and the Senior Notes discussed
above. These costs were deferred and will be recognized as interest
expense over the term of the underlying debt. Interest expense
related to the amortization of debt issuance costs for the Credit
Agreement and the Senior Notes was approximately $604,000 for the
three months ended March&amp;#xA0;31, 2012 and 2011.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Presented below is a
schedule of the principal repayment requirements of long-term debt
by fiscal year as of March&amp;#xA0;31, 2012 (in
thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="68%" align="center"&gt;
&lt;tr&gt;
&lt;td width="87%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Year ending
December&amp;#xA0;31,&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2013&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;121,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2014&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;70,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2015&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2016&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Thereafter&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;498,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:LongTermDebtTextBlock>
  <us-gaap:CostsAndExpenses contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_13" unitRef="iso4217_USD">588257000</us-gaap:CostsAndExpenses>
  <us-gaap:AssetRetirementObligationDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_5C6756E0-D068-4206-8C92-2AD325FA5585_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;8.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Asset Retirement
Obligation&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company records a
liability for the estimated costs to be incurred in connection with
the abandonment of oil and natural gas properties in the future.
This liability is included in the caption &amp;#x201C;other&amp;#x201D; in
the liabilities section of the consolidated balance sheet. The
following table describes the changes to the Company&amp;#x2019;s asset
retirement obligations during the three months ended March&amp;#xA0;31,
2012 and 2011 (in thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="82%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance at beginning of
year&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,455&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,063&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liabilities
incurred&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;106&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;65&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liabilities
settled&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(68&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(15&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accretion
expense&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;37&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;35&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revision in estimated costs
of plugging oil and natural gas wells&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;550&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(2&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Asset retirement obligation
at end of period&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,080&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,146&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:AssetRetirementObligationDisclosureTextBlock>
  <us-gaap:DividendsCommonStockCash contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5007_1000009" unitRef="iso4217_USD">7788000</us-gaap:DividendsCommonStockCash>
  <us-gaap:ScheduleOfGoodwillTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_CC53C8C9-8FAA-4442-A21A-CC68DA076204_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Goodwill&lt;/i&gt;
&amp;#x2014; Goodwill by operating segment as of March&amp;#xA0;31, 2012 and
changes for the three months then ended are as follows (in
thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="84%" align="center"&gt;
&lt;tr&gt;
&lt;td width="72%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Contract&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Drilling&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pressure&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pumping&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance December&amp;#xA0;31,
2011&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;86,234&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;67,575&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,809&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Changes to
goodwill&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance March&amp;#xA0;31,
2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;86,234&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;67,575&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,809&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfGoodwillTextBlock>
  <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_17" unitRef="iso4217_USD">263665000</us-gaap:NetCashProvidedByUsedInOperatingActivities>
  <us-gaap:ComprehensiveIncomeNetOfTax contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_FD7BF877-8A75-4BEC-8C82-4386DE336B61_1_4" unitRef="iso4217_USD">99828000</us-gaap:ComprehensiveIncomeNetOfTax>
  <us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_34" unitRef="iso4217_USD_per_shares">0.00</us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare>
  <us-gaap:AssetRetirementObligationLiabilitiesSettled contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_F4AB13C2-7568-438E-BC17-67A2C695F619_1_2" unitRef="iso4217_USD">68000</us-gaap:AssetRetirementObligationLiabilitiesSettled>
  <us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="INF" id="id_22026_A4A17994-713F-4832-AE9E-81485EFD1A08_1_400003" unitRef="shares">13300</us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised>
  <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_20" unitRef="iso4217_USD">153191000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments>
  <us-gaap:ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_E28EE827-1557-43D1-B6E8-22501D4E43E5_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following
table presents the gross carrying amount and accumulated
amortization of intangible assets as of March&amp;#xA0;31, 2012 (in
thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="62%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gross&lt;br /&gt;
Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amount&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Accumulated&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amortization&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Net&amp;#xA0;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amount&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-compete
agreement&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,400&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(700&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;700&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Customer
relationships&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(5,463&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20,037&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total intangible
assets&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;26,900&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(6,163&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20,737&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock>
  <us-gaap:ShareBasedCompensation contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_7" unitRef="iso4217_USD">5458000</us-gaap:ShareBasedCompensation>
  <us-gaap:NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1 contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_42" unitRef="iso4217_USD">2553000</us-gaap:NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1>
  <us-gaap:EarningsPerShareDiluted contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_35" unitRef="iso4217_USD_per_shares">0.62</us-gaap:EarningsPerShareDiluted>
  <us-gaap:StockRepurchasedDuringPeriodShares contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="INF" id="id_22026_CA979DA7-0853-4A7C-8FEC-9C9CEA702EDB_1_1" unitRef="shares">0</us-gaap:StockRepurchasedDuringPeriodShares>
  <us-gaap:IncomeTaxesPaidNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_40" unitRef="iso4217_USD">-1390000</us-gaap:IncomeTaxesPaidNet>
  <us-gaap:CommonStockDividendsPerShareCashPaid contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_FE319E80-46EF-4723-A243-55596E40E2E3_2_2" unitRef="iso4217_USD_per_shares">0.05</us-gaap:CommonStockDividendsPerShareCashPaid>
  <us-gaap:GainLossOnSaleOfPropertyPlantEquipment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_11" unitRef="iso4217_USD">2400000</us-gaap:GainLossOnSaleOfPropertyPlantEquipment>
  <us-gaap:PropertyPlantAndEquipmentTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_A9B5E921-9A28-4444-B14C-B76CD651EB37_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property and
equipment consisted of the following at March&amp;#xA0;31, 2012 and
December&amp;#xA0;31, 2011 (in thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="72%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Equipment&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,899,102&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,730,925&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural gas
properties&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;137,548&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;131,812&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Buildings&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;64,426&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;64,090&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Land&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,467&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,467&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5,112,543&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,938,294&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less accumulated
depreciation and depletion&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,804,280&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,771,028&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property and equipment,
net&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,308,263&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,167,266&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:PropertyPlantAndEquipmentTextBlock>
  <us-gaap:IncreaseDecreaseInAccruedLiabilities contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_14" unitRef="iso4217_USD">-12234000</us-gaap:IncreaseDecreaseInAccruedLiabilities>
  <us-gaap:InterestExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_17" unitRef="iso4217_USD">4582000</us-gaap:InterestExpense>
  <us-gaap:DeferredIncomeTaxExpenseBenefit contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_23" unitRef="iso4217_USD">48407000</us-gaap:DeferredIncomeTaxExpenseBenefit>
  <us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5007_1000006" unitRef="iso4217_USD">195000</us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised>
  <us-gaap:ProvisionForDoubtfulAccounts contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_12" unitRef="iso4217_USD">1600000</us-gaap:ProvisionForDoubtfulAccounts>
  <us-gaap:RepaymentsOfLongTermDebt contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_27" unitRef="iso4217_USD">2500000</us-gaap:RepaymentsOfLongTermDebt>
  <us-gaap:NonoperatingIncomeExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_19" unitRef="iso4217_USD">-4473000</us-gaap:NonoperatingIncomeExpense>
  <us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_BBF3FC8C-FCE1-424D-8D4A-B083A995889D_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following
table describes the changes to the Company&amp;#x2019;s asset retirement
obligations during the three months ended March&amp;#xA0;31, 2012 and
2011 (in thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="82%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance at beginning of
year&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,455&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,063&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liabilities
incurred&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;106&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;65&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Liabilities
settled&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(68&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(15&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accretion
expense&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;37&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;35&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revision in estimated costs
of plugging oil and natural gas wells&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;550&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(2&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Asset retirement obligation
at end of period&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,080&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,146&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock>
  <us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_26" unitRef="iso4217_USD">166000</us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities>
  <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_1AA25399-DC49-4AB7-94BC-1AA98156996A_1_21" unitRef="shares">3229000</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
  <us-gaap:IncomeLossFromContinuingOperationsPerBasicShare contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_29" unitRef="iso4217_USD_per_shares">0.62</us-gaap:IncomeLossFromContinuingOperationsPerBasicShare>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="INF" id="id_22026_A4A17994-713F-4832-AE9E-81485EFD1A08_1_400002" unitRef="shares">40000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod>
  <us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_33" unitRef="iso4217_USD_per_shares">0.62</us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare>
  <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_19" unitRef="iso4217_USD">263403000</us-gaap:PaymentsToAcquirePropertyPlantAndEquipment>
  <us-gaap:ScheduleOfSubsequentEventsTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_481B7DAF-FB97-4FCB-B3C5-49A2E0017DEA_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;15.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Subsequent
Event&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;!-- xbrl,body --&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On April 23,
2012, the Company sold its flowback operations to a subsidiary of
TETRA Technologies, Inc. in a cash transaction. The sale price was
$42.5 million and a subsidiary of the Company retained the
associated financial working capital of approximately $5 million.
The Company expects to report a pretax gain of approximately $20
million in the second quarter of 2012 as a result of this
transaction.&lt;/font&gt;&lt;/p&gt;
&lt;!-- /xbrl,ns --&gt;&lt;/div&gt;</us-gaap:ScheduleOfSubsequentEventsTextBlock>
  <us-gaap:DeferredRevenueRevenueRecognized contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-5" id="id_22026_57972EF4-F72A-4E9E-BC94-CF9BEC8E6B05_1_0" unitRef="iso4217_USD">1800000</us-gaap:DeferredRevenueRevenueRecognized>
  <us-gaap:EarningsPerShareBasic contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_31" unitRef="iso4217_USD_per_shares">0.62</us-gaap:EarningsPerShareBasic>
  <us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_E3AE42A1-A73F-4785-BE9D-20BEAFE49341_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accrued
expenses consisted of the following at March&amp;#xA0;31, 2012 and
December&amp;#xA0;31, 2011 (in thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="74%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Salaries, wages, payroll
taxes and benefits&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;38,601&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58,692&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Workers&amp;#x2019; compensation
liability&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;65,778&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;66,121&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property, sales, use and
other taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12,591&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,850&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Insurance, other than
workers&amp;#x2019; compensation&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,988&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,012&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accrued interest
payable&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8,429&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,937&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred
revenue&amp;#x2014;current&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,944&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,229&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2009 Performance Unit
Awards&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,719&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,640&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10,392&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,148&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;152,442&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;164,629&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock>
  <us-gaap:SalesRevenueNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_4" unitRef="iso4217_USD">745921000</us-gaap:SalesRevenueNet>
  <us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_FD463ED1-D812-48DA-A2FA-53DC8DAE9506_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Goodwill and Intangible
Assets&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Goodwill&lt;/i&gt; &amp;#x2014;
Goodwill by operating segment as of March&amp;#xA0;31, 2012 and changes
for the three months then ended are as follows (in
thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="84%" align="center"&gt;
&lt;tr&gt;
&lt;td width="72%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Contract&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Drilling&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pressure&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Pumping&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance December&amp;#xA0;31,
2011&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;86,234&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;67,575&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,809&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Changes to
goodwill&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Balance March&amp;#xA0;31,
2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;86,234&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;67,575&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,809&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;There were no accumulated
impairment losses as of March&amp;#xA0;31, 2012 or December&amp;#xA0;31,
2011.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Goodwill is evaluated at
least annually on December&amp;#xA0;31 to determine if the fair value
of recorded goodwill has decreased below its carrying value. For
purposes of impairment testing, goodwill is evaluated at the
reporting unit level. The Company&amp;#x2019;s reporting units for
impairment testing have been determined to be its operating
segments. Goodwill impairment is measured using a two-step
impairment test. The first step is to compare the fair value of an
entity&amp;#x2019;s reporting units to the respective carrying value of
those reporting units. If the carrying value of a reporting unit
exceeds its fair value the second step of the impairment test is
performed whereby the fair value of the reporting unit is allocated
to its identifiable tangible and intangible assets and liabilities
with any remaining fair value representing the fair value of
goodwill. If the resulting fair value of goodwill is less than the
carrying value of goodwill, an impairment loss would be recognized
in the amount of the shortfall.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Intangible Assets&lt;/i&gt;
&amp;#x2014; Intangible assets were recorded in the pressure pumping
operating segment in connection with the fourth quarter 2010
acquisition of the assets of a pressure pumping business. As a
result of the purchase price allocation, the Company recorded
intangible assets related to a non-compete agreement and the
customer relationships acquired. These intangible assets were
recorded at fair value on the date of
acquisition.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The non-compete agreement
has a term of three years from October&amp;#xA0;1, 2010. The value of
this agreement was estimated using a with and without scenario
where cash flows were projected through the term of the agreement
assuming the agreement is in place and compared to cash flows
assuming the non-compete agreement was not in place. The intangible
asset associated with the non-compete agreement is being amortized
on a straight-line basis over the three-year term of the agreement.
Amortization expense of $117,000 was recorded in the three months
ended March&amp;#xA0;31, 2012 and 2011 associated with the non-compete
agreement.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The value of the customer
relationships was estimated using a multi-period excess earnings
model to determine the present value of the projected cash flows
associated with the customers in place at the time of the
acquisition and taking into account a contributory asset charge.
The resulting intangible asset is being amortized on a
straight-line basis over seven years. Amortization expense of
$911,000 was recorded in the three months ended March&amp;#xA0;31, 2012
and 2011 associated with customer relationships.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
presents the gross carrying amount and accumulated amortization of
intangible assets as of March&amp;#xA0;31, 2012 (in
thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="62%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="7%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Gross&lt;br /&gt;
Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amount&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Accumulated&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amortization&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Net&amp;#xA0;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Amount&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-compete
agreement&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,400&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(700&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;700&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Customer
relationships&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;25,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(5,463&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20,037&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total intangible
assets&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;26,900&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(6,163&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20,737&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock>
  <us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_821A1B1A-DA8D-4344-835C-B19A7186D428_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Presented below
is a schedule of the principal repayment requirements of long-term
debt by fiscal year as of March&amp;#xA0;31, 2012 (in
thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="68%" align="center"&gt;
&lt;tr&gt;
&lt;td width="87%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Year ending
December&amp;#xA0;31,&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2013&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;121,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2014&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;70,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2015&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2016&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Thereafter&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;498,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock>
  <us-gaap:AssetRetirementObligationRevisionOfEstimate contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_F4AB13C2-7568-438E-BC17-67A2C695F619_1_4" unitRef="iso4217_USD">550000</us-gaap:AssetRetirementObligationRevisionOfEstimate>
  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_14" unitRef="iso4217_USD">157664000</us-gaap:OperatingIncomeLoss>
  <us-gaap:InterestPaidNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_38" unitRef="iso4217_USD">-364000</us-gaap:InterestPaidNet>
  <us-gaap:IncreaseDecreaseInAccountsPayable contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_13" unitRef="iso4217_USD">30418000</us-gaap:IncreaseDecreaseInAccountsPayable>
  <us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_6C10ECA2-AC6B-4845-9A7E-1216F14A54BE_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;1.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Basis of Consolidation
and Presentation&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The unaudited interim
consolidated financial statements include the accounts of
Patterson-UTI Energy, Inc. (the &amp;#x201C;Company&amp;#x201D;) and its
wholly-owned subsidiaries. All significant intercompany accounts
and transactions have been eliminated. Except for wholly-owned
subsidiaries, the Company has no controlling financial interests in
any entity which would require consolidation.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The unaudited interim
consolidated financial statements have been prepared by management
of the Company pursuant to the rules and regulations of the
Securities and Exchange Commission. Certain information and
footnote disclosures normally included in financial statements
prepared in accordance with accounting principles generally
accepted in the United States of America have been omitted pursuant
to such rules and regulations, although the Company believes the
disclosures included either on the face of the financial statements
or herein are sufficient to make the information presented not
misleading. In the opinion of management, all adjustments which are
of a normal recurring nature considered necessary for a fair
statement of the information in conformity with accounting
principles generally accepted in the United States of America have
been included. The Unaudited Consolidated Balance Sheet as of
December&amp;#xA0;31, 2011, as presented herein, was derived from the
audited consolidated balance sheet of the Company, but does not
include all disclosures required by accounting principles generally
accepted in the United States of America. These unaudited
consolidated financial statements should be read in conjunction
with the consolidated financial statements and related notes
included in the Company&amp;#x2019;s Annual Report on Form&amp;#xA0;10-K for
the fiscal year ended December&amp;#xA0;31, 2011. The results of
operations for the three months ended March&amp;#xA0;31, 2012 are not
necessarily indicative of the results to be expected for the full
year.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The U.S.&amp;#xA0;dollar is the
functional currency for all of the Company&amp;#x2019;s operations
except for its Canadian operations, which uses the Canadian dollar
as its functional currency. The effects of exchange rate changes
are reflected in accumulated other comprehensive income, which is a
separate component of stockholders&amp;#x2019; equity.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The carrying values of cash
and cash equivalents, trade receivables and accounts payable
approximate fair value.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company provides a dual
presentation of its net income (loss) per common share in its
unaudited consolidated statements of operations: Basic net income
(loss) per common share (&amp;#x201C;Basic EPS&amp;#x201D;) and diluted net
income (loss) per common share (&amp;#x201C;Diluted
EPS&amp;#x201D;).&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic EPS excludes dilution
and is computed by first allocating earnings between common
stockholders and holders of non-vested shares of restricted stock.
Basic EPS is then determined by dividing the earnings attributable
to common stockholders by the weighted average number of common
shares outstanding during the period, excluding non-vested shares
of restricted stock.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted EPS is based on the
weighted average number of common shares outstanding plus the
dilutive effect of potential common shares, including stock
options, non-vested shares of restricted stock and restricted stock
units. The dilutive effect of stock options and restricted stock
units is determined using the treasury stock method. The dilutive
effect of non-vested shares of restricted stock is based on the
more dilutive of the treasury stock method or the two-class method,
assuming a reallocation of undistributed earnings to common
stockholders after considering the dilutive effect of potential
common shares other than non-vested shares of restricted
stock.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The following table
presents information necessary to calculate income from continuing
operations per share, loss from discontinued operations per share
and net income per share for the three months ended March&amp;#xA0;31,
2012 and 2011 as well as potentially dilutive securities excluded
from the weighted average number of diluted common shares
outstanding, as their inclusion would have been anti-dilutive (in
thousands, except per share amounts):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"&gt;
&lt;tr&gt;
&lt;td width="84%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;BASIC
EPS:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;97,274&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,619&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjust for income
attributed to holders of non-vested restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(742&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations, net&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(367&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjust for loss attributed
to holders of non-vested restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(364&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,625&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic income from
continuing operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic loss from
discontinued operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Basic net income per common
share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;DILUTED
EPS:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Add incremental earnings
related to potential common shares&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Adjusted income from
continuing operations attributed to common stockholders&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;96,532&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;71,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,625&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,122&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Add dilutive effect of
potential common shares&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;776&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,531&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted average number of
diluted common shares outstanding&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;155,401&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;154,653&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted income from
continuing operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted loss from
discontinued operations per common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Diluted net income per
common share&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.62&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.46&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Potentially dilutive
securities excluded as anti-dilutive&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,229&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;725&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock>
  <us-gaap:OilAndGasSalesRevenue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_3" unitRef="iso4217_USD">14717000</us-gaap:OilAndGasSalesRevenue>
  <us-gaap:InterestPaidCapitalized contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_39" unitRef="iso4217_USD">1968000</us-gaap:InterestPaidCapitalized>
  <us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_B2FD4F17-82E5-4F59-9AD6-F59988327C53_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Weighted-average assumptions used to estimate the grant date
fair values for stock options granted in the three month periods
ended March&amp;#xA0;31, 2012 and 2011 follow:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="84%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Volatility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.72&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;47.43&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected term (in
years)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Dividend yield&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.93&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Risk-free interest
rate&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.83&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.01&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock>
  <us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5007_1000008" unitRef="iso4217_USD">166000</us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet>
  <us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_2D636A04-28C8-47D7-9A32-B02AE08D3DE5_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Discontinued
Operations&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On January&amp;#xA0;27, 2011,
the stock of the Company&amp;#x2019;s electric wireline subsidiary,
Universal Wireline, Inc., was sold in a cash transaction for $25.5
million. Except for inventory, the working capital of Universal
Wireline, Inc. was excluded from the sale and retained by a
subsidiary of the Company. Universal Wireline, Inc. was formed in
2010 to acquire the electric wireline business of Key Energy
Services, Inc. The results of operations of this business have been
presented as results of discontinued operations in these
consolidated financial statements. Upon being classified as held
for sale, the carrying value of&amp;#xA0;the&amp;#xA0;assets to be disposed
of were reduced to&amp;#xA0;fair value less estimated costs to sell
resulting in a charge of $2.2 million in 2010. Due to the fact that
the carrying value of the assets had been adjusted to net
realizable value during 2010, no significant additional gain or
loss was recognized in connection with the sale in
2011.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Summarized operating
results from discontinued operations for the three months ended
March&amp;#xA0;31, 2012, and 2011 are shown below (in
thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="83%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Electric wireline
revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,104&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss before income
taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(576&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income tax
benefit&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;209&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations, net of income tax&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(367&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock>
  <us-gaap:OtherNonoperatingIncome contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_18" unitRef="iso4217_USD">55000</us-gaap:OtherNonoperatingIncome>
  <us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_26A6B6F7-72E7-4B2C-86CD-9B968D720B29_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;4.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Property and
Equipment&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property and equipment
consisted of the following at March&amp;#xA0;31, 2012 and
December&amp;#xA0;31, 2011 (in thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="72%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Equipment&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,899,102&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,730,925&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural gas
properties&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;137,548&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;131,812&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Buildings&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;64,426&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;64,090&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Land&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,467&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,467&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5,112,543&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,938,294&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Less accumulated
depreciation and depletion&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,804,280&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,771,028&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property and equipment,
net&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,308,263&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,167,266&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock>
  <us-gaap:SellingGeneralAndAdministrativeExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_10" unitRef="iso4217_USD">13868000</us-gaap:SellingGeneralAndAdministrativeExpense>
  <us-gaap:IncomeTaxExpenseBenefit contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_24" unitRef="iso4217_USD">55917000</us-gaap:IncomeTaxExpenseBenefit>
  <us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_33" unitRef="iso4217_USD">-6121000</us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease>
  <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_37" unitRef="shares">154625000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
  <us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_32" unitRef="iso4217_USD">408000</us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents>
  <us-gaap:FairValueDisclosuresTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_FEA1E219-50D6-457D-B7FE-4D764D932C3F_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;13.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Fair Values of Financial
Instruments&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The carrying values of cash
and cash equivalents, trade receivables and accounts payable
approximate fair value due to the short-term maturity of these
items. These fair value estimates are considered Level 1 fair value
estimates in the fair value hierarchy of fair value
accounting.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The estimated fair value of
the Company&amp;#x2019;s outstanding debt balances (including current
portion) as of March&amp;#xA0;31, 2012 and December&amp;#xA0;31, 2011 is
set forth below (in thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="92%" align="center"&gt;
&lt;tr&gt;
&lt;td width="64%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,
2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,
2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Borrowings under Credit
Agreement:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revolving credit
facility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;108,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;108,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;110,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;110,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Term loan
facility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;90,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;90,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;92,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;92,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Senior Notes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;322,849&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;315,942&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total debt&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;498,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;521,349&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;502,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;518,442&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The carrying value of the
balance outstanding under the term loan facility and revolving
credit facility approximates fair value as both facilities have a
floating interest rate. The fair value of the 4.97% Series A Senior
Notes at March&amp;#xA0;31, 2012 and December&amp;#xA0;31, 2011 was
measured based on discounted cash flows associated with the Senior
Notes using current market rates of interest at those respective
dates. The current market rates used in measuring this fair value
were 3.91% at March 31, 2012 and 4.07% at December 31, 2011. These
fair value estimates are based on observable market inputs and are
considered Level 2 fair value estimates in the fair value hierarchy
of fair value accounting.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:FairValueDisclosuresTextBlock>
  <us-gaap:IncomeTaxDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_D6B06261-00A1-4ABE-9B88-1523703A6E2B_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;12.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Income
Taxes&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;On January&amp;#xA0;1, 2010,
the Company converted its Canadian operations from a Canadian
branch to a controlled foreign corporation for Federal income tax
purposes. Because the statutory tax rates in Canada are lower than
those in the United States, this transaction triggered a $5.1
million reduction in the Company&amp;#x2019;s deferred tax liabilities,
which is being amortized as a reduction to deferred income tax
expense over the weighted average remaining useful life of the
Canadian assets.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;As a result of the above
conversion, the Company&amp;#x2019;s Canadian assets are no longer
subject to United States taxation, provided that the related
unremitted earnings are permanently reinvested in Canada. Effective
January&amp;#xA0;1, 2010, the Company has elected to permanently
reinvest these unremitted earnings in Canada, and intends to do so
for the foreseeable future. As a result, no deferred United States
federal or state income taxes have been provided on such unremitted
foreign earnings, which totaled approximately $27.0 million as of
March&amp;#xA0;31, 2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:IncomeTaxDisclosureTextBlock>
  <us-gaap:CurrentIncomeTaxExpenseBenefit contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_22" unitRef="iso4217_USD">7510000</us-gaap:CurrentIncomeTaxExpenseBenefit>
  <us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_7EC4585C-201D-492A-B7E9-AB76AECDE472_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted
stock unit activity from January&amp;#xA0;1, 2012 to March&amp;#xA0;31,
2012 follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="79%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Grant&amp;#xA0;Date&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair
Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
units outstanding at January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17,501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.47&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Vested&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Forfeited&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
units outstanding at March 31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17,501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.47&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock>
  <us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_5003086B-FB80-49B5-ADAC-E319396C901C_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;7.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Accrued
Expenses&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accrued expenses consisted
of the following at March&amp;#xA0;31, 2012 and December&amp;#xA0;31, 2011
(in thousands):&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="74%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="6%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Salaries, wages, payroll
taxes and benefits&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;38,601&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;58,692&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Workers&amp;#x2019; compensation
liability&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;65,778&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;66,121&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Property, sales, use and
other taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12,591&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;11,850&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Insurance, other than
workers&amp;#x2019; compensation&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,988&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,012&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Accrued interest
payable&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;8,429&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,937&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred
revenue&amp;#x2014;current&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,944&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,229&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2009 Performance Unit
Awards&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,719&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,640&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10,392&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,148&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;152,442&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;164,629&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Deferred revenue was
recorded in the fourth quarter of 2010 in the purchase price
allocation associated with the Company&amp;#x2019;s acquisition of a
pressure pumping business. The deferred revenue relates to
out-of-market pricing agreements that were in place at the acquired
business at the time of the acquisition. The deferred revenue will
be recognized as pressure pumping revenue over the remaining term
of the pricing agreements. Deferred revenue of approximately $1.8
million and $2.9 million was recognized in the three months ended
March&amp;#xA0;31, 2012 and 2011, respectively, related to these
pricing agreements.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock>
  <us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_40F0501F-5A5E-473E-AD27-5A3AF4C273C4_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Stock-based
Compensation&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company uses
share-based payments to compensate employees and non-employee
directors. The Company recognizes the cost of share-based payments
under the fair-value-based method. Share-based awards consist of
equity instruments in the form of stock options, restricted stock
or restricted stock units and have included service and, in certain
cases, performance conditions. The Company&amp;#x2019;s share-based
awards also include both cash-settled and share-settled performance
unit awards. Cash-settled performance unit awards are accounted for
as liability awards. Share-settled performance unit awards are
accounted for as equity awards. The Company issues shares of common
stock when vested stock options are exercised, when restricted
stock is granted and when restricted stock units and share-settled
performance unit awards vest.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Stock
Options.&lt;/i&gt;&amp;#xA0;The Company estimates the grant date fair values
of stock options using the Black-Scholes-Merton valuation model.
Volatility assumptions are based on the historic volatility of the
Company&amp;#x2019;s common stock over the most recent period equal to
the expected term of the options as of the date the options are
granted. The expected term assumptions are based on the
Company&amp;#x2019;s experience with respect to employee stock option
activity. Dividend yield assumptions are based on the expected
dividends at the time the options are granted. The risk-free
interest rate assumptions are determined by reference to United
States Treasury yields. Weighted-average assumptions used to
estimate the grant date fair values for stock options granted in
the three month periods ended March&amp;#xA0;31, 2012 and 2011
follow:&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="84%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Volatility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48.72&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;47.43&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Expected term (in
years)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;5.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Dividend yield&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1.00&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.93&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Risk-free interest
rate&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.83&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2.01&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;%&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Stock option activity from
January&amp;#xA0;1, 2012 to March&amp;#xA0;31, 2012
follows:&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="78%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Underlying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Exercise&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Outstanding at
January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,081,295&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.73&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;40,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.98&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exercised&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(13,300&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.64&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Outstanding at
March&amp;#xA0;31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,107,995&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.74&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exercisable at
March&amp;#xA0;31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,279,644&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.52&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Restricted
Stock.&lt;/i&gt;&amp;#xA0;For all restricted stock awards to date, shares of
common stock were issued when the awards were made. Non-vested
shares are subject to forfeiture for failure to fulfill service
conditions and, in certain cases, performance conditions.
Non-forfeitable dividends are paid on non-vested shares of
restricted stock. The Company uses the straight-line method to
recognize periodic compensation cost over the vesting
period.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted stock activity
from January&amp;#xA0;1, 2012 to March&amp;#xA0;31, 2012
follows:&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Grant&amp;#xA0;Date&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair
Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
outstanding at January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,213,799&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.13&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;12,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.98&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Vested&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(59,459&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;15.49&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Forfeited&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(5,136&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.70&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
outstanding at March 31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,161,204&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;24.53&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Restricted Stock
Units.&lt;/i&gt;&amp;#xA0;For all restricted stock unit awards made to date,
shares of common stock are not issued until the units vest.
Restricted stock units are subject to forfeiture for failure to
fulfill service conditions. Non-forfeitable cash dividend
equivalents are paid on non-vested restricted stock units. The
Company uses the straight-line method to recognize periodic
compensation cost over the vesting period.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Restricted stock unit
activity from January&amp;#xA0;1, 2012 to March&amp;#xA0;31, 2012
follows:&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="79%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Grant&amp;#xA0;Date&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair
Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
units outstanding at January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17,501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.47&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Vested&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Forfeited&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Non-vested restricted stock
units outstanding at March 31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;17,501&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;23.47&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="PADDING-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Performance Unit
Awards.&lt;/i&gt;&amp;#xA0;In 2009, the Company granted cash-settled
performance unit awards to certain executive officers (the
&amp;#x201C;2009 Performance Units&amp;#x201D;). The 2009 Performance Units
provided for those executive officers to receive a cash payment
upon the achievement of certain performance goals established by
the Compensation Committee during a specified period. The
performance period for the 2009 Performance Units was the period
from April&amp;#xA0;1, 2009 through March&amp;#xA0;31, 2012. The
performance goals for the 2009 Performance Units were tied to the
Company&amp;#x2019;s total shareholder return for the performance period
as compared to total shareholder return for a peer group determined
by the Compensation Committee of the Board of Directors. These
goals were considered to be market conditions under the relevant
accounting standards and the market conditions were factored into
the determination of the fair value of the performance units.
Generally, the recipients would receive a base payment if the
Company&amp;#x2019;s total shareholder return was positive and, when
compared to the peer group, was at or above the
25&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile but
less than the 50&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile, two
times the base if at or above the 50&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile but
less than the 75&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile, and
four times the base if at the 75&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile or
higher. The total base amount with respect to the 2009 Performance
Units was approximately $1.7 million. Because the 2009 Performance
Units were settled in cash at the end of the performance period,
they were accounted for as liability awards and the Company&amp;#x2019;s
pro-rated obligation was measured at estimated fair value at the
end of each reporting period using a Monte Carlo simulation model.
At March&amp;#xA0;31, 2012, the performance period ended and the
Company&amp;#x2019;s total shareholder return was at the
46&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile.&lt;/font&gt; &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The resulting cash payments totaling $1.7 million were
paid in April 2012 and&amp;#xA0;are included in the caption
&amp;#x201C;accrued expenses&amp;#x201D; in the liabilities section of the
consolidated balance sheet at March&amp;#xA0;31, 2012. A compensation
benefit associated with the 2009 Performance Units of approximately
$1.9 million was recognized for the three months ended
March&amp;#xA0;31, 2012 and compensation expense associated with the
2009 Performance Units of approximately $1.2 million was recognized
for the three months ended March&amp;#xA0;31, 2011.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="PADDING-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In 2010 and 2011, the
Company granted stock-settled performance unit awards to certain
executive officers (the &amp;#x201C;2010 Performance Units&amp;#x201D; and
the &amp;#x201C;2011 Performance Units&amp;#x201D;, respectively). The 2010
Performance Units and the 2011 Performance Units provide for those
executive officers to receive a grant of shares of stock upon the
achievement of certain performance goals established by the
Compensation Committee during a specified period. The performance
period for the 2010 Performance Units is the period from
April&amp;#xA0;1, 2010 through March&amp;#xA0;31, 2013, but can extend
through March&amp;#xA0;31, 2015 in certain circumstances. The
performance period for the 2011 Performance Units is the period
from April&amp;#xA0;1, 2011 through March 31, 2014, but can extend
through March&amp;#xA0;31, 2016 in certain circumstances. The
performance goals for the 2010 Performance Units and the 2011
Performance Units are tied to the Company&amp;#x2019;s total shareholder
return for the performance period as compared to total shareholder
return for a peer group determined by the Compensation Committee.
These goals are considered to be market conditions under the
relevant accounting standards and the market conditions were
factored into the determination of the fair value of the
performance units. Generally, the recipients will receive a base
number of shares if the Company&amp;#x2019;s total shareholder return is
positive and, when compared to the peer group, is at the
25&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile, two
times the base if at the 50&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile, and
four times the base if at the 75&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile or
higher. The grant of shares when achievement is between the
25&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;and
75&lt;/font&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline"&gt;th&lt;/sup&gt;&lt;/font&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;percentile will
be determined on a pro-rata basis. The total base number of shares
with respect to the 2010 Performance Units is 89,375 shares and the
total base number of shares with respect to the 2011 Performance
Units is 72,188 shares. Because the 2010 Performance Units and 2011
Performance Units are stock-settled awards, they are accounted for
as equity awards and measured at fair value on the date of grant
using a Monte Carlo simulation model. The fair value of the 2010
Performance Units as of the date of grant was approximately $3.1
million and the fair value of the 2011 Performance Units as of the
date of grant was approximately $5.6 million. These amounts are
charged to expense on a straight-line basis over the performance
period. Compensation expense associated with the 2010 Performance
Units was approximately $260,000 for the three months ended
March&amp;#xA0;31, 2012 and 2011, respectively. Compensation expense
associated with the 2011 Performance Units was approximately
$464,000 for the three months ended March&amp;#xA0;31,
2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock>
  <us-gaap:PaymentsOfDividends contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_25" unitRef="iso4217_USD">7788000</us-gaap:PaymentsOfDividends>
  <us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_848B0396-B2C3-4503-9B9E-F5727A3D3910_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Separate
financial data for each of our business segments is provided in the
table below (in thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="78%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three Months
Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revenues:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;490,703&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;378,025&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;241,722&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;179,659&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14,717&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;10,387&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total segment
revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;747,142&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;568,071&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Elimination of intercompany
revenues (a)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(1,221&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(667&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;745,921&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;567,404&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income before income
taxes:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;111,771&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;80,519&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;46,787&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;41,378&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,518&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,818&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;166,076&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;126,715&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and
other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(10,812&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(10,772&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net gain on asset disposals
(b)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;2,400&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,604&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest income&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;54&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;43&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Interest expense&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(4,582&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(3,889&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Other&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;55&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;119&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income from continuing
operations before income taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;153,191&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;113,820&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="74%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Identifiable
assets:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Contract
drilling&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,384,088&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;3,252,116&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Pressure pumping&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;789,213&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;748,643&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Oil and natural
gas&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;48,118&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;44,990&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and other
(c)&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;142,413&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;176,152&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total assets&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,363,832&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;4,221,901&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="BORDER-BOTTOM: #000000 0.5pt solid; LINE-HEIGHT: 8px; MARGIN-TOP: 0px; WIDTH: 10%; MARGIN-BOTTOM: 2px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(a)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Consists of contract
drilling intercompany revenues for drilling services provided to
the oil and natural gas exploration and production
segment.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(b)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Net gains or losses
associated with the disposal of assets relate to corporate strategy
decisions of the executive management group. Accordingly, the
related gains or losses have been separately presented and excluded
from the results of specific segments.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(c)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Corporate and other assets
primarily include cash on hand, income taxes receivable and certain
deferred tax assets.&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock>
  <us-gaap:TreasuryStockValueAcquiredCostMethod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5007_1000010" unitRef="iso4217_USD">15000</us-gaap:TreasuryStockValueAcquiredCostMethod>
  <us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_80AD2B45-E63B-48B6-8736-83380017593E_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Summarized
operating results from discontinued operations for the three months
ended March&amp;#xA0;31, 2012, and 2011 are shown below (in
thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="83%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="5%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Three&amp;#xA0;Months&amp;#xA0;Ended&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;
31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Electric wireline
revenues&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;1,104&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss before income
taxes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(576&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Income tax
benefit&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;209&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Loss from discontinued
operations, net of income tax&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#x2014;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(367&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock>
  <us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_30" unitRef="iso4217_USD_per_shares">0.00</us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare>
  <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_38" unitRef="shares">155401000</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
  <us-gaap:OtherComprehensiveIncomeLossTax contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_FD7BF877-8A75-4BEC-8C82-4386DE336B61_1_2" unitRef="iso4217_USD">0</us-gaap:OtherComprehensiveIncomeLossTax>
  <us-gaap:OilAndGasProductionExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_8" unitRef="iso4217_USD">2730000</us-gaap:OilAndGasProductionExpense>
  <us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_810566C9-93C0-4AA8-BF99-32585918D953_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Stock option
activity from January&amp;#xA0;1, 2012 to March&amp;#xA0;31, 2012
follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="78%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="4%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Underlying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Weighted&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Average&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Exercise&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Outstanding at
January&amp;#xA0;1, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,081,295&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.73&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Granted&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;40,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;19.98&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exercised&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;(13,300&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;)&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;14.64&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Outstanding at
March&amp;#xA0;31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,107,995&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.74&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Exercisable at
March&amp;#xA0;31, 2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;6,279,644&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;20.52&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock>
  <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_31" unitRef="iso4217_USD">-11442000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
  <us-gaap:AssetRetirementObligationLiabilitiesIncurred contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_F4AB13C2-7568-438E-BC17-67A2C695F619_1_1" unitRef="iso4217_USD">106000</us-gaap:AssetRetirementObligationLiabilitiesIncurred>
  <us-gaap:ProfitLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_27" unitRef="iso4217_USD">97274000</us-gaap:ProfitLoss>
  <us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_1AA25399-DC49-4AB7-94BC-1AA98156996A_1_16" unitRef="shares">776000</us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment>
  <pten:ContractDrillingExpenses contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_6" unitRef="iso4217_USD">282649000</pten:ContractDrillingExpenses>
  <pten:IncomeLossFromContinuingOperationsAvailableToCommonShareholders contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_1AA25399-DC49-4AB7-94BC-1AA98156996A_1_12" unitRef="iso4217_USD">96532000</pten:IncomeLossFromContinuingOperationsAvailableToCommonShareholders>
  <pten:AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_1AA25399-DC49-4AB7-94BC-1AA98156996A_1_14" unitRef="iso4217_USD">96532000</pten:AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares>
  <pten:IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_1AA25399-DC49-4AB7-94BC-1AA98156996A_1_2" unitRef="iso4217_USD">-742000</pten:IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares>
  <pten:CommonStockDividendsPerShareDeclaredAndPaid contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="2" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_39" unitRef="iso4217_USD_per_shares">0.05</pten:CommonStockDividendsPerShareDeclaredAndPaid>
  <pten:CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_9D32C1F3-8563-4BBE-AC34-C2D86A00F580_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The estimated
fair value of the Company&amp;#x2019;s outstanding debt balances
(including current portion) as of March&amp;#xA0;31, 2012 and
December&amp;#xA0;31, 2011 is set forth below (in
thousands):&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="92%" align="center"&gt;
&lt;tr&gt;
&lt;td width="64%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="3%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;March&amp;#xA0;31,
2012&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="6" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;December&amp;#xA0;31,
2011&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Carrying&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Fair&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Borrowings under Credit
Agreement:&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Revolving credit
facility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;108,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;108,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;110,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;110,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Term loan
facility&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;90,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;90,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;92,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;92,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Senior Notes&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;322,849&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;300,000&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;315,942&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 1px solid"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Total debt&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;498,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;521,349&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;502,500&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;518,442&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="FONT-SIZE: 1px"&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;&amp;#xA0;&amp;#xA0;&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;
&lt;p style="BORDER-TOP: #000000 3px double"&gt;&amp;#xA0;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&amp;#xA0;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</pten:CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock>
  <pten:DividendActivityTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_5041C145-0976-49DC-B6C2-AF4D94683BD8_1_0">&lt;div&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;i&gt;Cash
Dividends &amp;#x2014;&lt;/i&gt; The Company paid cash dividends during the
three months ended March&amp;#xA0;31, 2011 and 2012 as
follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Per&amp;#xA0;Share&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;(in&amp;#xA0;thousands)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2011:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Paid on March&amp;#xA0;30,
2011&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.05&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,708&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"&gt;
&lt;tr&gt;
&lt;td width="76%"&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td valign="bottom" width="8%"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Per&amp;#xA0;Share&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="1"&gt;(in&amp;#xA0;thousands)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#CCEEFF"&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;2012:&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="top"&gt;
&lt;p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;Paid on March&amp;#xA0;30,
2012&lt;/font&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;0.05&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font size="1"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;7,788&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" nowrap="nowrap"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#xA0;&amp;#xA0;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;</pten:DividendActivityTextBlock>
  <pten:AssetRetirementObligationAccretionExpenseAccrued contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_F4AB13C2-7568-438E-BC17-67A2C695F619_1_3" unitRef="iso4217_USD">37000</pten:AssetRetirementObligationAccretionExpenseAccrued>
  <pten:RecentlyIssuedAccountingPronouncementsDisclosureTextBlock contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_62E1F7F4-6050-4959-8107-48A23CB0FBCF_1_0">&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;14.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;Recently Issued
Accounting Standards&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In September 2011, the
Financial Accounting Standards Board (&amp;#x201C;FASB&amp;#x201D;) issued an
accounting standard update that simplifies how entities test
goodwill for impairment. This update permits an entity to first
assess qualitative factors to determine whether it is more likely
than not that the fair value of a reporting unit is less than its
carrying amount as a basis for determining whether it is necessary
to perform the two-step goodwill impairment test. Previous guidance
required an entity to test goodwill for impairment, on at least an
annual basis, by comparing the fair value of a reporting unit with
its carrying amount. If the fair value of a reporting unit is less
than its carrying amount, then the second step of the test must be
performed to measure the amount of the impairment loss, if any.
Under the amendments in this update, an entity is not required to
calculate the fair value of a reporting unit unless the entity
determines that it is more likely than not that its fair value is
less than its carrying amount. This update is effective for annual
and interim goodwill impairment tests performed for fiscal years
beginning after December&amp;#xA0;15, 2011. Early adoption is permitted
if an entity&amp;#x2019;s financial statements for the most recent
annual or interim period have not yet been issued. The Company
elected to early adopt this accounting standard update as of
December&amp;#xA0;31, 2011 and such early adoption did not have a
material impact to the Company.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In June 2011, the FASB
issued an accounting standard update that requires that all
non-owner changes in stockholders&amp;#x2019; equity be presented either
in a single continuous statement of comprehensive income or in two
separate but consecutive statements. In the two-statement approach,
the first statement should present total net income and its
components followed consecutively by a second statement that should
present total other comprehensive income, the components of other
comprehensive income, and the total of comprehensive income.
Historically, these components of other comprehensive income and
total comprehensive income have been presented in the statement of
changes in stockholders&amp;#x2019; equity by many companies, including
the Company. This requirement is effective for fiscal years, and
interim periods within those years, beginning after
December&amp;#xA0;15, 2011, and will be effective for the Company in
the quarter ending March&amp;#xA0;31, 2012. The adoption of this update
has resulted in the addition of a new consolidated statement of
comprehensive income being added to the Company&amp;#x2019;s
consolidated financial statements beginning with the quarter ended
March&amp;#xA0;31, 2012.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In May 2011, the FASB
issued an accounting standard update to improve the comparability
of fair value measurements presented and disclosed in financial
statements prepared in accordance with United States GAAP and
International Financial Reporting Standards. The amendments in this
update do not require additional fair value measurements, but
provide additional guidance as to measuring fair value as well as
certain additional disclosure requirements. The requirements in
this update are effective during interim and annual periods
beginning after December&amp;#xA0;15, 2011 and became effective for the
Company in the quarter ending March&amp;#xA0;31, 2012. The adoption of
this update did not have a material impact on the Company&amp;#x2019;s
disclosures included in its consolidated financial
statements.&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</pten:RecentlyIssuedAccountingPronouncementsDisclosureTextBlock>
  <pten:DividendPaymentDateDayMonthAndYear contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" id="id_22026_FE319E80-46EF-4723-A243-55596E40E2E3_2_1">2012-03-30</pten:DividendPaymentDateDayMonthAndYear>
  <pten:PressurePumpingOperatingCost contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_7" unitRef="iso4217_USD">166857000</pten:PressurePumpingOperatingCost>
  <pten:IncreaseDecreaseInIncomeTaxesReceivableAndPayable contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_11" unitRef="iso4217_USD">-5807000</pten:IncreaseDecreaseInIncomeTaxesReceivableAndPayable>
  <pten:IncreaseDecreaseInInventoryAndOtherAssets contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_12" unitRef="iso4217_USD">-5332000</pten:IncreaseDecreaseInInventoryAndOtherAssets>
  <pten:NetDecreaseIncreaseInDepositsOnEquipmentPurchases contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_4A0005CD-32FD-4B2C-89FB-C70FFEC13E31_1_43" unitRef="iso4217_USD">1900000</pten:NetDecreaseIncreaseInDepositsOnEquipmentPurchases>
  <pten:DepreciationDepletionAmortizationAndImpairment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-3" id="id_22026_962440F5-4866-49EC-973C-2946BF4B10DB_1_9" unitRef="iso4217_USD">122953000</pten:DepreciationDepletionAmortizationAndImpairment>
  <pten:DeferredTaxLiabilitiesIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0" decimals="-5" id="id_22026_141460A9-0F3F-4794-9B5D-1A82B0A089EF_1_0" unitRef="iso4217_USD">-5100000</pten:DeferredTaxLiabilitiesIncreaseDecrease>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x441133" id="id_22026_D758973C-452E-459E-8176-255389C1CCDA_1001_3" unitRef="iso4217_USD_per_shares" xsi:nil="true"/>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x441133" id="id_22026_C6F2F385-52E1-4424-BCB3-D143169FD024_1001_2" unitRef="shares" xsi:nil="true"/>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x441133" id="id_22026_D758973C-452E-459E-8176-255389C1CCDA_1001_2" unitRef="iso4217_USD_per_shares" xsi:nil="true"/>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x441133" id="id_22026_C6F2F385-52E1-4424-BCB3-D143169FD024_1001_3" unitRef="shares" xsi:nil="true"/>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x441133" id="id_22026_C6F2F385-52E1-4424-BCB3-D143169FD024_1001_4" unitRef="shares" xsi:nil="true"/>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x452362" decimals="4" id="id_22026_6FE33B14-AA53-4D61-9C9B-58C4DA1DEB57_1_3" unitRef="pure">0.0083</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x452362" decimals="4" id="id_22026_6FE33B14-AA53-4D61-9C9B-58C4DA1DEB57_1_0" unitRef="pure">0.4872</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x452362" decimals="2" id="id_22026_6FE33B14-AA53-4D61-9C9B-58C4DA1DEB57_1_1" unitRef="Year">5.00</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x452362" decimals="4" id="id_22026_6FE33B14-AA53-4D61-9C9B-58C4DA1DEB57_1_2" unitRef="pure">0.0100</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x469077" decimals="2" id="id_22026_17C1D2E0-0181-47AE-B183-6589B2C9D79C_1001_3" unitRef="iso4217_USD_per_shares">15.49</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x469077" decimals="INF" id="id_22026_FC9630F7-521D-42FF-8EA7-71FD34E50A43_1001_400002" unitRef="shares">12000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x469077" decimals="2" id="id_22026_17C1D2E0-0181-47AE-B183-6589B2C9D79C_1001_2" unitRef="iso4217_USD_per_shares">19.98</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x469077" decimals="INF" id="id_22026_FC9630F7-521D-42FF-8EA7-71FD34E50A43_1001_400003" unitRef="shares">59459</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x469077" decimals="INF" id="id_22026_FC9630F7-521D-42FF-8EA7-71FD34E50A43_1001_400004" unitRef="shares">5136</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod>
  <us-gaap:AllocatedShareBasedCompensationExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836" decimals="-5" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_1001_6" unitRef="iso4217_USD">1900000</us-gaap:AllocatedShareBasedCompensationExpense>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_1001_3">Generally,  the recipients would receive a base payment if the Company's total shareholder  return was positive and, when compared to the peer group, was at or above the  25th percentile but less than the 50th percentile, two times the base if at or  above the 50th percentile but less than the 75th percentile, and four times the  base if at the 75th percentile or higher.</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_1001_0">The performance period for the  2009 Performance Units was the period from April 1, 2009 through March 31, 2012.</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:PerformanceAwardBasePayment contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836" decimals="-5" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_1001_4" unitRef="iso4217_USD">1700000</pten:PerformanceAwardBasePayment>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836_454814x452760" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_2001_1">April 1, 2009</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478836_454814x454410" id="id_22026_B62D66B0-6DD4-4B77-B1FD-5D7AAE1A67D6_3001_2">March 31, 2012</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <us-gaap:AllocatedShareBasedCompensationExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837" decimals="0" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_1001_400013" unitRef="iso4217_USD">260000</us-gaap:AllocatedShareBasedCompensationExpense>
  <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_1001_400008">Generally, the recipients will receive a base number of  shares if the Company's total shareholder return is positive and, when compared  to the peer group, is at the 25th percentile, two times the base if at the 50th  percentile, and four times the base if at the 75th percentile or higher. The  grant of shares when achievement is between the 25th and 75th percentile will be  determined on a pro-rata basis.</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837" decimals="-5" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_1001_400011" unitRef="iso4217_USD">3100000</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_1001_400000">The performance period for  the 2010 Performance Units is the period from April 1, 2010 through March 31,  2013, but can extend through March 31, 2015 in certain circumstances.</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:PerformanceAwardBaseNumberOfShares contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837" decimals="0" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_1001_400009" unitRef="shares">89375</pten:PerformanceAwardBaseNumberOfShares>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837_454814x452760" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_2001_400001">April 1, 2010</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837_454814x454410" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_3001_400002">March 31,  2013</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x478837_454814x454410_476475x487313" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_4001_400003">March 31, 2015</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <us-gaap:AllocatedShareBasedCompensationExpense contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539" decimals="0" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_5001_400014" unitRef="iso4217_USD">464000</us-gaap:AllocatedShareBasedCompensationExpense>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539" decimals="-5" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_5001_400012" unitRef="iso4217_USD">5600000</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_5001_400004">The  performance period for the 2011 Performance Units is the period from April 1,  2011 through March 31, 2014, but can extend through March 31, 2016 in certain  circumstances.</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:PerformanceAwardBaseNumberOfShares contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539" decimals="0" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_5001_400010" unitRef="shares">72188</pten:PerformanceAwardBaseNumberOfShares>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539_454814x452760" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_6001_400005">April&#xA0;1, 2011</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539_454814x454410" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_7001_400006">March 31, 2014</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_441729x483539_454814x454410_476475x487313" id="id_22026_4AAB789A-AB06-4494-9501-DEEB45119F78_8001_400007">March&#xA0;31, 2016</pten:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod>
  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x448949" decimals="-3" id="id_22026_A3366AC3-6AAD-4FF1-AD53-64CBEF7F716E_1001_5" unitRef="iso4217_USD">-10812000</us-gaap:OperatingIncomeLoss>
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  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x450145" decimals="-3" id="id_22026_A3366AC3-6AAD-4FF1-AD53-64CBEF7F716E_2001_4" unitRef="iso4217_USD">166076000</us-gaap:OperatingIncomeLoss>
  <us-gaap:OilAndGasSalesRevenue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x450145" decimals="-3" id="id_22026_2DC6E334-3342-45AD-A6CB-205B13F039AB_1001_3" unitRef="iso4217_USD">14717000</us-gaap:OilAndGasSalesRevenue>
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  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x450145_476476x478838" decimals="-3" id="id_22026_A3366AC3-6AAD-4FF1-AD53-64CBEF7F716E_3001_1" unitRef="iso4217_USD">111771000</us-gaap:OperatingIncomeLoss>
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  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x450145_476476x478839" decimals="-3" id="id_22026_A3366AC3-6AAD-4FF1-AD53-64CBEF7F716E_4001_2" unitRef="iso4217_USD">46787000</us-gaap:OperatingIncomeLoss>
  <us-gaap:OperatingIncomeLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x450145_476476x478840" decimals="-3" id="id_22026_A3366AC3-6AAD-4FF1-AD53-64CBEF7F716E_5001_3" unitRef="iso4217_USD">7518000</us-gaap:OperatingIncomeLoss>
  <us-gaap:SalesRevenueNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x453759" decimals="-3" id="id_22026_2DC6E334-3342-45AD-A6CB-205B13F039AB_4001_5" unitRef="iso4217_USD">-1221000</us-gaap:SalesRevenueNet>
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  <us-gaap:GoodwillPeriodIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_442428x478839" id="id_22026_FFFCCDE6-C4A0-4618-9A73-E01A973F7B2E_5002_2" unitRef="iso4217_USD" xsi:nil="true"/>
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  <us-gaap:TreasuryStockSharesAcquired contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_445071x472876" decimals="INF" id="id_22026_CD345844-5A1A-49F9-B12A-64A536BA5FA7_1001_0" unitRef="shares">683</us-gaap:TreasuryStockSharesAcquired>
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  <us-gaap:DividendsCommonStockCash contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x440920" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5004_700009" unitRef="iso4217_USD">7788000</us-gaap:DividendsCommonStockCash>
  <us-gaap:ProfitLoss contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x440920" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5004_700002" unitRef="iso4217_USD">97274000</us-gaap:ProfitLoss>
  <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x443982" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5005_800003" unitRef="iso4217_USD">2554000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease>
  <us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x444581" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5001_400005" unitRef="shares">5000</us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited>
  <us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x444581" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5001_400006" unitRef="shares">14000</us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised>
  <us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x444581" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5001_400004" unitRef="shares">12000</us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross>
  <us-gaap:TreasuryStockValueAcquiredCostMethod contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x449678" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5006_900010" unitRef="iso4217_USD">15000</us-gaap:TreasuryStockValueAcquiredCostMethod>
  <us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x453698" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5003_600007" unitRef="iso4217_USD">5458000</us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue>
  <us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x453698" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5003_600006" unitRef="iso4217_USD">195000</us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised>
  <us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_452905x453698" decimals="-3" id="id_22026_A1451FA5-02B9-46AC-97CC-46DA1B48B876_5003_600008" unitRef="iso4217_USD">166000</us-gaap:AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet>
  <pten:MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2 contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_453412x479035" decimals="4" id="id_22026_3C6BD637-EF27-44FF-A139-6CB82FEFB1CE_1001_1" unitRef="pure">0.0391</pten:MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2>
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  <us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_453412x491056" decimals="4" id="id_22026_410EF710-E0E1-41F7-9148-78CC00D282D7_1003_8" unitRef="pure">0.005</us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage>
  <us-gaap:AmortizationOfIntangibleAssets contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_454115x441752" decimals="0" id="id_22026_601B4561-35E4-4155-B3E4-7E3D6B20B50C_1002_2" unitRef="iso4217_USD">117000</us-gaap:AmortizationOfIntangibleAssets>
  <us-gaap:FiniteLivedIntangibleAssetsUsefulLife contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_454115x441752" decimals="INF" id="id_22026_601B4561-35E4-4155-B3E4-7E3D6B20B50C_1002_1" unitRef="Year">3</us-gaap:FiniteLivedIntangibleAssetsUsefulLife>
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  <us-gaap:FiniteLivedIntangibleAssetsUsefulLife contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_454115x450059" decimals="INF" id="id_22026_AD99B136-0E61-4216-85AE-8FA873463B24_1001_0" unitRef="Year">7</us-gaap:FiniteLivedIntangibleAssetsUsefulLife>
  <us-gaap:ProceedsFromCollectionOfNotesReceivable contextRef="eol_PE7031----1210-Q0003_STD_91_20120331_0_454689x471061" decimals="0" id="id_22026_2DC2928B-58F1-423B-917A-0942431B745F_1001_3" unitRef="iso4217_USD">145000</us-gaap:ProceedsFromCollectionOfNotesReceivable>
  <us-gaap:GainLossOnDispositionOfAssets contextRef="eol_PE7031----1210-Q0003_STD_91_20120630_0_452505x468879_455296x454107" decimals="-6" id="id_22026_294DE9E5-21A6-4959-9271-7B30D66C3ED3_2002_2" unitRef="iso4217_USD">20000000</us-gaap:GainLossOnDispositionOfAssets>
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        <link:definition>134 - Disclosure - Long Term Debt (Tables)</link:definition>
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        <link:definition>135 - Disclosure - Stockholders' Equity (Tables)</link:definition>
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        <link:definition>136 - Disclosure - Fair Values of Financial Instruments (Tables)</link:definition>
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        <link:definition>137 - Disclosure - Calculation of Income (Loss) Per Share From Continuing and Discontinued Operations (Detail)</link:definition>
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        <link:definition>138 - Disclosure - Discontinued Operations - Additional Information (Detail)</link:definition>
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        <link:definition>139 - Disclosure - Summary of Operating Results from Discontinued Operations (Detail)</link:definition>
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        <link:definition>145 - Disclosure - Property and Equipment (Detail)</link:definition>
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        <link:definition>155 - Disclosure - Changes to Company's Asset Retirement Obligations (Detail)</link:definition>
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        <link:definition>156 - Disclosure - Long Term Debt - Additional Information (Detail)</link:definition>
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        <link:definition>159 - Disclosure - Cash Dividends (Detail)</link:definition>
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        <link:definition>160 - Disclosure - Stockholders' Equity - Additional Information (Detail)</link:definition>
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        <link:definition>161 - Disclosure - Income Taxes - Additional Information (Detail)</link:definition>
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        <link:definition>162 - Disclosure - Estimated Fair Value of Outstanding Debt Balances (Detail)</link:definition>
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        <link:definition>163 - Disclosure - Fair Values of Financial Instruments - Additional Information (Detail)</link:definition>
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  <element name="CommonStockDividendsPerShareDeclaredAndPaid" id="pten_CommonStockDividendsPerShareDeclaredAndPaid" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" id="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CompensationRelatedCostsShareBasedPaymentsDisclosureTable" id="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
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  <element name="ContractDrillingMember" id="pten_ContractDrillingMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ContractTerm" id="pten_ContractTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CreditFacility2010Member" id="pten_CreditFacility2010Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtDisclosureLineItems" id="pten_DebtDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtDisclosureTable" id="pten_DebtDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DebtInstrumentAcceptanceTerms" id="pten_DebtInstrumentAcceptanceTerms" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtInstrumentInterestRatePaymentDate" id="pten_DebtInstrumentInterestRatePaymentDate" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtInstrumentPrepaymentTerms" id="pten_DebtInstrumentPrepaymentTerms" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtRedemptionPricePercentOfPrincipalAmount" id="pten_DebtRedemptionPricePercentOfPrincipalAmount" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtToCapitalizationRatio" id="pten_DebtToCapitalizationRatio" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredTaxLiabilitiesIncreaseDecrease" id="pten_DeferredTaxLiabilitiesIncreaseDecrease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DepositsOnEquipmentPurchases" id="pten_DepositsOnEquipmentPurchases" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DepreciationDepletionAmortizationAndImpairment" id="pten_DepreciationDepletionAmortizationAndImpairment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureAccruedExpensesAdditionalInformationAbstract" id="pten_DisclosureAccruedExpensesAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureBusinessSegmentsAdditionalInformationAbstract" id="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureBusinessSegmentsAssetsAbstract" id="pten_DisclosureBusinessSegmentsAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract" id="pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureBusinessSegmentsRevenuesAbstract" id="pten_DisclosureBusinessSegmentsRevenuesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureCalculationOfIncomeLossPerShareFromContinuingAndDiscontinuedOperationsAbstract" id="pten_DisclosureCalculationOfIncomeLossPerShareFromContinuingAndDiscontinuedOperationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureCashDividendsAbstract" id="pten_DisclosureCashDividendsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureChangesToCompanysAssetRetirementObligationsAbstract" id="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract" id="pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureDiscontinuedOperationsAdditionalInformationAbstract" id="pten_DisclosureDiscontinuedOperationsAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureEstimatedFairValueOfOutstandingDebtBalancesAbstract" id="pten_DisclosureEstimatedFairValueOfOutstandingDebtBalancesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract" id="pten_DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract" id="pten_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureGoodwillByOperatingSegmentAbstract" id="pten_DisclosureGoodwillByOperatingSegmentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract" id="pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureIncomeTaxesAdditionalInformationAbstract" id="pten_DisclosureIncomeTaxesAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureLongTermDebtAdditionalInformationAbstract" id="pten_DisclosureLongTermDebtAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosurePropertyAndEquipmentAbstract" id="pten_DisclosurePropertyAndEquipmentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureRestrictedStockActivityAbstract" id="pten_DisclosureRestrictedStockActivityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureRestrictedStockUnitActivityAbstract" id="pten_DisclosureRestrictedStockUnitActivityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureScheduleOfPrincipalRepaymentRequirementsOfLongTermDebtAbstract" id="pten_DisclosureScheduleOfPrincipalRepaymentRequirementsOfLongTermDebtAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockbasedCompensationAdditionalInformationAbstract" id="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockholdersEquityAdditionalInformationAbstract" id="pten_DisclosureStockholdersEquityAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockOptionActivityAbstract" id="pten_DisclosureStockOptionActivityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureSubsequentEventAdditionalInformationAbstract" id="pten_DisclosureSubsequentEventAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureSummaryOfAccruedExpensesAbstract" id="pten_DisclosureSummaryOfAccruedExpensesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract" id="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract" id="pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DividendActivityTextBlock" id="pten_DividendActivityTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DividendPaymentDateDayMonthAndYear" id="pten_DividendPaymentDateDayMonthAndYear" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DocumentDocumentandEntityInformationAbstract" id="pten_DocumentDocumentandEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ElectricWirelineMember" id="pten_ElectricWirelineMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EmployeeMember" id="pten_EmployeeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EventTimingAxis" id="pten_EventTimingAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="EventTimingDomain" id="pten_EventTimingDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="GoodwillAndIntangibleAssetsDisclosureLineItems" id="pten_GoodwillAndIntangibleAssetsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="GoodwillAndIntangibleAssetsDisclosureTable" id="pten_GoodwillAndIntangibleAssetsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="GoodwillAndIntangibleAssetsNet" id="pten_GoodwillAndIntangibleAssetsNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group1Member" id="pten_Group1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group2Member" id="pten_Group2Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group3Member" id="pten_Group3Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares" id="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromContinuingOperationsAvailableToCommonShareholders" id="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromDiscontinuedOperationsAllocableToNonVestedRestrictedShares" id="pten_IncomeLossFromDiscontinuedOperationsAllocableToNonVestedRestrictedShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesLineItems" id="pten_IncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesTable" id="pten_IncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncreaseDecreaseInIncomeTaxesReceivableAndPayable" id="pten_IncreaseDecreaseInIncomeTaxesReceivableAndPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInInventoryAndOtherAssets" id="pten_IncreaseDecreaseInInventoryAndOtherAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncrementalIncomeLossRelatedToPotentialCommonShares" id="pten_IncrementalIncomeLossRelatedToPotentialCommonShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestCoverageRatio" id="pten_InterestCoverageRatio" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LIBORMember" id="pten_LIBORMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityAdditionalBorrowingCapacity" id="pten_LineOfCreditFacilityAdditionalBorrowingCapacity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" id="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermDebtMaturitiesRepaymentsOfPrincipalTable" id="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2" id="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetDecreaseIncreaseInDepositsOnEquipmentPurchases" id="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonRevolvingSeniorSecuredTermLoanMember" id="pten_NonRevolvingSeniorSecuredTermLoanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NotesReceivableInterestRate" id="pten_NotesReceivableInterestRate" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NotesToFinancialStatementsAbstract" id="pten_NotesToFinancialStatementsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfCovenants" id="pten_NumberOfCovenants" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfReportableBusinessSegments" id="pten_NumberOfReportableBusinessSegments" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OilAndNaturalGasMember" id="pten_OilAndNaturalGasMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfRepurchasePriceToPrincipalDebtAmount" id="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceAwardBaseNumberOfShares" id="pten_PerformanceAwardBaseNumberOfShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceAwardBasePayment" id="pten_PerformanceAwardBasePayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceUnitAwards2009Member" id="pten_PerformanceUnitAwards2009Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceUnitAwards2010Member" id="pten_PerformanceUnitAwards2010Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceUnitAwards2011Member" id="pten_PerformanceUnitAwards2011Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PressurePumpingMember" id="pten_PressurePumpingMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PressurePumpingOperatingCost" id="pten_PressurePumpingOperatingCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrincipalPaymentsPercentage" id="pten_PrincipalPaymentsPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecentlyIssuedAccountingPronouncementsDisclosureTextBlock" id="pten_RecentlyIssuedAccountingPronouncementsDisclosureTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfChangesInAssetRetirementObligationsLineItems" id="pten_ReconciliationOfChangesInAssetRetirementObligationsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfChangesInAssetRetirementObligationsTable" id="pten_ReconciliationOfChangesInAssetRetirementObligationsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="RestrictedStockAwardsMember" id="pten_RestrictedStockAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevolvingCreditFacilityMember" id="pten_RevolvingCreditFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAccruedLiabilitiesLineItems" id="pten_ScheduleOfAccruedLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAccruedLiabilitiesTable" id="pten_ScheduleOfAccruedLiabilitiesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" id="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" id="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAxis" id="pten_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems" id="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" id="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SegmentReportingDisclosureLineItems" id="pten_SegmentReportingDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingDisclosureTable" id="pten_SegmentReportingDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SemiAnnualPaymentFirstPaymentMember" id="pten_SemiAnnualPaymentFirstPaymentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SemiAnnualPaymentSecondPaymentMember" id="pten_SemiAnnualPaymentSecondPaymentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeriesASeniorNotes4.97PercentDueOctober5th2020Member" id="pten_SeriesASeniorNotes4.97PercentDueOctober5th2020Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems" id="pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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</schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.CAL
<SEQUENCE>7
<FILENAME>pten-20120331_cal.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!-- EDGAR Online I-Metrix Xcelerate Taxonomy Calculation Linkbase, based on XBRL 2.1  http://www.edgar-online.com/ -->
<!-- Version: 6.14.9 -->
<!-- Round: ea7289ed-51c8-420a-a455-d12c6bb9bce5 -->
<!-- Creation date: 2012-04-30T04:03:24Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
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    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables">
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DividendActivityTextBlock" xlink:label="pten_DividendActivityTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="pten_DividendActivityTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock">
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
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  <definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock">
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="us-gaap_FairValueDisclosuresTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_FairValueDisclosuresTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables">
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock" xlink:label="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/taxonomy/role/NotesToFinancialStatementsRecentlyIssuedAccountingPronouncementsDisclosureTextBlock">
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_RecentlyIssuedAccountingPronouncementsDisclosureTextBlock" xlink:label="pten_RecentlyIssuedAccountingPronouncementsDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="pten_RecentlyIssuedAccountingPronouncementsDisclosureTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
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    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ScheduleOfSubsequentEventsTextBlock" order="1.0200" priority="2" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/>
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</linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>9
<FILENAME>pten-20120331_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!-- EDGAR Online I-Metrix Xcelerate Taxonomy Labels Linkbase, based on XBRL 2.1  http://www.edgar-online.com/ -->
<!-- Version: 6.14.9 -->
<!-- Round: ea7289ed-51c8-420a-a455-d12c6bb9bce5 -->
<!-- Creation date: 2012-04-30T04:03:24Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2008-03-31.xsd#negated" roleURI="http://xbrl.us/us-gaap/role/label/negated"/>
  <labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_454109_1_1">Accounts Payable And Accrued Liabilities Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_454109_2_1">Accrued Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_22026_455957_1_1">Accounts Payable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_22026_455957_2_1">Accounts payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_22026_445011_1_1">Accounts Receivable Net Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_22026_445011_2_1">Accounts receivable, net of allowance for doubtful accounts of $6,540 and $4,887 at March 31, 2012 and December 31, 2011, respectively</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNetCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedBonusesCurrentAndNoncurrent" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xml:lang="en-US" id="id_22026_445755_1_1">Accrued Bonuses Current And Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl" xml:lang="en-US" id="id_22026_445755_2_1">Pro-rated obligation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedBonusesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedBonusesCurrentAndNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedEmployeeBenefitsCurrent" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent_lbl" xml:lang="en-US" id="id_22026_450287_1_1">Accrued Employee Benefits Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent_lbl" xml:lang="en-US" id="id_22026_450287_2_1">2009 Performance Unit Awards</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedEmployeeBenefitsCurrent" xlink:to="us-gaap_AccruedEmployeeBenefitsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="us-gaap_AccruedIncomeTaxesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedIncomeTaxesCurrent_lbl" xml:lang="en-US" id="id_22026_445635_1_1">Accrued Income Taxes Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedIncomeTaxesCurrent_lbl" xml:lang="en-US" id="id_22026_445635_2_1">Federal and state income taxes payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedIncomeTaxesCurrent" xlink:to="us-gaap_AccruedIncomeTaxesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedInsuranceCurrent" xlink:label="us-gaap_AccruedInsuranceCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedInsuranceCurrent_lbl" xml:lang="en-US" id="id_22026_442826_1_1">Accrued Insurance Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedInsuranceCurrent_lbl" xml:lang="en-US" id="id_22026_442826_2_1">Insurance, other than workers' compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedInsuranceCurrent" xlink:to="us-gaap_AccruedInsuranceCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_444341_1_1">Accrued Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_444341_2_1">Accrued expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_444341_6_1">Accrued expenses</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent_lbl" xml:lang="en-US" id="id_22026_478841_3_1">Accrued Salaries, Wages, Payroll Taxes and Benefits, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent_lbl" xml:lang="en-US" id="id_22026_478841_1_1">Accrued Salaries Wages Payroll Taxes And Benefits Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent_lbl" xml:lang="en-US" id="id_22026_478841_2_1">Salaries, wages, payroll taxes and benefits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent" xlink:to="pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_451990_1_1">Accumulated Depreciation Depletion And Amortization Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_451990_8_1">Less accumulated depreciation and depletion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US" id="id_22026_442171_1_1">Accumulated Other Comprehensive Income Loss Net Of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US" id="id_22026_442171_2_1">Accumulated other comprehensive income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" id="id_22026_443982_1_1">Accumulated Other Comprehensive Income [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" id="id_22026_443982_2_1">Accumulated Other Comprehensive Income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xml:lang="en-US" id="id_22026_454115_1_1">Acquired Finite Lived Intangible Assets By Major Class [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xml:lang="en-US" id="id_22026_454115_2_1">Acquired Finite-Lived Intangible Assets by Major Class [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_AcquiredFiniteLivedIntangibleAssetsByMajorClassAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xml:lang="en-US" id="id_22026_441618_1_1">Acquired Finite Lived Intangible Assets [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xml:lang="en-US" id="id_22026_441618_2_1">Acquired Finite-Lived Intangible Assets [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_22026_450188_1_1">Additional Paid In Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_22026_450188_2_1">Additional paid-in capital</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_22026_453698_1_1">Additional Paid In Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_22026_453698_2_1">Additional Paid-in Capital</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares" xlink:label="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares_lbl" xml:lang="en-US" id="id_22026_461841_3_1">Adjusted income loss from continuing operations available to common shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares_lbl" xml:lang="en-US" id="id_22026_461841_1_1">Adjusted Income Loss From Continuing Operations Available To Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares_lbl" xml:lang="en-US" id="id_22026_461841_6_1">Adjusted income from continuing operations attributed to common stockholders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares" xlink:to="pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax" xlink:label="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax_lbl" xml:lang="en-US" id="id_22026_463794_3_1">Adjusted Income Loss From Discontinued Operations Available To Common Shares Net Of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax_lbl" xml:lang="en-US" id="id_22026_463794_1_1">Adjusted Income Loss From Discontinued Operations Available To Common Shares Net Of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax_lbl" xml:lang="en-US" id="id_22026_463794_6_1">Loss from discontinued operations attributed to common stockholders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax" xlink:to="pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" id="id_22026_441073_1_1">Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" id="id_22026_441073_2_1">Stock-based compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_456429_1_1">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_456429_2_1">Adjustments to reconcile net income to net cash provided by operating activities:</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet" xlink:label="us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet_lbl" xml:lang="en-US" id="id_22026_452395_1_1">Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet_lbl" xml:lang="en-US" id="id_22026_452395_2_1">Tax expense/benefit related to stock-based compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet" xlink:to="us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_AdvancesToNonAffiliates" xlink:label="pten_AdvancesToNonAffiliates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_AdvancesToNonAffiliates_lbl" xml:lang="en-US" id="id_22026_493851_3_1">Advances to Non Affiliates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_AdvancesToNonAffiliates_lbl" xml:lang="en-US" id="id_22026_493851_1_1">Advances To Non Affiliates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_AdvancesToNonAffiliates_lbl" xml:lang="en-US" id="id_22026_493851_2_1">Advance to non-affiliates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_AdvancesToNonAffiliates" xlink:to="pten_AdvancesToNonAffiliates_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_22026_449291_1_1">Allocated Share Based Compensation Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_22026_449291_2_1">Compensation expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="id_22026_450809_1_1">Allowance For Doubtful Accounts Receivable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="id_22026_450809_2_1">Accounts receivable, allowance for doubtful accounts</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_22026_440685_1_1">Amendment Flag</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_22026_440685_2_1">Amendment Flag</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="us-gaap_AmortizationOfFinancingCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_22026_455678_1_1">Amortization Of Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_22026_455678_2_1">Interest expense related to amortization of debt issuance costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCosts" xlink:to="us-gaap_AmortizationOfFinancingCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US" id="id_22026_451160_1_1">Amortization Of Intangible Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US" id="id_22026_451160_2_1">Amortization expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="id_22026_449322_1_1">Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="id_22026_449322_2_1">Potentially dilutive securities excluded as anti-dilutive</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ApplicableMarginRate" xlink:label="pten_ApplicableMarginRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ApplicableMarginRate_lbl" xml:lang="en-US" id="id_22026_474231_3_1">Applicable Margin Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ApplicableMarginRate_lbl" xml:lang="en-US" id="id_22026_474231_1_1">Applicable Margin Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ApplicableMarginRate_lbl" xml:lang="en-US" id="id_22026_474231_2_1">Applicable margin</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="us-gaap_AssetRetirementObligation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligation_lbl" xml:lang="en-US" id="id_22026_454568_1_1">Asset Retirement Obligation</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_AssetRetirementObligation_lbl" xml:lang="en-US" id="id_22026_454568_5_1">Balance at beginning of year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligation" xlink:to="us-gaap_AssetRetirementObligation_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_AssetRetirementObligationAccretionExpenseAccrued" xlink:label="pten_AssetRetirementObligationAccretionExpenseAccrued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_AssetRetirementObligationAccretionExpenseAccrued_lbl" xml:lang="en-US" id="id_22026_477335_3_1">Asset Retirement Obligation, Accretion Expense Accrued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_AssetRetirementObligationAccretionExpenseAccrued_lbl" xml:lang="en-US" id="id_22026_477335_1_1">Asset Retirement Obligation Accretion Expense Accrued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_AssetRetirementObligationAccretionExpenseAccrued_lbl" xml:lang="en-US" id="id_22026_477335_2_1">Accretion expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_AssetRetirementObligationAccretionExpenseAccrued" xlink:to="pten_AssetRetirementObligationAccretionExpenseAccrued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetRetirementObligationDisclosureTextBlock" xlink:label="us-gaap_AssetRetirementObligationDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligationDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_443903_1_1">Asset Retirement Obligation Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetRetirementObligationDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_443903_2_1">Asset Retirement Obligation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationDisclosureTextBlock" xlink:to="us-gaap_AssetRetirementObligationDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetRetirementObligationLiabilitiesIncurred" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl" xml:lang="en-US" id="id_22026_455796_1_1">Asset Retirement Obligation Liabilities Incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl" xml:lang="en-US" id="id_22026_455796_2_1">Liabilities incurred</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationLiabilitiesIncurred" xlink:to="us-gaap_AssetRetirementObligationLiabilitiesIncurred_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetRetirementObligationLiabilitiesSettled" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesSettled"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesSettled_lbl" xml:lang="en-US" id="id_22026_444500_1_1">Asset Retirement Obligation Liabilities Settled</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_AssetRetirementObligationLiabilitiesSettled_lbl" xml:lang="en-US" id="id_22026_444500_8_1">Liabilities settled</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationLiabilitiesSettled" xlink:to="us-gaap_AssetRetirementObligationLiabilitiesSettled_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetRetirementObligationRevisionOfEstimate" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl" xml:lang="en-US" id="id_22026_451356_1_1">Asset Retirement Obligation Revision Of Estimate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl" xml:lang="en-US" id="id_22026_451356_2_1">Revision in estimated costs of plugging oil and natural gas wells</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligationRevisionOfEstimate" xlink:to="us-gaap_AssetRetirementObligationRevisionOfEstimate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_22026_445113_1_1">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_22026_445113_2_1">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_22026_445113_6_1">Total assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_22026_450333_1_1">Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_22026_450333_2_1">ASSETS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_22026_447705_1_1">Assets Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_22026_447705_6_1">Total current assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="us-gaap_AssetsCurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_22026_448471_1_1">Assets Current [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_22026_448471_2_1">Current assets:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_BaseRateMember" xlink:label="pten_BaseRateMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_BaseRateMember_lbl" xml:lang="en-US" id="id_22026_478341_3_1">Base Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_BaseRateMember_lbl" xml:lang="en-US" id="id_22026_478341_1_1">Base Rate [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_BaseRateMember_lbl" xml:lang="en-US" id="id_22026_478341_2_1">Base Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_BaseRateMember" xlink:to="pten_BaseRateMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="us-gaap_BuildingsAndImprovementsGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BuildingsAndImprovementsGross_lbl" xml:lang="en-US" id="id_22026_442314_1_1">Buildings And Improvements Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BuildingsAndImprovementsGross_lbl" xml:lang="en-US" id="id_22026_442314_2_1">Buildings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingsAndImprovementsGross" xlink:to="us-gaap_BuildingsAndImprovementsGross_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_22026_454631_1_1">Business Acquisition Acquiree [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_22026_454631_2_1">Business Acquisition, Acquiree [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_22026_452537_1_1">Business Acquisition [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_22026_452537_2_1">Business Acquisition [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xml:lang="en-US" id="id_22026_452818_1_1">Carrying Reported Amount Fair Value Disclosure [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xml:lang="en-US" id="id_22026_452818_2_1">Carrying (Reported) Amount, Fair Value Disclosure</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:to="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock" xlink:label="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_475890_3_1">Carrying Value and Fair Value of Financial Instruments Disclosure</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_475890_1_1">Carrying Value And Fair Value Of Financial Instruments Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_475890_2_1">Estimated Fair Value of Outstanding Debt Balances</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock" xlink:to="pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_22026_449216_1_1">Cash And Cash Equivalents At Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_22026_449216_4_1">Cash and cash equivalents at end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_22026_449216_5_1">Cash and cash equivalents at beginning of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_22026_449216_2_1">Cash and cash equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_452867_1_1">Cash And Cash Equivalents Period Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_452867_6_1">Net increase (decrease) in cash and cash equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_22026_448139_1_1">Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_22026_448139_2_1">Supplemental investing and financing information:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CashPaidRefundedDuringPeriodForAbstract" xlink:label="pten_CashPaidRefundedDuringPeriodForAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CashPaidRefundedDuringPeriodForAbstract_lbl" xml:lang="en-US" id="id_22026_457320_3_1">Cash Paid Refunded During Period For [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CashPaidRefundedDuringPeriodForAbstract_lbl" xml:lang="en-US" id="id_22026_457320_1_1">Cash Paid Refunded During Period For [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CashPaidRefundedDuringPeriodForAbstract_lbl" xml:lang="en-US" id="id_22026_457320_2_1">Net cash paid during the period for:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CashPaidRefundedDuringPeriodForAbstract" xlink:to="pten_CashPaidRefundedDuringPeriodForAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US" id="id_22026_441091_1_1">Cash Provided By Used In Investing Activities Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US" id="id_22026_441091_2_1">Net cash provided by investing activities of discontinued operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:label="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US" id="id_22026_453894_1_1">Cash Provided By Used In Operating Activities Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US" id="id_22026_453894_2_1">Net cash used in operating activities of discontinued operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CertainCircumstancesMember" xlink:label="pten_CertainCircumstancesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CertainCircumstancesMember_lbl" xml:lang="en-US" id="id_22026_487313_3_1">Certain Circumstances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CertainCircumstancesMember_lbl" xml:lang="en-US" id="id_22026_487313_1_1">Certain Circumstances [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CertainCircumstancesMember_lbl" xml:lang="en-US" id="id_22026_487313_2_1">Certain Circumstances</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CertainCircumstancesMember" xlink:to="pten_CertainCircumstancesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_22026_446374_1_1">Commitments And Contingencies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_22026_446374_2_1">Commitments and contingencies (see Note 11)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CommitmentsAndContingenciesDisclosureLineItems" xlink:label="pten_CommitmentsAndContingenciesDisclosureLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CommitmentsAndContingenciesDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457477_3_1">Commitments and Contingencies Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CommitmentsAndContingenciesDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457477_1_1">Commitments And Contingencies Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CommitmentsAndContingenciesDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457477_2_1">Commitments and Contingencies Disclosure [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CommitmentsAndContingenciesDisclosureLineItems" xlink:to="pten_CommitmentsAndContingenciesDisclosureLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CommitmentsAndContingenciesDisclosureTable" xlink:label="pten_CommitmentsAndContingenciesDisclosureTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CommitmentsAndContingenciesDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476407_3_1">Commitments and Contingencies Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CommitmentsAndContingenciesDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476407_1_1">Commitments And Contingencies Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CommitmentsAndContingenciesDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476407_2_1">Commitments and Contingencies Disclosure [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CommitmentsAndContingenciesDisclosureTable" xlink:to="pten_CommitmentsAndContingenciesDisclosureTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_443397_1_1">Commitments And Contingencies Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_443397_2_1">Commitments, Contingencies and Other Matters</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xml:lang="en-US" id="id_22026_446601_1_1">Common Stock Dividends Per Share Cash Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xml:lang="en-US" id="id_22026_446601_2_1">Cash dividends paid, per share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareCashPaid" xlink:to="us-gaap_CommonStockDividendsPerShareCashPaid_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xml:lang="en-US" id="id_22026_450633_1_1">Common Stock Dividends Per Share Declared</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xml:lang="en-US" id="id_22026_450633_2_1">Dividend per share, declared</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareDeclared" xlink:to="us-gaap_CommonStockDividendsPerShareDeclared_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CommonStockDividendsPerShareDeclaredAndPaid" xlink:label="pten_CommonStockDividendsPerShareDeclaredAndPaid"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CommonStockDividendsPerShareDeclaredAndPaid_lbl" xml:lang="en-US" id="id_22026_473870_3_1">Per share dividends declared and paid during the period for each share of common stock outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CommonStockDividendsPerShareDeclaredAndPaid_lbl" xml:lang="en-US" id="id_22026_473870_1_1">Common Stock Dividends Per Share Declared And Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CommonStockDividendsPerShareDeclaredAndPaid_lbl" xml:lang="en-US" id="id_22026_473870_2_1">Cash dividends per common share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CommonStockDividendsPerShareDeclaredAndPaid" xlink:to="pten_CommonStockDividendsPerShareDeclaredAndPaid_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_22026_444581_1_1">Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_22026_444581_2_1">Common Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_22026_449974_1_1">Common Stock Par Or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_22026_449974_2_1">Common stock, par value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_22026_454829_1_1">Common Stock Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_22026_454829_2_1">Common stock, authorized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_453540_1_1">Common Stock Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_453540_4_1">Balance (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_453540_5_1">Balance (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_453540_2_1">Common stock, issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_22026_447408_1_1">Common Stock Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_22026_447408_2_1">Common stock, outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_22026_445860_1_1">Common Stock Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_22026_445860_2_1">Common stock, par value $.01; authorized 300,000,000 shares with 183,315,514 and 183,295,350 issued and 155,827,260 and 155,807,779 outstanding at March 31, 2012 and December 31, 2011, respectively</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457508_3_1">Compensation Related Costs Share Based Payments Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457508_1_1">Compensation Related Costs Share Based Payments Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457508_2_1">Compensation Related Costs Share Based Payments Disclosure [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476438_3_1">Compensation Related Costs Share Based Payments Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476438_1_1">Compensation Related Costs Share Based Payments Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476438_2_1">Compensation Related Costs Share Based Payments Disclosure [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="pten_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xml:lang="en-US" id="id_22026_444249_1_1">Comprehensive Income Net Of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xml:lang="en-US" id="id_22026_444249_6_1">Total comprehensive income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ContractDrillingExpenses" xlink:label="pten_ContractDrillingExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ContractDrillingExpenses_lbl" xml:lang="en-US" id="id_22026_458058_3_1">Costs incurred in providing contract drilling services and survey and related maintenance costs, contract preparation and mobilization costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ContractDrillingExpenses_lbl" xml:lang="en-US" id="id_22026_458058_1_1">Contract Drilling Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ContractDrillingExpenses_lbl" xml:lang="en-US" id="id_22026_458058_2_1">Contract drilling</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ContractDrillingExpenses" xlink:to="pten_ContractDrillingExpenses_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ContractDrillingMember" xlink:label="pten_ContractDrillingMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ContractDrillingMember_lbl" xml:lang="en-US" id="id_22026_478838_3_1">Contract Drilling</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ContractDrillingMember_lbl" xml:lang="en-US" id="id_22026_478838_1_1">Contract Drilling [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ContractDrillingMember_lbl" xml:lang="en-US" id="id_22026_478838_2_1">Contract Drilling</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ContractDrillingMember" xlink:to="pten_ContractDrillingMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ContractTerm" xlink:label="pten_ContractTerm"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ContractTerm_lbl" xml:lang="en-US" id="id_22026_474137_3_1">Contract Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ContractTerm_lbl" xml:lang="en-US" id="id_22026_474137_1_1">Contract Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ContractTerm_lbl" xml:lang="en-US" id="id_22026_474137_2_1">Contract term</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ContractTerm" xlink:to="pten_ContractTerm_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="us-gaap_CostsAndExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US" id="id_22026_443760_1_1">Costs And Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US" id="id_22026_443760_6_1">Total operating costs and expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_CreditFacility2010Member" xlink:label="pten_CreditFacility2010Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_CreditFacility2010Member_lbl" xml:lang="en-US" id="id_22026_491056_3_1">Credit Facility 2010</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_CreditFacility2010Member_lbl" xml:lang="en-US" id="id_22026_491056_1_1">Credit Facility 2010 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_CreditFacility2010Member_lbl" xml:lang="en-US" id="id_22026_491056_2_1">2010 Credit Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_CreditFacility2010Member" xlink:to="pten_CreditFacility2010Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_22026_440743_1_1">Current Fiscal Year End Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_22026_440743_2_1">Current Fiscal Year End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_22026_453849_1_1">Current Income Tax Expense Benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_22026_453849_2_1">Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="us-gaap_CustomerRelationshipsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xml:lang="en-US" id="id_22026_450059_1_1">Customer Relationships [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xml:lang="en-US" id="id_22026_450059_2_1">Customer relationships</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerRelationshipsMember" xlink:to="us-gaap_CustomerRelationshipsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtDisclosureLineItems" xlink:label="pten_DebtDisclosureLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457512_3_1">Debt Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457512_1_1">Debt Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457512_2_1">Debt Disclosure [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtDisclosureLineItems" xlink:to="pten_DebtDisclosureLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtDisclosureTable" xlink:label="pten_DebtDisclosureTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476417_3_1">Debt Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476417_1_1">Debt Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476417_2_1">Debt Disclosure [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtDisclosureTable" xlink:to="pten_DebtDisclosureTable_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtInstrumentAcceptanceTerms" xlink:label="pten_DebtInstrumentAcceptanceTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtInstrumentAcceptanceTerms_lbl" xml:lang="en-US" id="id_22026_478844_3_1">Debt Instrument, Acceptance Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtInstrumentAcceptanceTerms_lbl" xml:lang="en-US" id="id_22026_478844_1_1">Debt Instrument Acceptance Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtInstrumentAcceptanceTerms_lbl" xml:lang="en-US" id="id_22026_478844_2_1">Description of the acceptance terms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtInstrumentAcceptanceTerms" xlink:to="pten_DebtInstrumentAcceptanceTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_22026_454689_1_1">Debt Instrument [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_22026_454689_2_1">Debt Instrument [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentCovenantDescription" xlink:label="us-gaap_DebtInstrumentCovenantDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCovenantDescription_lbl" xml:lang="en-US" id="id_22026_454951_1_1">Debt Instrument Covenant Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCovenantDescription_lbl" xml:lang="en-US" id="id_22026_454951_2_1">Financial covenant description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCovenantDescription" xlink:to="us-gaap_DebtInstrumentCovenantDescription_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentDateOfFirstRequiredPayment" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment_lbl" xml:lang="en-US" id="id_22026_456003_1_1">Debt Instrument Date Of First Required Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentDateOfFirstRequiredPayment_lbl" xml:lang="en-US" id="id_22026_456003_2_1">Commencement date of principal payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentDateOfFirstRequiredPayment" xlink:to="us-gaap_DebtInstrumentDateOfFirstRequiredPayment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_22026_452775_1_1">Debt Instrument Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_22026_452775_2_1">Long-term debt, aggregate principal amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="us-gaap_DebtInstrumentFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US" id="id_22026_450917_1_1">Debt Instrument Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US" id="id_22026_450917_2_1">Fair value of Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US" id="id_22026_450917_12_1">Long-term debt, fair value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtInstrumentInterestRatePaymentDate" xlink:label="pten_DebtInstrumentInterestRatePaymentDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtInstrumentInterestRatePaymentDate_lbl" xml:lang="en-US" id="id_22026_467011_3_1">Debt Instrument, Interest Rate, Payment Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtInstrumentInterestRatePaymentDate_lbl" xml:lang="en-US" id="id_22026_467011_1_1">Debt Instrument Interest Rate Payment Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtInstrumentInterestRatePaymentDate_lbl" xml:lang="en-US" id="id_22026_467011_2_1">Interest pay date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtInstrumentInterestRatePaymentDate" xlink:to="pten_DebtInstrumentInterestRatePaymentDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_22026_442772_1_1">Debt Instrument Interest Rate Stated Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_22026_442772_2_1">Debt interest rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentIssuanceDate" xlink:label="us-gaap_DebtInstrumentIssuanceDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentIssuanceDate_lbl" xml:lang="en-US" id="id_22026_442955_1_1">Debt Instrument Issuance Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentIssuanceDate_lbl" xml:lang="en-US" id="id_22026_442955_2_1">Notes issuance date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentIssuanceDate" xlink:to="us-gaap_DebtInstrumentIssuanceDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_22026_454507_1_1">Debt Instrument Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_22026_454507_2_1">Debt maturity date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" id="id_22026_451948_1_1">Debt Instrument Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" id="id_22026_451948_2_1">Debt Instrument, Name [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtInstrumentPrepaymentTerms" xlink:label="pten_DebtInstrumentPrepaymentTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtInstrumentPrepaymentTerms_lbl" xml:lang="en-US" id="id_22026_478843_3_1">Debt Instrument, Prepayment Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtInstrumentPrepaymentTerms_lbl" xml:lang="en-US" id="id_22026_478843_1_1">Debt Instrument Prepayment Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtInstrumentPrepaymentTerms_lbl" xml:lang="en-US" id="id_22026_478843_2_1">Description of the prepayment terms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtInstrumentPrepaymentTerms" xlink:to="pten_DebtInstrumentPrepaymentTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtRedemptionPricePercentOfPrincipalAmount" xlink:label="pten_DebtRedemptionPricePercentOfPrincipalAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtRedemptionPricePercentOfPrincipalAmount_lbl" xml:lang="en-US" id="id_22026_474707_3_1">Debt Redemption Price Percent Of Principal Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtRedemptionPricePercentOfPrincipalAmount_lbl" xml:lang="en-US" id="id_22026_474707_1_1">Debt Redemption Price Percent Of Principal Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtRedemptionPricePercentOfPrincipalAmount_lbl" xml:lang="en-US" id="id_22026_474707_2_1">Prepayment terms, percent of principal before accrued and unpaid interest and "make-whole" premium</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtRedemptionPricePercentOfPrincipalAmount" xlink:to="pten_DebtRedemptionPricePercentOfPrincipalAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DebtToCapitalizationRatio" xlink:label="pten_DebtToCapitalizationRatio"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DebtToCapitalizationRatio_lbl" xml:lang="en-US" id="id_22026_474343_3_1">Debt To Capitalization Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DebtToCapitalizationRatio_lbl" xml:lang="en-US" id="id_22026_474343_1_1">Debt To Capitalization Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DebtToCapitalizationRatio_lbl" xml:lang="en-US" id="id_22026_474343_2_1">Debt to capitalization ratio, percentage the Company must not exceed at any time</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DebtToCapitalizationRatio" xlink:to="pten_DebtToCapitalizationRatio_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_22026_447065_1_1">Deferred Income Tax Expense Benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_22026_447065_2_1">Deferred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_22026_447065_12_1">Deferred income tax expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiability_lbl" xml:lang="en-US" id="id_22026_441781_2_1">Deferred tax liabilities that have not been provided on such unremitted foreign earnings for United States Federal or state income taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiability" xlink:to="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiability_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DepositsOnEquipmentPurchases" xlink:label="pten_DepositsOnEquipmentPurchases"/>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DepreciationDepletionAmortizationAndImpairment" xlink:label="pten_DepreciationDepletionAmortizationAndImpairment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DepreciationDepletionAmortizationAndImpairment_lbl" xml:lang="en-US" id="id_22026_486811_3_1">Depreciation, Depletion, Amortization and Impairment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DepreciationDepletionAmortizationAndImpairment_lbl" xml:lang="en-US" id="id_22026_486811_1_1">Depreciation Depletion Amortization And Impairment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DepreciationDepletionAmortizationAndImpairment_lbl" xml:lang="en-US" id="id_22026_486811_2_1">Depreciation, depletion, amortization and impairment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DepreciationDepletionAmortizationAndImpairment" xlink:to="pten_DepreciationDepletionAmortizationAndImpairment_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureAccruedExpensesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544222_3_1">Disclosure - Accrued Expenses - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureAccruedExpensesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544222_1_1">Disclosure Accrued Expenses Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureAccruedExpensesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544222_2_1">Disclosure - Accrued Expenses - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureAccruedExpensesAdditionalInformationAbstract" xlink:to="pten_DisclosureAccruedExpensesAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureBusinessSegmentsAdditionalInformationAbstract" xlink:label="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544223_3_1">Disclosure - Business Segments - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544223_1_1">Disclosure Business Segments Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544223_2_1">Disclosure - Business Segments - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract" xlink:to="pten_DisclosureBusinessSegmentsAdditionalInformationAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureBusinessSegmentsAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544224_3_1">Disclosure - Business Segments - Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureBusinessSegmentsAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544224_1_1">Disclosure Business Segments Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureBusinessSegmentsAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544224_2_1">Disclosure - Business Segments - Assets [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureBusinessSegmentsAssetsAbstract" xlink:to="pten_DisclosureBusinessSegmentsAssetsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract" xlink:label="pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract_lbl" xml:lang="en-US" id="id_22026_544225_3_1">Disclosure - Business Segments - Income (loss) from Continuing Operations Before Income Taxes [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract_lbl" xml:lang="en-US" id="id_22026_544225_1_1">Disclosure Business Segments Incomeloss From Continuing Operations Before Income Taxes [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureBusinessSegmentsIncomelossFromContinuingOperationsBeforeIncomeTaxesAbstract_lbl" xml:lang="en-US" id="id_22026_544225_2_1">Disclosure - Business Segments - Income (loss) from Continuing Operations Before Income Taxes [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureBusinessSegmentsRevenuesAbstract_lbl" xml:lang="en-US" id="id_22026_544226_2_1">Disclosure - Business Segments - Revenues [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureBusinessSegmentsRevenuesAbstract" xlink:to="pten_DisclosureBusinessSegmentsRevenuesAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureCalculationOfIncomeLossPerShareFromContinuingAndDiscontinuedOperationsAbstract_lbl" xml:lang="en-US" id="id_22026_544227_1_1">Disclosure Calculation Of Income Loss Per Share From Continuing And Discontinued Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureCalculationOfIncomeLossPerShareFromContinuingAndDiscontinuedOperationsAbstract_lbl" xml:lang="en-US" id="id_22026_544227_2_1">Disclosure - Calculation of Income (Loss) Per Share From Continuing and Discontinued Operations [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureCashDividendsAbstract" xlink:label="pten_DisclosureCashDividendsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureCashDividendsAbstract_lbl" xml:lang="en-US" id="id_22026_544228_3_1">Disclosure - Cash Dividends [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureCashDividendsAbstract_lbl" xml:lang="en-US" id="id_22026_544228_1_1">Disclosure Cash Dividends [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureCashDividendsAbstract_lbl" xml:lang="en-US" id="id_22026_544228_2_1">Disclosure - Cash Dividends [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureCashDividendsAbstract" xlink:to="pten_DisclosureCashDividendsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract" xlink:label="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract_lbl" xml:lang="en-US" id="id_22026_544229_3_1">Disclosure - Changes to Company's Asset Retirement Obligations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract_lbl" xml:lang="en-US" id="id_22026_544229_1_1">Disclosure Changes To Companys Asset Retirement Obligations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract_lbl" xml:lang="en-US" id="id_22026_544229_2_1">Disclosure - Changes to Company's Asset Retirement Obligations [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract" xlink:to="pten_DisclosureChangesToCompanysAssetRetirementObligationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract" xlink:label="pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544230_3_1">Disclosure - Commitments, Contingencies and Other Matters - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544230_1_1">Disclosure Commitments Contingencies And Other Matters Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureCommitmentsContingenciesAndOtherMattersAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544230_2_1">Disclosure - Commitments, Contingencies and Other Matters - Additional Information [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureDiscontinuedOperationsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544231_1_1">Disclosure Discontinued Operations Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureDiscontinuedOperationsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544231_2_1">Disclosure - Discontinued Operations - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureDiscontinuedOperationsAdditionalInformationAbstract" xlink:to="pten_DisclosureDiscontinuedOperationsAdditionalInformationAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureEstimatedFairValueOfOutstandingDebtBalancesAbstract_lbl" xml:lang="en-US" id="id_22026_544232_3_1">Disclosure - Estimated Fair Value of Outstanding Debt Balances [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureEstimatedFairValueOfOutstandingDebtBalancesAbstract_lbl" xml:lang="en-US" id="id_22026_544232_1_1">Disclosure Estimated Fair Value Of Outstanding Debt Balances [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureEstimatedFairValueOfOutstandingDebtBalancesAbstract_lbl" xml:lang="en-US" id="id_22026_544232_2_1">Disclosure - Estimated Fair Value of Outstanding Debt Balances [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544233_1_1">Disclosure Fair Values Of Financial Instruments Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544233_2_1">Disclosure - Fair Values of Financial Instruments - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract" xlink:to="pten_DisclosureFairValuesOfFinancialInstrumentsAdditionalInformationAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544234_1_1">Disclosure Goodwill And Intangible Assets Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544234_2_1">Disclosure - Goodwill and Intangible Assets - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract" xlink:to="pten_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureGoodwillByOperatingSegmentAbstract_lbl" xml:lang="en-US" id="id_22026_544235_1_1">Disclosure Goodwill By Operating Segment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureGoodwillByOperatingSegmentAbstract_lbl" xml:lang="en-US" id="id_22026_544235_2_1">Disclosure - Goodwill by Operating Segment [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureGoodwillByOperatingSegmentAbstract" xlink:to="pten_DisclosureGoodwillByOperatingSegmentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract" xlink:label="pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544236_3_1">Disclosure - Gross Carrying Amount and Accumulated Amortization of Intangible Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544236_1_1">Disclosure Gross Carrying Amount And Accumulated Amortization Of Intangible Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureGrossCarryingAmountAndAccumulatedAmortizationOfIntangibleAssetsAbstract_lbl" xml:lang="en-US" id="id_22026_544236_2_1">Disclosure - Gross Carrying Amount and Accumulated Amortization of Intangible Assets [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureIncomeTaxesAdditionalInformationAbstract" xlink:label="pten_DisclosureIncomeTaxesAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureIncomeTaxesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544237_3_1">Disclosure - Income Taxes - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureIncomeTaxesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544237_1_1">Disclosure Income Taxes Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureIncomeTaxesAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544237_2_1">Disclosure - Income Taxes - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureIncomeTaxesAdditionalInformationAbstract" xlink:to="pten_DisclosureIncomeTaxesAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureLongTermDebtAdditionalInformationAbstract" xlink:label="pten_DisclosureLongTermDebtAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureLongTermDebtAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544238_3_1">Disclosure - Long Term Debt - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureLongTermDebtAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544238_1_1">Disclosure Long Term Debt Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureLongTermDebtAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544238_2_1">Disclosure - Long Term Debt - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureLongTermDebtAdditionalInformationAbstract" xlink:to="pten_DisclosureLongTermDebtAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xml:lang="en-US" id="id_22026_454501_2_1">Stock-based Compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosurePropertyAndEquipmentAbstract_lbl" xml:lang="en-US" id="id_22026_544239_3_1">Disclosure - Property and Equipment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosurePropertyAndEquipmentAbstract_lbl" xml:lang="en-US" id="id_22026_544239_1_1">Disclosure Property And Equipment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosurePropertyAndEquipmentAbstract_lbl" xml:lang="en-US" id="id_22026_544239_2_1">Disclosure - Property and Equipment [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosurePropertyAndEquipmentAbstract" xlink:to="pten_DisclosurePropertyAndEquipmentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureRestrictedStockActivityAbstract" xlink:label="pten_DisclosureRestrictedStockActivityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureRestrictedStockActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544240_3_1">Disclosure - Restricted Stock Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureRestrictedStockActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544240_1_1">Disclosure Restricted Stock Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureRestrictedStockActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544240_2_1">Disclosure - Restricted Stock Activity [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureRestrictedStockActivityAbstract" xlink:to="pten_DisclosureRestrictedStockActivityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureRestrictedStockUnitActivityAbstract" xlink:label="pten_DisclosureRestrictedStockUnitActivityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureRestrictedStockUnitActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544241_3_1">Disclosure - Restricted Stock Unit Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureRestrictedStockUnitActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544241_1_1">Disclosure Restricted Stock Unit Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureRestrictedStockUnitActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544241_2_1">Disclosure - Restricted Stock Unit Activity [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureRestrictedStockUnitActivityAbstract" xlink:to="pten_DisclosureRestrictedStockUnitActivityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureScheduleOfPrincipalRepaymentRequirementsOfLongTermDebtAbstract" xlink:label="pten_DisclosureScheduleOfPrincipalRepaymentRequirementsOfLongTermDebtAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureScheduleOfPrincipalRepaymentRequirementsOfLongTermDebtAbstract_lbl" xml:lang="en-US" id="id_22026_544242_3_1">Disclosure - Schedule of Principal Repayment Requirements of Long Term Debt [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureStockbasedCompensationAdditionalInformationAbstract" xlink:label="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544243_3_1">Disclosure - Stock-based Compensation - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544243_1_1">Disclosure Stockbased Compensation Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544243_2_1">Disclosure - Stock-based Compensation - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract" xlink:to="pten_DisclosureStockbasedCompensationAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureStockholdersEquityAdditionalInformationAbstract" xlink:label="pten_DisclosureStockholdersEquityAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureStockholdersEquityAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544244_3_1">Disclosure - Stockholders' Equity - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureStockholdersEquityAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544244_1_1">Disclosure Stockholders Equity Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureStockholdersEquityAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544244_2_1">Disclosure - Stockholders' Equity - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureStockholdersEquityAdditionalInformationAbstract" xlink:to="pten_DisclosureStockholdersEquityAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureStockOptionActivityAbstract" xlink:label="pten_DisclosureStockOptionActivityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureStockOptionActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544245_3_1">Disclosure - Stock Option Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureStockOptionActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544245_1_1">Disclosure Stock Option Activity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureStockOptionActivityAbstract_lbl" xml:lang="en-US" id="id_22026_544245_2_1">Disclosure - Stock Option Activity [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureStockOptionActivityAbstract" xlink:to="pten_DisclosureStockOptionActivityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureSubsequentEventAdditionalInformationAbstract" xlink:label="pten_DisclosureSubsequentEventAdditionalInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureSubsequentEventAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544246_3_1">Disclosure - Subsequent Event - Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureSubsequentEventAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544246_1_1">Disclosure Subsequent Event Additional Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureSubsequentEventAdditionalInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544246_2_1">Disclosure - Subsequent Event - Additional Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureSubsequentEventAdditionalInformationAbstract" xlink:to="pten_DisclosureSubsequentEventAdditionalInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureSummaryOfAccruedExpensesAbstract" xlink:label="pten_DisclosureSummaryOfAccruedExpensesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureSummaryOfAccruedExpensesAbstract_lbl" xml:lang="en-US" id="id_22026_544247_3_1">Disclosure - Summary of Accrued Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureSummaryOfAccruedExpensesAbstract_lbl" xml:lang="en-US" id="id_22026_544247_1_1">Disclosure Summary Of Accrued Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureSummaryOfAccruedExpensesAbstract_lbl" xml:lang="en-US" id="id_22026_544247_2_1">Disclosure - Summary of Accrued Expenses [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureSummaryOfAccruedExpensesAbstract" xlink:to="pten_DisclosureSummaryOfAccruedExpensesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract" xlink:label="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract_lbl" xml:lang="en-US" id="id_22026_544248_3_1">Disclosure - Summary of Operating Results from Discontinued Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract_lbl" xml:lang="en-US" id="id_22026_544248_1_1">Disclosure Summary Of Operating Results From Discontinued Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract_lbl" xml:lang="en-US" id="id_22026_544248_2_1">Disclosure - Summary of Operating Results from Discontinued Operations [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract" xlink:to="pten_DisclosureSummaryOfOperatingResultsFromDiscontinuedOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract" xlink:label="pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract_lbl" xml:lang="en-US" id="id_22026_544249_3_1">Disclosure - Weighted-Average Assumptions Used to Estimate Grant Date Fair Values for Stock Options Granted [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract_lbl" xml:lang="en-US" id="id_22026_544249_1_1">Disclosure Weighted Average Assumptions Used To Estimate Grant Date Fair Values For Stock Options Granted [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DisclosureWeightedAverageAssumptionsUsedToEstimateGrantDateFairValuesForStockOptionsGrantedAbstract_lbl" xml:lang="en-US" id="id_22026_544249_2_1">Disclosure - Weighted-Average Assumptions Used to Estimate Grant Date Fair Values for Stock Options Granted [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US" id="id_22026_441039_1_1">Discontinued Operation Income Loss From Discontinued Operation Before Income Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US" id="id_22026_441039_2_1">Loss before income taxes</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DividendActivityTextBlock_lbl" xml:lang="en-US" id="id_22026_476339_3_1">Dividend Activity</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendDeclaredMember_lbl" xml:lang="en-US" id="id_22026_442418_1_1">Dividend Declared [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendDeclaredMember_lbl" xml:lang="en-US" id="id_22026_442418_2_1">Dividend Declared</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_449484_1_1">Dividend Payable Date To Be Paid Day Month And Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_449484_2_1">Dividend payment date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:to="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DividendPaymentDateDayMonthAndYear" xlink:label="pten_DividendPaymentDateDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DividendPaymentDateDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_478846_3_1">Dividend Payment Date Day Month And Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DividendPaymentDateDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_478846_1_1">Dividend Payment Date Day Month And Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DividendPaymentDateDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_478846_2_1">Cash dividends paid, date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DividendPaymentDateDayMonthAndYear" xlink:to="pten_DividendPaymentDateDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:label="us-gaap_DividendsCommonStockCash"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xml:lang="en-US" id="id_22026_443914_1_1">Dividends Common Stock Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xml:lang="en-US" id="id_22026_443914_2_1">Cash dividends paid</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xml:lang="en-US" id="id_22026_443914_8_1">Payment of cash dividends</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStockCash" xlink:to="us-gaap_DividendsCommonStockCash_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPayableDateDeclaredDayMonthAndYear" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_450020_1_1">Dividends Payable Date Declared Day Month And Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_450020_2_1">Dividend declaration date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear" xlink:to="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_456487_1_1">Dividends Payable Date Of Record Day Month And Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xml:lang="en-US" id="id_22026_456487_2_1">Dividend record date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:to="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_DocumentDocumentandEntityInformationAbstract" xlink:label="pten_DocumentDocumentandEntityInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_DocumentDocumentandEntityInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544250_3_1">Document - Document and Entity Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_DocumentDocumentandEntityInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544250_1_1">Document Documentand Entity Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_DocumentDocumentandEntityInformationAbstract_lbl" xml:lang="en-US" id="id_22026_544250_2_1">Document - Document and Entity Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DocumentDocumentandEntityInformationAbstract" xlink:to="pten_DocumentDocumentandEntityInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_22026_440619_1_1">Document Fiscal Period Focus</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_22026_440619_2_1">Document Fiscal Period Focus</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_22026_440713_1_1">Document Fiscal Year Focus</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_22026_440713_2_1">Document Fiscal Year Focus</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentInformationLineItems" xlink:label="dei_DocumentInformationLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentInformationLineItems_lbl" xml:lang="en-US" id="id_22026_440663_1_1">Document Information [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentInformationLineItems_lbl" xml:lang="en-US" id="id_22026_440663_2_1">Document Information [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationLineItems" xlink:to="dei_DocumentInformationLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="id_22026_440728_1_1">Document Period End Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="id_22026_440728_2_1">Document Period End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentType" xlink:label="dei_DocumentType"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentType_lbl" xml:lang="en-US" id="id_22026_440723_1_1">Document Type</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentType_lbl" xml:lang="en-US" id="id_22026_440723_2_1">Document Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_22026_450944_1_1">Earnings Per Share Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_22026_450944_2_1">Basic net income per common share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_22026_450944_6_1">Net income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="us-gaap_EarningsPerShareBasicAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xml:lang="en-US" id="id_22026_446161_1_1">Earnings Per Share Basic [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xml:lang="en-US" id="id_22026_446161_2_1">BASIC EPS:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xml:lang="en-US" id="id_22026_446161_12_1">Basic income (loss) per common share:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAbstract" xlink:to="us-gaap_EarningsPerShareBasicAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_22026_445824_1_1">Earnings Per Share Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_22026_445824_2_1">Diluted net income per common share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_22026_445824_6_1">Net income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="us-gaap_EarningsPerShareDilutedAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US" id="id_22026_446069_1_1">Earnings Per Share Diluted [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US" id="id_22026_446069_2_1">DILUTED EPS:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US" id="id_22026_446069_12_1">Diluted income (loss) per common share:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDilutedAbstract" xlink:to="us-gaap_EarningsPerShareDilutedAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_22026_453204_1_1">Effect Of Exchange Rate On Cash And Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_22026_453204_2_1">Effect of foreign exchange rate changes on cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:to="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ElectricWirelineMember" xlink:label="pten_ElectricWirelineMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ElectricWirelineMember_lbl" xml:lang="en-US" id="id_22026_482504_3_1">Electric Wireline</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ElectricWirelineMember_lbl" xml:lang="en-US" id="id_22026_482504_1_1">Electric Wireline [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_EventTimingAxis_lbl" xml:lang="en-US" id="id_22026_483668_1_1">Event Timing [Axis]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_EventTimingDomain_lbl" xml:lang="en-US" id="id_22026_483686_3_1">Event Timing [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_EventTimingDomain_lbl" xml:lang="en-US" id="id_22026_483686_1_1">Event Timing [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_EventTimingDomain_lbl" xml:lang="en-US" id="id_22026_483686_2_1">Event Timing [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_EventTimingDomain" xlink:to="pten_EventTimingDomain_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ExplorationAbandonmentAndImpairmentExpense_lbl" xml:lang="en-US" id="id_22026_442811_2_1">Dry holes and abandonments</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xml:lang="en-US" id="id_22026_441967_1_1">Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xml:lang="en-US" id="id_22026_441967_2_1">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xml:lang="en-US" id="id_22026_446464_1_1">Fair Value By Balance Sheet Grouping [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xml:lang="en-US" id="id_22026_446464_2_1">Fair Value, by Balance Sheet Grouping [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByBalanceSheetGroupingTable" xlink:to="us-gaap_FairValueByBalanceSheetGroupingTable_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xml:lang="en-US" id="id_22026_441019_1_1">Fair Value By Measurement Basis [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xml:lang="en-US" id="id_22026_441019_2_1">Fair Value by Measurement Basis [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementBasisAxis" xlink:to="us-gaap_FairValueByMeasurementBasisAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xml:lang="en-US" id="id_22026_441774_2_1">Fair Value, Disclosure Item Amounts [Domain]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsUsefulLife" xlink:label="us-gaap_FiniteLivedIntangibleAssetsUsefulLife"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsUsefulLife_lbl" xml:lang="en-US" id="id_22026_451496_1_1">Finite Lived Intangible Assets Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsUsefulLife_lbl" xml:lang="en-US" id="id_22026_451496_2_1">Amortization period (in years)</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FixturesAndEquipmentGross" xlink:label="us-gaap_FixturesAndEquipmentGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FixturesAndEquipmentGross_lbl" xml:lang="en-US" id="id_22026_449524_1_1">Fixtures And Equipment Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FixturesAndEquipmentGross_lbl" xml:lang="en-US" id="id_22026_449524_2_1">Equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FixturesAndEquipmentGross" xlink:to="us-gaap_FixturesAndEquipmentGross_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="us-gaap_GainLossOnDispositionOfAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US" id="id_22026_444481_1_1">Gain Loss On Disposition Of Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US" id="id_22026_444481_2_1">Gain on disposal of assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets" xlink:to="us-gaap_GainLossOnDispositionOfAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US" id="id_22026_446620_1_1">Gain Loss On Sale Of Property Plant Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US" id="id_22026_446620_2_1">Net gain on asset disposals</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US" id="id_22026_446620_8_1">Net gain on asset disposals</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:to="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US" id="id_22026_447873_1_1">Goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US" id="id_22026_447873_4_1">Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US" id="id_22026_447873_5_1">Beginning Balance</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_GoodwillAndIntangibleAssetsDisclosureLineItems" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457480_3_1">Goodwill and Intangible Assets Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457480_1_1">Goodwill And Intangible Assets Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureLineItems_lbl" xml:lang="en-US" id="id_22026_457480_2_1">Goodwill and Intangible Assets Disclosure [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_GoodwillAndIntangibleAssetsDisclosureLineItems" xlink:to="pten_GoodwillAndIntangibleAssetsDisclosureLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_GoodwillAndIntangibleAssetsDisclosureTable" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476408_3_1">Goodwill and Intangible Assets Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476408_1_1">Goodwill And Intangible Assets Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_GoodwillAndIntangibleAssetsDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476408_2_1">Goodwill and Intangible Assets Disclosure [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_GoodwillAndIntangibleAssetsDisclosureTable" xlink:to="pten_GoodwillAndIntangibleAssetsDisclosureTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_451279_1_1">Goodwill And Intangible Assets Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_451279_2_1">Goodwill and Intangible Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:to="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_GoodwillAndIntangibleAssetsNet" xlink:label="pten_GoodwillAndIntangibleAssetsNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_GoodwillAndIntangibleAssetsNet_lbl" xml:lang="en-US" id="id_22026_459673_3_1">Sum of the carrying amounts of all goodwill and intangible assets of the balance sheet date, net of accumulated amortization and impairment charges.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_GoodwillAndIntangibleAssetsNet_lbl" xml:lang="en-US" id="id_22026_459673_1_1">Goodwill And Intangible Assets Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_GoodwillAndIntangibleAssetsNet_lbl" xml:lang="en-US" id="id_22026_459673_2_1">Goodwill and intangible assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_GoodwillAndIntangibleAssetsNet" xlink:to="pten_GoodwillAndIntangibleAssetsNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xml:lang="en-US" id="id_22026_451704_1_1">Goodwill Impaired Accumulated Impairment Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xml:lang="en-US" id="id_22026_451704_2_1">Goodwill impairment loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:to="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="us-gaap_GoodwillLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillLineItems_lbl" xml:lang="en-US" id="id_22026_442668_1_1">Goodwill [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GoodwillLineItems_lbl" xml:lang="en-US" id="id_22026_442668_2_1">Goodwill [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillLineItems" xlink:to="us-gaap_GoodwillLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillPeriodIncreaseDecrease" xlink:label="us-gaap_GoodwillPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_443495_1_1">Goodwill Period Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GoodwillPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_443495_2_1">Changes to goodwill</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillPeriodIncreaseDecrease" xlink:to="us-gaap_GoodwillPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_Group1Member" xlink:label="pten_Group1Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_Group1Member_lbl" xml:lang="en-US" id="id_22026_470122_3_1">Group 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_Group1Member_lbl" xml:lang="en-US" id="id_22026_470122_1_1">Group 1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_Group1Member_lbl" xml:lang="en-US" id="id_22026_470122_2_1">First Four Quarterly Installments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_Group1Member" xlink:to="pten_Group1Member_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_Group2Member" xlink:label="pten_Group2Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_Group2Member_lbl" xml:lang="en-US" id="id_22026_470123_3_1">Group 2</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_Group2Member_lbl" xml:lang="en-US" id="id_22026_470123_1_1">Group 2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_Group2Member_lbl" xml:lang="en-US" id="id_22026_470123_2_1">Subsequent Eight Quarterly Installments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_Group2Member" xlink:to="pten_Group2Member_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_Group3Member" xlink:label="pten_Group3Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_Group3Member_lbl" xml:lang="en-US" id="id_22026_470124_3_1">Group 3</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_Group3Member_lbl" xml:lang="en-US" id="id_22026_470124_1_1">Group 3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_Group3Member_lbl" xml:lang="en-US" id="id_22026_470124_2_1">Next Subsequent Three Quarterly Installments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_Group3Member" xlink:to="pten_Group3Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl" xml:lang="en-US" id="id_22026_455150_1_1">Impairment Of Long Lived Assets To Be Disposed Of</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl" xml:lang="en-US" id="id_22026_455150_2_1">Impairment of the assets to be disposed</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf" xlink:to="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:label="us-gaap_IncomeLossFromContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xml:lang="en-US" id="id_22026_443449_1_1">Income Loss From Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xml:lang="en-US" id="id_22026_443449_2_1">Income from continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xml:lang="en-US" id="id_22026_443449_6_1">Income from continuing operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperations" xlink:to="us-gaap_IncomeLossFromContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares" xlink:label="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares_lbl" xml:lang="en-US" id="id_22026_463792_3_1">Income Loss From Continuing Operations Allocable To Non Vested Restricted Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares_lbl" xml:lang="en-US" id="id_22026_463792_1_1">Income Loss From Continuing Operations Allocable To Non Vested Restricted Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares_lbl" xml:lang="en-US" id="id_22026_463792_2_1">Adjust for income attributed to holders of non-vested restricted stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares" xlink:to="pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders" xlink:label="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US" id="id_22026_461810_3_1">Income (Loss) from Continuing Operations Available to Common Shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US" id="id_22026_461810_1_1">Income Loss From Continuing Operations Available To Common Shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US" id="id_22026_461810_2_1">Income from continuing operations attributed to common stockholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US" id="id_22026_461810_6_1">Income from continuing operations attributed to common stockholders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders" xlink:to="pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US" id="id_22026_445103_1_1">Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US" id="id_22026_445103_2_1">Income from continuing operations before income taxes</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_IncreaseDecreaseInInventoryAndOtherAssets_lbl" xml:lang="en-US" id="id_22026_479033_3_1">Increase (Decrease) In Inventory and Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_IncreaseDecreaseInInventoryAndOtherAssets_lbl" xml:lang="en-US" id="id_22026_479033_1_1">Increase Decrease In Inventory And Other Assets</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="pten_IncreaseDecreaseInInventoryAndOtherAssets_lbl" xml:lang="en-US" id="id_22026_479033_8_1">Inventory and other assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_IncreaseDecreaseInInventoryAndOtherAssets" xlink:to="pten_IncreaseDecreaseInInventoryAndOtherAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_22026_449791_1_1">Increase Decrease In Operating Capital [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_22026_449791_2_1">Changes in operating assets and liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xml:lang="en-US" id="id_22026_441465_1_1">Increase Decrease In Other Operating Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xml:lang="en-US" id="id_22026_441465_2_1">Other liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_IncrementalIncomeLossRelatedToPotentialCommonShares" xlink:label="pten_IncrementalIncomeLossRelatedToPotentialCommonShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_IncrementalIncomeLossRelatedToPotentialCommonShares_lbl" xml:lang="en-US" id="id_22026_478833_3_1">Incremental Income (Loss) Related to Potential Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_IncrementalIncomeLossRelatedToPotentialCommonShares_lbl" xml:lang="en-US" id="id_22026_478833_1_1">Incremental Income Loss Related To Potential Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_IncrementalIncomeLossRelatedToPotentialCommonShares_lbl" xml:lang="en-US" id="id_22026_478833_2_1">Add incremental earnings related to potential common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_IncrementalIncomeLossRelatedToPotentialCommonShares" xlink:to="pten_IncrementalIncomeLossRelatedToPotentialCommonShares_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_InterestCoverageRatio" xlink:label="pten_InterestCoverageRatio"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_InterestCoverageRatio_lbl" xml:lang="en-US" id="id_22026_457741_3_1">Interest Coverage ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_InterestCoverageRatio_lbl" xml:lang="en-US" id="id_22026_457741_1_1">Interest Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_InterestCoverageRatio_lbl" xml:lang="en-US" id="id_22026_457741_2_1">Interest coverage ratio that the Company must exceed on the last day of the fiscal quarter</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_InterestCoverageRatio" xlink:to="pten_InterestCoverageRatio_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_22026_446767_1_1">Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_22026_446767_8_1">Interest expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPaidCapitalized" xlink:label="us-gaap_InterestPaidCapitalized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidCapitalized_lbl" xml:lang="en-US" id="id_22026_452253_1_1">Interest Paid Capitalized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaidCapitalized_lbl" xml:lang="en-US" id="id_22026_452253_2_1">Interest expense, capitalized interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidCapitalized" xlink:to="us-gaap_InterestPaidCapitalized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="us-gaap_InterestPaidNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US" id="id_22026_451709_1_1">Interest Paid Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US" id="id_22026_451709_2_1">Interest, net of capitalized interest of $1,968 in 2012 and $2,043 in 2011</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="us-gaap_InterestPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrent_lbl" xml:lang="en-US" id="id_22026_444506_1_1">Interest Payable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPayableCurrent_lbl" xml:lang="en-US" id="id_22026_444506_2_1">Accrued interest payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="us-gaap_IntersegmentEliminationMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IntersegmentEliminationMember_lbl" xml:lang="en-US" id="id_22026_453759_1_1">Intersegment Elimination [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IntersegmentEliminationMember_lbl" xml:lang="en-US" id="id_22026_453759_2_1">Intersegment Elimination</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntersegmentEliminationMember" xlink:to="us-gaap_IntersegmentEliminationMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_22026_445998_1_1">Inventory Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_22026_445998_2_1">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xml:lang="en-US" id="id_22026_442125_1_1">Investment Income Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xml:lang="en-US" id="id_22026_442125_2_1">Interest income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeInterest" xlink:to="us-gaap_InvestmentIncomeInterest_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Land" xlink:label="us-gaap_Land"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Land_lbl" xml:lang="en-US" id="id_22026_448386_1_1">Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Land_lbl" xml:lang="en-US" id="id_22026_448386_2_1">Land</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Land" xlink:to="us-gaap_Land_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_22026_440692_1_1">Legal Entity [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_22026_440692_2_1">Legal Entity [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="us-gaap_LetterOfCreditMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LetterOfCreditMember_lbl" xml:lang="en-US" id="id_22026_442748_1_1">Letter Of Credit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LetterOfCreditMember_lbl" xml:lang="en-US" id="id_22026_442748_2_1">Letter of Credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LetterOfCreditMember" xlink:to="us-gaap_LetterOfCreditMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="us-gaap_LettersOfCreditOutstandingAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xml:lang="en-US" id="id_22026_442180_1_1">Letters Of Credit Outstanding Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xml:lang="en-US" id="id_22026_442180_2_1">Letters of credit, collateral for retrospective premiums and retained losses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xml:lang="en-US" id="id_22026_442180_12_1">Unfunded letters of credit, amount outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LettersOfCreditOutstandingAmount" xlink:to="us-gaap_LettersOfCreditOutstandingAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_22026_454926_1_1">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_22026_454926_6_1">Total liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_22026_452563_1_1">Liabilities And Stockholders Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_22026_452563_6_1">Total liabilities and stockholders' equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_22026_445804_1_1">Liabilities And Stockholders Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_22026_445804_2_1">LIABILITIES AND STOCKHOLDERS' EQUITY</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_442283_1_1">Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_442283_6_1">Total current liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_22026_453630_1_1">Liabilities Current [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_22026_453630_2_1">Current liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_LIBORMember" xlink:label="pten_LIBORMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_LIBORMember_lbl" xml:lang="en-US" id="id_22026_468934_3_1">LIBOR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_LIBORMember_lbl" xml:lang="en-US" id="id_22026_468934_1_1">L I B O R [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_LIBORMember_lbl" xml:lang="en-US" id="id_22026_468934_2_1">LIBOR</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_LIBORMember" xlink:to="pten_LIBORMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCredit" xlink:label="us-gaap_LineOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US" id="id_22026_447803_1_1">Line Of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US" id="id_22026_447803_2_1">Line of credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_LineOfCreditFacilityAdditionalBorrowingCapacity" xlink:label="pten_LineOfCreditFacilityAdditionalBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_LineOfCreditFacilityAdditionalBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_460615_3_1">Line of Credit Facility, Additional Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_LineOfCreditFacilityAdditionalBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_460615_1_1">Line Of Credit Facility Additional Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_LineOfCreditFacilityAdditionalBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_460615_2_1">Aggregate amount by which the revolving credit facility can be increased</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_LineOfCreditFacilityAdditionalBorrowingCapacity" xlink:to="pten_LineOfCreditFacilityAdditionalBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl" xml:lang="en-US" id="id_22026_446694_1_1">Line Of Credit Facility Amount Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl" xml:lang="en-US" id="id_22026_446694_2_1">Line of credit, amount outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:to="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="us-gaap_LineOfCreditFacilityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xml:lang="en-US" id="id_22026_455316_1_1">Line Of Credit Facility [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xml:lang="en-US" id="id_22026_455316_2_1">Line of Credit Facility [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAxis" xlink:to="us-gaap_LineOfCreditFacilityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityCovenantTerms" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms_lbl" xml:lang="en-US" id="id_22026_453867_1_1">Line Of Credit Facility Covenant Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms_lbl" xml:lang="en-US" id="id_22026_453867_2_1">Financial covenant description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCovenantTerms" xlink:to="us-gaap_LineOfCreditFacilityCovenantTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_453929_1_1">Line Of Credit Facility Current Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_453929_2_1">Current aggregate borrowing capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms_lbl" xml:lang="en-US" id="id_22026_442659_1_1">Line Of Credit Facility Frequency Of Payment And Payment Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms_lbl" xml:lang="en-US" id="id_22026_442659_2_1">Line of credit facility, frequency of payment and payment terms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms" xlink:to="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityFrequencyOfPayments" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPayments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPayments_lbl" xml:lang="en-US" id="id_22026_445017_1_1">Line Of Credit Facility Frequency Of Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPayments_lbl" xml:lang="en-US" id="id_22026_445017_2_1">Line of credit facility, frequency of payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityFrequencyOfPayments" xlink:to="us-gaap_LineOfCreditFacilityFrequencyOfPayments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xml:lang="en-US" id="id_22026_441096_1_1">Line Of Credit Facility Interest Rate At Period End</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xml:lang="en-US" id="id_22026_441096_2_1">Line of credit, interest rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd" xlink:to="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xml:lang="en-US" id="id_22026_441313_1_1">Line Of Credit Facility Lender [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xml:lang="en-US" id="id_22026_441313_2_1">Line of Credit Facility, Lender [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLenderDomain" xlink:to="us-gaap_LineOfCreditFacilityLenderDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_442636_1_1">Line Of Credit Facility Maximum Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_442636_2_1">Credit facility, maximum borrowing capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_449165_1_1">Line Of Credit Facility Remaining Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xml:lang="en-US" id="id_22026_449165_2_1">Line of credit, available borrowing capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xml:lang="en-US" id="id_22026_455771_1_1">Line Of Credit Facility Unused Capacity Commitment Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xml:lang="en-US" id="id_22026_455771_2_1">Commitment fee payable to the lenders for the unused portion of the revolving credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:to="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_22026_455857_1_1">Long Term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_22026_455857_6_1">Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="us-gaap_LongTermDebtCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="id_22026_454574_1_1">Long Term Debt Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="id_22026_454574_2_1">Current portion of long-term debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US" id="id_22026_453219_1_1">Long Term Debt Maturities Repayments Of Principal After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US" id="id_22026_453219_2_1">Thereafter</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US" id="id_22026_450403_1_1">Long Term Debt Maturities Repayments Of Principal In Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US" id="id_22026_450403_2_1">2012</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US" id="id_22026_447776_1_1">Long Term Debt Maturities Repayments Of Principal In Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US" id="id_22026_447776_2_1">2016</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US" id="id_22026_444457_1_1">Long Term Debt Maturities Repayments Of Principal In Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US" id="id_22026_444457_2_1">2015</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US" id="id_22026_444258_1_1">Long Term Debt Maturities Repayments Of Principal In Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US" id="id_22026_444258_2_1">2014</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US" id="id_22026_456389_1_1">Long Term Debt Maturities Repayments Of Principal In Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US" id="id_22026_456389_2_1">2013</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" xml:lang="en-US" id="id_22026_483036_3_1">Long Term Debt Maturities Repayments Of Principal [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" xml:lang="en-US" id="id_22026_483036_1_1">Long Term Debt Maturities Repayments Of Principal [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" xml:lang="en-US" id="id_22026_483036_2_1">Long Term Debt Maturities Repayments Of Principal [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" xlink:to="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" xml:lang="en-US" id="id_22026_483035_3_1">Long Term Debt Maturities Repayments Of Principal [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" xml:lang="en-US" id="id_22026_483035_1_1">Long Term Debt Maturities Repayments Of Principal [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" xml:lang="en-US" id="id_22026_483035_2_1">Long Term Debt Maturities Repayments Of Principal [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" xlink:to="pten_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtTextBlock" xlink:label="us-gaap_LongTermDebtTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xml:lang="en-US" id="id_22026_443532_1_1">Long Term Debt [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xml:lang="en-US" id="id_22026_443532_2_1">Long Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtTextBlock" xlink:to="us-gaap_LongTermDebtTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US" id="id_22026_453412_1_1">Longterm Debt Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US" id="id_22026_453412_2_1">Long-term Debt, Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US" id="id_22026_445336_1_1">Longterm Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US" id="id_22026_445336_2_1">Long-term Debt, Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermLineOfCredit" xlink:label="us-gaap_LongTermLineOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermLineOfCredit_lbl" xml:lang="en-US" id="id_22026_448919_1_1">Long Term Line Of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermLineOfCredit_lbl" xml:lang="en-US" id="id_22026_448919_2_1">Borrowings under revolving credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermLineOfCredit" xlink:to="us-gaap_LongTermLineOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="us-gaap_MaterialReconcilingItemsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaterialReconcilingItemsMember_lbl" xml:lang="en-US" id="id_22026_448949_1_1">Material Reconciling Items [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaterialReconcilingItemsMember_lbl" xml:lang="en-US" id="id_22026_448949_2_1">Corporate and other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaterialReconcilingItemsMember" xlink:to="us-gaap_MaterialReconcilingItemsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_22026_454410_1_1">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_22026_454410_2_1">Maximum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_22026_452760_1_1">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_22026_452760_2_1">Minimum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2" xlink:label="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2_lbl" xml:lang="en-US" id="id_22026_484227_3_1">Minimum Percentage of Fair Value Transactions Corroborated Using Observable Market Inputs Required for Level 2</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2_lbl" xml:lang="en-US" id="id_22026_484227_1_1">Minimum Percentage Of Fair Value Transactions Corroborated Using Observable Market Inputs Required For Level 2</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2_lbl" xml:lang="en-US" id="id_22026_484227_2_1">Current market rates used in measuring fair value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2" xlink:to="pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_22026_455588_1_1">Net Cash Provided By Used In Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_22026_455588_6_1">Net cash used in financing activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_441258_1_1">Net Cash Provided By Used In Financing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_441258_2_1">Cash flows from financing activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_22026_442115_1_1">Net Cash Provided By Used In Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_22026_442115_6_1">Net cash used in investing activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_446874_1_1">Net Cash Provided By Used In Investing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_446874_2_1">Cash flows from investing activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_22026_444138_1_1">Net Cash Provided By Used In Operating Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_22026_444138_6_1">Net cash provided by operating activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_455701_1_1">Net Cash Provided By Used In Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_22026_455701_2_1">Cash flows from operating activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases" xlink:label="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases_lbl" xml:lang="en-US" id="id_22026_479034_3_1">Net Decrease (Increase) In Deposits on Equipment Purchases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases_lbl" xml:lang="en-US" id="id_22026_479034_1_1">Net Decrease Increase In Deposits On Equipment Purchases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases_lbl" xml:lang="en-US" id="id_22026_479034_2_1">Net (increase) decrease in deposits on equipment purchases</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases" xlink:to="pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl" xml:lang="en-US" id="id_22026_445762_1_1">Noncash Or Part Noncash Acquisition Net Nonmonetary Assets Acquired Liabilities Assumed 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl" xml:lang="en-US" id="id_22026_445762_2_1">Net increase in payables for purchase of property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:label="us-gaap_NoncompeteAgreementsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xml:lang="en-US" id="id_22026_441752_1_1">Noncompete Agreements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncompeteAgreementsMember_lbl" xml:lang="en-US" id="id_22026_441752_2_1">Non-compete agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncompeteAgreementsMember" xlink:to="us-gaap_NoncompeteAgreementsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_22026_448410_1_1">Nonoperating Income Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_22026_448410_6_1">Total other expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_22026_451121_1_1">Nonoperating Income Expense [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_22026_451121_2_1">Other income (expense):</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_NonRevolvingSeniorSecuredTermLoanMember" xlink:label="pten_NonRevolvingSeniorSecuredTermLoanMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_NonRevolvingSeniorSecuredTermLoanMember_lbl" xml:lang="en-US" id="id_22026_471061_3_1">Non Revolving Senior Secured Term Loan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_NonRevolvingSeniorSecuredTermLoanMember_lbl" xml:lang="en-US" id="id_22026_471061_1_1">Non Revolving Senior Secured Term Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_NonRevolvingSeniorSecuredTermLoanMember_lbl" xml:lang="en-US" id="id_22026_471061_2_1">Non Revolving Senior Secured Term Loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_NonRevolvingSeniorSecuredTermLoanMember" xlink:to="pten_NonRevolvingSeniorSecuredTermLoanMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotesAndLoansReceivableGrossCurrent" xlink:label="us-gaap_NotesAndLoansReceivableGrossCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesAndLoansReceivableGrossCurrent_lbl" xml:lang="en-US" id="id_22026_443539_1_1">Notes And Loans Receivable Gross Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesAndLoansReceivableGrossCurrent_lbl" xml:lang="en-US" id="id_22026_443539_2_1">Notes receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesAndLoansReceivableGrossCurrent" xlink:to="us-gaap_NotesAndLoansReceivableGrossCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotesAndLoansReceivableNetCurrent" xlink:label="us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesAndLoansReceivableNetCurrent_lbl" xml:lang="en-US" id="id_22026_452283_1_1">Notes And Loans Receivable Net Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesAndLoansReceivableNetCurrent_lbl" xml:lang="en-US" id="id_22026_452283_2_1">Notes receivable outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesAndLoansReceivableNetCurrent" xlink:to="us-gaap_NotesAndLoansReceivableNetCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_NotesReceivableInterestRate" xlink:label="pten_NotesReceivableInterestRate"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_NotesToFinancialStatementsAbstract_lbl" xml:lang="en-US" id="id_22026_457102_2_1">Notes to Financial Statements [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_NotesToFinancialStatementsAbstract" xlink:to="pten_NotesToFinancialStatementsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_NumberOfCovenants" xlink:label="pten_NumberOfCovenants"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_NumberOfCovenants_lbl" xml:lang="en-US" id="id_22026_478842_3_1">Number of Covenants</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_NumberOfReportableBusinessSegments" xlink:label="pten_NumberOfReportableBusinessSegments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_NumberOfReportableBusinessSegments_lbl" xml:lang="en-US" id="id_22026_467159_3_1">Number of Reportable Business Segments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_NumberOfReportableBusinessSegments_lbl" xml:lang="en-US" id="id_22026_467159_1_1">Number Of Reportable Business Segments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_NumberOfReportableBusinessSegments_lbl" xml:lang="en-US" id="id_22026_467159_2_1">Number of reportable business segments</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OilAndGasProductionExpense" xlink:label="us-gaap_OilAndGasProductionExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OilAndGasProductionExpense_lbl" xml:lang="en-US" id="id_22026_455442_1_1">Oil And Gas Production Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OilAndGasProductionExpense_lbl" xml:lang="en-US" id="id_22026_455442_2_1">Oil and natural gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OilAndGasProductionExpense" xlink:to="us-gaap_OilAndGasProductionExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OilAndGasPropertySuccessfulEffortMethodGross" xlink:label="us-gaap_OilAndGasPropertySuccessfulEffortMethodGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OilAndGasPropertySuccessfulEffortMethodGross_lbl" xml:lang="en-US" id="id_22026_444063_1_1">Oil And Gas Property Successful Effort Method Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OilAndGasPropertySuccessfulEffortMethodGross_lbl" xml:lang="en-US" id="id_22026_444063_2_1">Oil and natural gas properties</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OilAndGasPropertySuccessfulEffortMethodGross" xlink:to="us-gaap_OilAndGasPropertySuccessfulEffortMethodGross_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OilAndGasSalesRevenue" xlink:label="us-gaap_OilAndGasSalesRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OilAndGasSalesRevenue_lbl" xml:lang="en-US" id="id_22026_452213_1_1">Oil And Gas Sales Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OilAndGasSalesRevenue_lbl" xml:lang="en-US" id="id_22026_452213_2_1">Oil and natural gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OilAndGasSalesRevenue" xlink:to="us-gaap_OilAndGasSalesRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_OilAndNaturalGasMember" xlink:label="pten_OilAndNaturalGasMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_OilAndNaturalGasMember_lbl" xml:lang="en-US" id="id_22026_478840_3_1">Oil and Natural Gas</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_OilAndNaturalGasMember_lbl" xml:lang="en-US" id="id_22026_478840_1_1">Oil And Natural Gas [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_OilAndNaturalGasMember_lbl" xml:lang="en-US" id="id_22026_478840_2_1">Oil and Natural Gas</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_OilAndNaturalGasMember" xlink:to="pten_OilAndNaturalGasMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingCostsAndExpensesAbstract" xlink:label="us-gaap_OperatingCostsAndExpensesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingCostsAndExpensesAbstract_lbl" xml:lang="en-US" id="id_22026_448004_1_1">Operating Costs And Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingCostsAndExpensesAbstract_lbl" xml:lang="en-US" id="id_22026_448004_2_1">Operating costs and expenses:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingCostsAndExpensesAbstract" xlink:to="us-gaap_OperatingCostsAndExpensesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_22026_451396_1_1">Operating Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_22026_451396_2_1">Operating income (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_22026_451396_6_1">Operating income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="us-gaap_OperatingSegmentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xml:lang="en-US" id="id_22026_450145_1_1">Operating Segments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xml:lang="en-US" id="id_22026_450145_2_1">Operating Segments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingSegmentsMember" xlink:to="us-gaap_OperatingSegmentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_451991_1_1">Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_451991_2_1">Basis of Consolidation and Presentation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_441619_1_1">Other Accrued Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_22026_441619_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAccruedLiabilitiesCurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="us-gaap_OtherAssetsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xml:lang="en-US" id="id_22026_455575_1_1">Other Assets Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xml:lang="en-US" id="id_22026_455575_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_22026_441001_1_1">Other Assets Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_22026_441001_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_443296_1_1">Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_22026_443296_2_1">Foreign currency translation adjustment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xml:lang="en-US" id="id_22026_444483_1_1">Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xml:lang="en-US" id="id_22026_444483_2_1">Other comprehensive income, net of taxes of $0 and $0, respectively:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax_lbl" xml:lang="en-US" id="id_22026_455405_1_1">Other Comprehensive Income Loss Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax_lbl" xml:lang="en-US" id="id_22026_455405_2_1">Other comprehensive income, taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossTax_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_22026_448359_1_1">Other Liabilities Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_22026_448359_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLongTermDebtNoncurrent" xlink:label="us-gaap_OtherLongTermDebtNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLongTermDebtNoncurrent_lbl" xml:lang="en-US" id="id_22026_453483_1_1">Other Long Term Debt Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherLongTermDebtNoncurrent_lbl" xml:lang="en-US" id="id_22026_453483_2_1">Other long-term debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLongTermDebtNoncurrent" xlink:to="us-gaap_OtherLongTermDebtNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xml:lang="en-US" id="id_22026_452415_1_1">Other Nonoperating Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xml:lang="en-US" id="id_22026_452415_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncome" xlink:to="us-gaap_OtherNonoperatingIncome_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US" id="id_22026_441280_1_1">Payments For Repurchase Of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US" id="id_22026_441280_8_1">Purchase of treasury stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xml:lang="en-US" id="id_22026_443089_1_1">Payments Of Debt Issuance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xml:lang="en-US" id="id_22026_443089_2_1">Debt issuance costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDebtIssuanceCosts" xlink:to="us-gaap_PaymentsOfDebtIssuanceCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_22026_454525_1_1">Payments Of Dividends</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_22026_454525_8_1">Dividends paid</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividends" xlink:to="us-gaap_PaymentsOfDividends_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_450798_1_1">Payments To Acquire Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_450798_8_1">Purchase of property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PercentageOfRepurchasePriceToPrincipalDebtAmount" xlink:label="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount_lbl" xml:lang="en-US" id="id_22026_474774_3_1">Percentage of repurchase price to principal debt amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount_lbl" xml:lang="en-US" id="id_22026_474774_1_1">Percentage Of Repurchase Price To Principal Debt Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount_lbl" xml:lang="en-US" id="id_22026_474774_2_1">Acceptance terms, percent of principal before accrued and unpaid interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount" xlink:to="pten_PercentageOfRepurchasePriceToPrincipalDebtAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PerformanceAwardBaseNumberOfShares" xlink:label="pten_PerformanceAwardBaseNumberOfShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PerformanceAwardBaseNumberOfShares_lbl" xml:lang="en-US" id="id_22026_483644_3_1">Performance Award, Base Number of Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PerformanceAwardBaseNumberOfShares_lbl" xml:lang="en-US" id="id_22026_483644_1_1">Performance Award Base Number Of Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PerformanceAwardBaseNumberOfShares_lbl" xml:lang="en-US" id="id_22026_483644_2_1">Base number of shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PerformanceAwardBaseNumberOfShares" xlink:to="pten_PerformanceAwardBaseNumberOfShares_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PerformanceAwardBasePayment" xlink:label="pten_PerformanceAwardBasePayment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PerformanceAwardBasePayment_lbl" xml:lang="en-US" id="id_22026_483643_3_1">Performance Award, Base Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PerformanceAwardBasePayment_lbl" xml:lang="en-US" id="id_22026_483643_1_1">Performance Award Base Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PerformanceAwardBasePayment_lbl" xml:lang="en-US" id="id_22026_483643_2_1">Base payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PerformanceAwardBasePayment" xlink:to="pten_PerformanceAwardBasePayment_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PerformanceUnitAwards2009Member" xlink:label="pten_PerformanceUnitAwards2009Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PerformanceUnitAwards2009Member_lbl" xml:lang="en-US" id="id_22026_478836_3_1">Performance Unit Awards 2009</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PerformanceUnitAwards2009Member_lbl" xml:lang="en-US" id="id_22026_478836_1_1">Performance Unit Awards 2009 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PerformanceUnitAwards2009Member_lbl" xml:lang="en-US" id="id_22026_478836_2_1">Performance Unit Awards 2009</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PerformanceUnitAwards2009Member" xlink:to="pten_PerformanceUnitAwards2009Member_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PerformanceUnitAwards2010Member" xlink:label="pten_PerformanceUnitAwards2010Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PerformanceUnitAwards2010Member_lbl" xml:lang="en-US" id="id_22026_478837_3_1">Performance Unit Awards 2010</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PerformanceUnitAwards2010Member_lbl" xml:lang="en-US" id="id_22026_478837_1_1">Performance Unit Awards 2010 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PerformanceUnitAwards2010Member_lbl" xml:lang="en-US" id="id_22026_478837_2_1">Performance Unit Awards 2010</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PerformanceUnitAwards2010Member" xlink:to="pten_PerformanceUnitAwards2010Member_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PerformanceUnitAwards2011Member" xlink:label="pten_PerformanceUnitAwards2011Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PerformanceUnitAwards2011Member_lbl" xml:lang="en-US" id="id_22026_483539_3_1">Performance Unit Awards 2011</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PerformanceUnitAwards2011Member_lbl" xml:lang="en-US" id="id_22026_483539_1_1">Performance Unit Awards 2011 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PerformanceUnitAwards2011Member_lbl" xml:lang="en-US" id="id_22026_483539_2_1">Performance Unit Awards 2011</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PerformanceUnitAwards2011Member" xlink:to="pten_PerformanceUnitAwards2011Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_22026_454155_1_1">Preferred Stock Par Or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_22026_454155_2_1">Preferred stock, par value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" id="id_22026_447581_1_1">Preferred Stock Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" id="id_22026_447581_2_1">Preferred stock, authorized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_452714_1_1">Preferred Stock Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" id="id_22026_452714_2_1">Preferred stock, shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_22026_452720_1_1">Preferred Stock Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_22026_452720_2_1">Preferred stock, par value $.01; authorized 1,000,000 shares, no shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PressurePumpingMember" xlink:label="pten_PressurePumpingMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PressurePumpingMember_lbl" xml:lang="en-US" id="id_22026_478839_3_1">Pressure Pumping</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PressurePumpingMember_lbl" xml:lang="en-US" id="id_22026_478839_1_1">Pressure Pumping [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PressurePumpingMember_lbl" xml:lang="en-US" id="id_22026_478839_2_1">Pressure Pumping</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PressurePumpingMember" xlink:to="pten_PressurePumpingMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PressurePumpingOperatingCost" xlink:label="pten_PressurePumpingOperatingCost"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PressurePumpingOperatingCost_lbl" xml:lang="en-US" id="id_22026_479030_3_1">Pressure Pumping Operating Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PressurePumpingOperatingCost_lbl" xml:lang="en-US" id="id_22026_479030_1_1">Pressure Pumping Operating Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PressurePumpingOperatingCost_lbl" xml:lang="en-US" id="id_22026_479030_2_1">Pressure pumping</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PressurePumpingOperatingCost" xlink:to="pten_PressurePumpingOperatingCost_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_PrincipalPaymentsPercentage" xlink:label="pten_PrincipalPaymentsPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_PrincipalPaymentsPercentage_lbl" xml:lang="en-US" id="id_22026_474447_3_1">Principal payments, percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_PrincipalPaymentsPercentage_lbl" xml:lang="en-US" id="id_22026_474447_1_1">Principal Payments Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_PrincipalPaymentsPercentage_lbl" xml:lang="en-US" id="id_22026_474447_2_1">Installment amounts percentage of the original principal amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PrincipalPaymentsPercentage" xlink:to="pten_PrincipalPaymentsPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromCollectionOfNotesReceivable" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xml:lang="en-US" id="id_22026_452765_1_1">Proceeds From Collection Of Notes Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xml:lang="en-US" id="id_22026_452765_2_1">Repayment of notes receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromCollectionOfNotesReceivable" xlink:to="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="us-gaap_ProceedsFromLinesOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xml:lang="en-US" id="id_22026_442761_1_1">Proceeds From Lines Of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromLinesOfCredit_lbl" xml:lang="en-US" id="id_22026_442761_2_1">Proceeds from borrowing under revolving credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromLinesOfCredit" xlink:to="us-gaap_ProceedsFromLinesOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_442013_1_1">Proceeds From Sale Of Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_22026_442013_2_1">Proceeds from disposal of assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSalesOfAssetsInvestingActivities" xlink:label="us-gaap_ProceedsFromSalesOfAssetsInvestingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSalesOfAssetsInvestingActivities_lbl" xml:lang="en-US" id="id_22026_447262_1_1">Proceeds From Sales Of Assets Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSalesOfAssetsInvestingActivities_lbl" xml:lang="en-US" id="id_22026_447262_2_1">Proceeds from sale of assets, investing activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSalesOfAssetsInvestingActivities" xlink:to="us-gaap_ProceedsFromSalesOfAssetsInvestingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xml:lang="en-US" id="id_22026_441393_1_1">Proceeds From Stock Options Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xml:lang="en-US" id="id_22026_441393_2_1">Proceeds from exercise of stock options</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromStockOptionsExercised" xlink:to="us-gaap_ProceedsFromStockOptionsExercised_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_22026_456234_1_1">Profit Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_22026_456234_2_1">Net income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_22026_456234_6_1">Net income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_452562_1_1">Property Plant And Equipment Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_452562_2_1">Property and Equipment</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_lbl" xml:lang="en-US" id="id_22026_453931_2_1">Reconciliation of Assets from Segment to Consolidated [Table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_lbl" xml:lang="en-US" id="id_22026_450411_2_1">Reconciliation of Revenue from Segments to Consolidated [Table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RelatedPartyDomain_lbl" xml:lang="en-US" id="id_22026_442080_2_1">Related Party [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="us-gaap_RelatedPartyDomain_lbl"/>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_RestrictedStockAwardsMember" xlink:label="pten_RestrictedStockAwardsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_RestrictedStockAwardsMember_lbl" xml:lang="en-US" id="id_22026_469077_3_1">Restricted Stock Awards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_RestrictedStockAwardsMember_lbl" xml:lang="en-US" id="id_22026_469077_1_1">Restricted Stock Awards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_RestrictedStockAwardsMember_lbl" xml:lang="en-US" id="id_22026_469077_2_1">Restricted Stock Awards</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_22026_455613_1_1">Scenario Unspecified [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_22026_455613_2_1">Scenario, Unspecified [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioUnspecifiedDomain" xlink:to="us-gaap_ScenarioUnspecifiedDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfAccruedLiabilitiesLineItems" xlink:label="pten_ScheduleOfAccruedLiabilitiesLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfAccruedLiabilitiesLineItems_lbl" xml:lang="en-US" id="id_22026_457560_3_1">Schedule of Accrued Liabilities [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfAccruedLiabilitiesLineItems_lbl" xml:lang="en-US" id="id_22026_457560_1_1">Schedule Of Accrued Liabilities [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ScheduleOfAccruedLiabilitiesLineItems_lbl" xml:lang="en-US" id="id_22026_457560_2_1">Schedule of Accrued Liabilities [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ScheduleOfAccruedLiabilitiesLineItems" xlink:to="pten_ScheduleOfAccruedLiabilitiesLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfAccruedLiabilitiesTable" xlink:label="pten_ScheduleOfAccruedLiabilitiesTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfAccruedLiabilitiesTable_lbl" xml:lang="en-US" id="id_22026_476463_3_1">Schedule of Accrued Liabilities [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfAccruedLiabilitiesTable_lbl" xml:lang="en-US" id="id_22026_476463_1_1">Schedule Of Accrued Liabilities [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ScheduleOfAccruedLiabilitiesTable_lbl" xml:lang="en-US" id="id_22026_476463_2_1">Schedule of Accrued Liabilities [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ScheduleOfAccruedLiabilitiesTable" xlink:to="pten_ScheduleOfAccruedLiabilitiesTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xml:lang="en-US" id="id_22026_451238_1_1">Schedule Of Accrued Liabilities Table [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xml:lang="en-US" id="id_22026_451238_2_1">Accrued Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xml:lang="en-US" id="id_22026_447540_1_1">Schedule Of Acquired Finite Lived Intangible Asset By Major Class [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xml:lang="en-US" id="id_22026_447540_2_1">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:to="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock" xlink:label="us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock_lbl" xml:lang="en-US" id="id_22026_448554_1_1">Schedule Of Change In Asset Retirement Obligation Table [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock_lbl" xml:lang="en-US" id="id_22026_448554_2_1">Changes to Company's Asset Retirement Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock" xlink:to="us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xml:lang="en-US" id="id_22026_454844_1_1">Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xml:lang="en-US" id="id_22026_454844_2_1">Summary of Operating Results from Discontinued Operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" xlink:to="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems_lbl" xml:lang="en-US" id="id_22026_457514_3_1">Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems_lbl" xml:lang="en-US" id="id_22026_457514_1_1">Schedule Of Earnings Per Share Basic And Diluted By Common Class [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems_lbl" xml:lang="en-US" id="id_22026_457514_2_1">Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" xlink:to="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable_lbl" xml:lang="en-US" id="id_22026_476453_3_1">Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable_lbl" xml:lang="en-US" id="id_22026_476453_1_1">Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable_lbl" xml:lang="en-US" id="id_22026_476453_2_1">Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US" id="id_22026_441721_1_1">Schedule Of Earnings Per Share Basic And Diluted Table [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US" id="id_22026_441721_2_1">Calculation of Income Per Share From Continuing and Discontinued Operations</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xml:lang="en-US" id="id_22026_445237_2_1">Gross Carrying Amount and Accumulated Amortization of Intangible Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="us-gaap_ScheduleOfGoodwillTable"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfGoodwillTable_lbl" xml:lang="en-US" id="id_22026_453755_2_1">Schedule of Goodwill [Table]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xml:lang="en-US" id="id_22026_444073_1_1">Schedule Of Goodwill [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xml:lang="en-US" id="id_22026_444073_2_1">Goodwill by Operating Segment</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock"/>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAxis_lbl" xml:lang="en-US" id="id_22026_476475_1_1">Schedule Of Share Based Compensation Arrangement By Share Based Payment Award [Axis]</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems_lbl" xml:lang="en-US" id="id_22026_457511_3_1">Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems_lbl" xml:lang="en-US" id="id_22026_457511_1_1">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Restricted Stock Units [Line Items]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems" xlink:to="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable_lbl" xml:lang="en-US" id="id_22026_476439_3_1">Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable_lbl" xml:lang="en-US" id="id_22026_476439_1_1">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Restricted Stock Units [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable_lbl" xml:lang="en-US" id="id_22026_476439_2_1">Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" xlink:to="pten_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_22026_450671_1_1">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_22026_450671_2_1">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US" id="id_22026_455462_2_1">Stock Option Activity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfSubsequentEventsTextBlock_lbl" xml:lang="en-US" id="id_22026_450810_2_1">Subsequent Event</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSubsequentEventsTextBlock" xlink:to="us-gaap_ScheduleOfSubsequentEventsTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US" id="id_22026_442531_1_1">Segment [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US" id="id_22026_442531_2_1">Segment [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentReportingAssetReconcilingItemLineItems_lbl" xml:lang="en-US" id="id_22026_451933_2_1">Segment Reporting, Asset Reconciling Item [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="us-gaap_SegmentReportingAssetReconcilingItemLineItems_lbl"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_SegmentReportingDisclosureLineItems" xlink:to="pten_SegmentReportingDisclosureLineItems_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_SegmentReportingDisclosureTable_lbl" xml:lang="en-US" id="id_22026_476384_1_1">Segment Reporting Disclosure [Table]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" id="id_22026_452685_2_1">Selling, general and administrative</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_SemiAnnualPaymentFirstPaymentMember" xlink:label="pten_SemiAnnualPaymentFirstPaymentMember"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_SemiAnnualPaymentFirstPaymentMember_lbl" xml:lang="en-US" id="id_22026_470629_1_1">Semi Annual Payment First Payment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_SemiAnnualPaymentFirstPaymentMember_lbl" xml:lang="en-US" id="id_22026_470629_2_1">Semi Annual Payment, First Payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_SemiAnnualPaymentFirstPaymentMember" xlink:to="pten_SemiAnnualPaymentFirstPaymentMember_lbl"/>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_SeriesASeniorNotes4.97PercentDueOctober5th2020Member" xlink:label="pten_SeriesASeniorNotes4.97PercentDueOctober5th2020Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_SeriesASeniorNotes4.97PercentDueOctober5th2020Member_lbl" xml:lang="en-US" id="id_22026_479035_3_1">Series A, Senior Notes, 4.97 Percent, Due October 5th 2020</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription_lbl" xml:lang="en-US" id="id_22026_449451_1_1">Share Based Compensation Arrangement By Share Based Payment Award Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription_lbl" xml:lang="en-US" id="id_22026_449451_2_1">Award description</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_lbl" xml:lang="en-US" id="id_22026_455403_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_lbl" xml:lang="en-US" id="id_22026_455403_2_1">Weighted Average Grant Date Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US" id="id_22026_454720_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US" id="id_22026_454720_2_1">Forfeited</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US" id="id_22026_454720_8_1">Forfeited</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_449365_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_449365_2_1">Forfeited</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US" id="id_22026_443968_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US" id="id_22026_443968_2_1">Granted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_447547_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_447547_2_1">Granted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_22026_441929_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_22026_441929_4_1">Outstanding at end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_22026_441929_5_1">Outstanding at beginning of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xml:lang="en-US" id="id_22026_451261_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested [Roll Forward]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xml:lang="en-US" id="id_22026_451261_2_1">Shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_453021_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_453021_5_1">Outstanding at beginning of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US" id="id_22026_451503_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US" id="id_22026_451503_8_1">Vested</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_22026_441820_1_1">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_22026_453552_1_1">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_22026_453552_2_1">Dividend yield</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="id_22026_452596_2_1">Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_22026_442947_2_1">Statement [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_22026_454336_2_1">Statement of Stockholders' Equity [Abstract]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementScenarioAxis" xlink:to="us-gaap_StatementScenarioAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US" id="id_22026_447352_2_1">Statement [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_22026_452258_1_1">Stockholders Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_22026_452258_2_1">Stockholders' equity:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_441733_1_1">Stockholders Equity Note Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_22026_441733_2_1">Stockholders' Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_StockholdersEquityNoteLineItems_lbl" xml:lang="en-US" id="id_22026_457458_3_1">Stockholders Equity Note [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_StockholdersEquityNoteLineItems_lbl" xml:lang="en-US" id="id_22026_457458_1_1">Stockholders Equity Note [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_StockholdersEquityNoteLineItems_lbl" xml:lang="en-US" id="id_22026_457458_2_1">Stockholders Equity Note [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_StockholdersEquityNoteLineItems" xlink:to="pten_StockholdersEquityNoteLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_StockholdersEquityNoteTable" xlink:label="pten_StockholdersEquityNoteTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_StockholdersEquityNoteTable_lbl" xml:lang="en-US" id="id_22026_476404_3_1">Stockholders Equity Note [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_StockholdersEquityNoteTable_lbl" xml:lang="en-US" id="id_22026_476404_1_1">Stockholders Equity Note [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_StockholdersEquityNoteTable_lbl" xml:lang="en-US" id="id_22026_476404_2_1">Stockholders Equity Note [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_StockholdersEquityNoteTable" xlink:to="pten_StockholdersEquityNoteTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xml:lang="en-US" id="id_22026_447625_2_1">Exercise of stock options</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US" id="id_22026_446114_1_1">Stock Repurchased During Period Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US" id="id_22026_446114_2_1">Treasury stock shares acquired</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl" xml:lang="en-US" id="id_22026_452527_1_1">Stock Repurchase Program Authorized Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl" xml:lang="en-US" id="id_22026_452527_2_1">Amount approved for repurchases under stock buyback program</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:to="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_StockRepurchaseProgramAuthorizedRepurchaseAmount" xlink:label="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount_lbl" xml:lang="en-US" id="id_22026_478845_3_1">Stock Repurchase Program, Authorized Repurchase Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount_lbl" xml:lang="en-US" id="id_22026_478845_1_1">Stock Repurchase Program Authorized Repurchase Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount_lbl" xml:lang="en-US" id="id_22026_478845_2_1">Amount authorized to purchase the Company's outstanding common stock under the program</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount" xlink:to="pten_StockRepurchaseProgramAuthorizedRepurchaseAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="us-gaap_SubsequentEventLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xml:lang="en-US" id="id_22026_447720_1_1">Subsequent Event [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xml:lang="en-US" id="id_22026_447720_2_1">Subsequent Event [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventLineItems" xlink:to="us-gaap_SubsequentEventLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_SubsequentEventMember" xlink:label="pten_SubsequentEventMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_SubsequentEventMember_lbl" xml:lang="en-US" id="id_22026_468879_3_1">Subsequent Event [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_SubsequentEventMember_lbl" xml:lang="en-US" id="id_22026_468879_1_1">Subsequent Event [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_SubsequentEventMember_lbl" xml:lang="en-US" id="id_22026_468879_2_1">Subsequent Event</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_SubsequentEventMember" xlink:to="pten_SubsequentEventMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="us-gaap_SubsequentEventTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTable_lbl" xml:lang="en-US" id="id_22026_454937_1_1">Subsequent Event [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTable_lbl" xml:lang="en-US" id="id_22026_454937_2_1">Subsequent Event [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTable" xlink:to="us-gaap_SubsequentEventTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_22026_452505_1_1">Subsequent Event Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_22026_452505_2_1">Subsequent Event Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="us-gaap_SubsequentEventTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_22026_441143_1_1">Subsequent Event Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_22026_441143_2_1">Subsequent Event Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="us-gaap_SubsidiariesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsidiariesMember_lbl" xml:lang="en-US" id="id_22026_442607_1_1">Subsidiaries [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsidiariesMember_lbl" xml:lang="en-US" id="id_22026_442607_2_1">A subsidiary of the Company</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiariesMember" xlink:to="us-gaap_SubsidiariesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xml:lang="en-US" id="id_22026_448531_1_1">Supplemental Cash Flow Elements [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xml:lang="en-US" id="id_22026_448531_2_1">Supplemental disclosure of cash flow information:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_SupplementalCashFlowElementsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_SwinglineLoansMember" xlink:label="pten_SwinglineLoansMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_SwinglineLoansMember_lbl" xml:lang="en-US" id="id_22026_480303_3_1">Swingline Loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_SwinglineLoansMember_lbl" xml:lang="en-US" id="id_22026_480303_1_1">Swingline Loans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_SwinglineLoansMember_lbl" xml:lang="en-US" id="id_22026_480303_2_1">Swing Line Facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_SwinglineLoansMember" xlink:to="pten_SwinglineLoansMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:label="us-gaap_TaxesPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxesPayableCurrent_lbl" xml:lang="en-US" id="id_22026_447980_1_1">Taxes Payable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TaxesPayableCurrent_lbl" xml:lang="en-US" id="id_22026_447980_2_1">Property, sales, use and other taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxesPayableCurrent" xlink:to="us-gaap_TaxesPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_TermLoanFacilityMember" xlink:label="pten_TermLoanFacilityMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_TermLoanFacilityMember_lbl" xml:lang="en-US" id="id_22026_468316_3_1">Term Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_TermLoanFacilityMember_lbl" xml:lang="en-US" id="id_22026_468316_1_1">Term Loan Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_TermLoanFacilityMember_lbl" xml:lang="en-US" id="id_22026_468316_2_1">Term Loan Facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_TermLoanFacilityMember" xlink:to="pten_TermLoanFacilityMember_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_TetraTechnologiesIncMember" xlink:label="pten_TetraTechnologiesIncMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_TetraTechnologiesIncMember_lbl" xml:lang="en-US" id="id_22026_544049_3_1">Tetra Technologies Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_TetraTechnologiesIncMember_lbl" xml:lang="en-US" id="id_22026_544049_1_1">Tetra Technologies Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_TetraTechnologiesIncMember_lbl" xml:lang="en-US" id="id_22026_544049_2_1">Tetra Technologies Inc</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_TetraTechnologiesIncMember" xlink:to="pten_TetraTechnologiesIncMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_22026_440666_1_1">Trading Symbol</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_22026_440666_2_1">Trading Symbol</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="us-gaap_TreasuryStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockMember_lbl" xml:lang="en-US" id="id_22026_449678_1_1">Treasury Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TreasuryStockMember_lbl" xml:lang="en-US" id="id_22026_449678_2_1">Treasury Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockMember" xlink:to="us-gaap_TreasuryStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="us-gaap_TreasuryStockShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockShares_lbl" xml:lang="en-US" id="id_22026_455148_1_1">Treasury Stock Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TreasuryStockShares_lbl" xml:lang="en-US" id="id_22026_455148_2_1">Treasury stock, shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="us-gaap_TreasuryStockSharesAcquired"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xml:lang="en-US" id="id_22026_441604_1_1">Treasury Stock Shares Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xml:lang="en-US" id="id_22026_441604_2_1">Treasury stock shares acquired</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockSharesAcquired" xlink:to="us-gaap_TreasuryStockSharesAcquired_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="us-gaap_TreasuryStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockValue_lbl" xml:lang="en-US" id="id_22026_442195_1_1">Treasury Stock Value</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_TreasuryStockValue_lbl" xml:lang="en-US" id="id_22026_442195_8_1">Treasury stock, at cost, 27,488,254 shares and 27,487,571 shares at March 31, 2012 and December 31, 2011, respectively</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValue" xlink:to="us-gaap_TreasuryStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xml:lang="en-US" id="id_22026_454819_1_1">Treasury Stock Value Acquired Cost Method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xml:lang="en-US" id="id_22026_454819_2_1">Purchase price for treasury stock acquired</label>
    <label xlink:type="resource" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xml:lang="en-US" id="id_22026_454819_8_1">Purchase of treasury stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:to="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_TypeOfOperationsAxis" xlink:label="pten_TypeOfOperationsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_TypeOfOperationsAxis_lbl" xml:lang="en-US" id="id_22026_476476_3_1">Type of Operations [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_TypeOfOperationsAxis_lbl" xml:lang="en-US" id="id_22026_476476_1_1">Type Of Operations [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_TypeOfOperationsAxis_lbl" xml:lang="en-US" id="id_22026_476476_2_1">Type of Operations [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_TypeOfOperationsAxis" xlink:to="pten_TypeOfOperationsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_TypeOfOperationsDomain" xlink:label="pten_TypeOfOperationsDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_TypeOfOperationsDomain_lbl" xml:lang="en-US" id="id_22026_467553_3_1">Type of Operations [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_TypeOfOperationsDomain_lbl" xml:lang="en-US" id="id_22026_467553_1_1">Type Of Operations [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_TypeOfOperationsDomain_lbl" xml:lang="en-US" id="id_22026_467553_2_1">Type of Operations [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_TypeOfOperationsDomain" xlink:to="pten_TypeOfOperationsDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_UniversalWirelineMember" xlink:label="pten_UniversalWirelineMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_UniversalWirelineMember_lbl" xml:lang="en-US" id="id_22026_491008_3_1">Universal Wireline</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_UniversalWirelineMember_lbl" xml:lang="en-US" id="id_22026_491008_1_1">Universal Wireline [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_UniversalWirelineMember_lbl" xml:lang="en-US" id="id_22026_491008_2_1">Universal Wireline, Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_UniversalWirelineMember" xlink:to="pten_UniversalWirelineMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" xml:lang="en-US" id="id_22026_443155_1_1">Unrecorded Unconditional Purchase Obligation Balance Sheet Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_lbl" xml:lang="en-US" id="id_22026_443155_2_1">Current obligation</label>
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    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear" xlink:label="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_lbl" xml:lang="en-US" id="id_22026_496809_3_1">Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_lbl" xml:lang="en-US" id="id_22026_496809_1_1">Unrecorded Unconditional Purchase Obligation Due In Remainder Of Fiscal Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_lbl" xml:lang="en-US" id="id_22026_496809_2_1">Obligation for remainder of the year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear" xlink:to="pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xml:lang="en-US" id="id_22026_456300_1_1">Weighted Average Number Diluted Shares Outstanding Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xml:lang="en-US" id="id_22026_456300_2_1">Add dilutive effect of potential common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_22026_455335_1_1">Weighted Average Number Of Diluted Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_22026_455335_2_1">Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_22026_455335_6_1">Weighted average number of diluted common shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="id_22026_443946_1_1">Weighted Average Number Of Shares Outstanding [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="id_22026_443946_2_1">Weighted average number of common shares outstanding:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_22026_453003_1_1">Weighted Average Number Of Shares Outstanding Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_22026_453003_2_1">Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_22026_453003_12_1">Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WorkersCompensationLiabilityCurrent" xlink:label="us-gaap_WorkersCompensationLiabilityCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WorkersCompensationLiabilityCurrent_lbl" xml:lang="en-US" id="id_22026_444698_1_1">Workers Compensation Liability Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WorkersCompensationLiabilityCurrent_lbl" xml:lang="en-US" id="id_22026_444698_2_1">Workers' compensation liability</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WorkersCompensationLiabilityCurrent" xlink:to="us-gaap_WorkersCompensationLiabilityCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="pten-20120331.xsd#pten_WorkingCapital" xlink:label="pten_WorkingCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="pten_WorkingCapital_lbl" xml:lang="en-US" id="id_22026_457934_3_1">Working capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="pten_WorkingCapital_lbl" xml:lang="en-US" id="id_22026_457934_1_1">Working Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="pten_WorkingCapital_lbl" xml:lang="en-US" id="id_22026_457934_2_1">Associated financial working capital retained</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_WorkingCapital" xlink:to="pten_WorkingCapital_lbl"/>
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</linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>10
<FILENAME>pten-20120331_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems', window );"><strong>Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate', window );">Volatility</a></td>
        <td class="nump">48.72%<span></span></td>
        <td class="nump">47.43%<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm', window );">Expected term (in years)</a></td>
        <td class="nump">5.00<span></span></td>
        <td class="nump">5.00<span></span></td>
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        <td class="nump">1.00%<span></span></td>
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        <td class="nump">0.83%<span></span></td>
        <td class="nump">2.01%<span></span></td>
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                <p>The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph e(2)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (f)(2)(iii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 14.D.2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6793087&amp;loc=d3e301413-122809<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph e(2)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 14<br><br> -Section D<br><br> -Subsection 2<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (f)(2)(i)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The risk-free interest rate assumption that is used in valuing an option on its own shares.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph e(2)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (f)(2)(iv)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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                <p>The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph e(2)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (f)(2)(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EIJAC">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Changes to Company's Asset Retirement Obligations (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
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          <div>Mar. 31, 2012</div>
        </th>
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          <div>Mar. 31, 2011</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ReconciliationOfChangesInAssetRetirementObligationsLineItems', window );"><strong>Reconciliation of Changes in Asset Retirement Obligations [Line Items]</strong></a></td>
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        <td class="nump">106<span></span></td>
        <td class="nump">65<span></span></td>
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        <td class="num">(68)<span></span></td>
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        <td class="nump">37<span></span></td>
        <td class="nump">35<span></span></td>
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        <td class="nump">550<span></span></td>
        <td class="num">(2)<span></span></td>
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        <td class="nump">$ 4,080<span></span></td>
        <td class="nump">$ 3,146<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Asset Retirement Obligation, Accretion Expense Accrued</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 143<br><br> -Paragraph 3, 10, 22<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Asset Retirement Obligation<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6505190<br><br><br><br></p>
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                <p>Amount of asset retirement obligations incurred during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 143<br><br> -Paragraph 22<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br><br><br><br></p>
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                <p>Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.</p>
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                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 143<br><br> -Paragraph 22<br><br> -Subparagraph c(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br><br><br><br></p>
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                <p>Amount of the Increase or Decrease in the amount of the asset retirement obligation during the current period for changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.</p>
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                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 143<br><br> -Paragraph 22<br><br> -Subparagraph c(4)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)(4)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EJUAE">
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        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>Business Segments - Assets (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
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        </th>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">$ 4,363,832<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingAssetReconcilingItemLineItems', window );"><strong>Segment Reporting, Asset Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">3,384,088<span></span></td>
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        <td class="nump">3,252,116<span></span></td>
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      <tr class="rh">
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          <div class="a">Operating Segments | Pressure Pumping</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingAssetReconcilingItemLineItems', window );"><strong>Segment Reporting, Asset Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="nump">789,213<span></span></td>
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        <td class="nump">748,643<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Assets</a></td>
        <td class="nump">48,118<span></span></td>
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        <td class="nump">44,990<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingAssetReconcilingItemLineItems', window );"><strong>Segment Reporting, Asset Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">$ 142,413<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
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              <td style="vertical-align: top;" valign="top">Corporate and other assets primarily include cash on hand, income taxes receivable and certain deferred tax assets.</td>
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                <p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 7<br><br> -Section 03<br><br> -Paragraph 12<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br> -Section S99<br><br> -Name Accounting Standards Codification<br><br> -Publisher FASB<br><br> -Paragraph 1<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Concepts (CON)<br><br> -Number 6<br><br> -Paragraph 25<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 18<br><br> -Article 5<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.18)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
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                <table border="0" cellpadding="0" cellspacing="0">
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</div>
          <div>Maximum</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011

</div>
          <div>2010 Credit Agreement

</div>
          <div>LIBOR</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>LIBOR

</div>
          <div>Minimum</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>LIBOR

</div>
          <div>Maximum</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011

</div>
          <div>2010 Credit Agreement

</div>
          <div>Base Rate</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Base Rate

</div>
          <div>Minimum</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Base Rate

</div>
          <div>Maximum</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Revolving Credit Facility</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012

</div>
          <div>2010 Credit Agreement

</div>
          <div>Revolving Credit Facility</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012

</div>
          <div>2010 Credit Agreement

</div>
          <div>Revolving Credit Facility

</div>
          <div>Letter of Credit</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Revolving Credit Facility

</div>
          <div>Letter of Credit</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Revolving Credit Facility

</div>
          <div>Swing Line Facility</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Term Loan Facility</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012

</div>
          <div>2010 Credit Agreement

</div>
          <div>Term Loan Facility</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Term Loan Facility

</div>
          <div>First Four Quarterly Installments</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Term Loan Facility

</div>
          <div>Subsequent Eight Quarterly Installments</div>
        </th>
        <th class="th">
          <div>Aug. 19, 2010

</div>
          <div>2010 Credit Agreement

</div>
          <div>Term Loan Facility

</div>
          <div>Next Subsequent Three Quarterly Installments</div>
        </th>
        <th class="th">
          <div>Oct. 05, 2010

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020

</div>
          <div>LegalMatter</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020</div>
        </th>
        <th class="th">
          <div>Oct. 05, 2010

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020

</div>
          <div>Minimum

</div>
          <div>Point</div>
        </th>
        <th class="th">
          <div>Oct. 05, 2010

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020

</div>
          <div>Maximum</div>
        </th>
        <th class="th">
          <div>Oct. 05, 2010

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020

</div>
          <div>Semi Annual Payment, First Payment</div>
        </th>
        <th class="th">
          <div>Oct. 05, 2010

</div>
          <div>Series A, Senior Notes, 4.97 Percent, Due October 5th 2020

</div>
          <div>Semi Annual Payment, Second Payment</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtDisclosureLineItems', window );"><strong>Debt Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity', window );">Current aggregate borrowing capacity</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">$ 400,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">$ 150,000,000<span></span></td>
        <td class="nump">$ 40,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_LineOfCreditFacilityAdditionalBorrowingCapacity', window );">Aggregate amount by which the revolving credit facility can be increased</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">100,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentMaturityDate', window );">Debt maturity date</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">Aug. 19,
         2013<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">Aug. 19,
         2014<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">Oct.
        05,
         2020<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity', window );">Credit facility, maximum borrowing capacity</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">500,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCredit', window );">Line of credit</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">100,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms', window );">Line of credit facility, frequency of payment and payment terms</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">The term loan facility is payable in quarterly principal  installments commencing November 19, 2010. The installment amounts vary from  1.25% of the original principal amount for each of the first four quarterly  installments, 2.50% of the original principal amount for each of the subsequent  eight quarterly installments, 5.00% of the original principal amount for the  next subsequent three quarterly installments, with the remainder becoming due at  maturity.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityFrequencyOfPayments', window );">Line of credit facility, frequency of payments</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">Quarterly<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentDateOfFirstRequiredPayment', window );">Commencement date of principal payments</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">2010-11-19<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PrincipalPaymentsPercentage', window );">Installment amounts percentage of the original principal amount</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">1.25%<span></span></td>
        <td class="nump">2.50%<span></span></td>
        <td class="nump">5.00%<span></span></td>
        <td class="nump">5.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ApplicableMarginRate', window );">Applicable margin</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">2.75%<span></span></td>
        <td class="nump">2.75%<span></span></td>
        <td class="nump">3.75%<span></span></td>
        <td class="nump">1.75%<span></span></td>
        <td class="nump">1.75%<span></span></td>
        <td class="nump">2.75%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage', window );">Commitment fee payable to the lenders for the unused portion of the revolving credit facility</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">0.50%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">0.50%<span></span></td>
        <td class="nump">0.75%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityCovenantTerms', window );">Financial covenant description</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">The Company must not permit its debt to capitalization ratio to exceed 45% at any time. The Credit Agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 3.00 to 1.00. The Credit Agreement generally defines the interest coverage ratio as the ratio of earnings before interest, taxes, depreciation and amortization (&#x201C;EBITDA&#x201D;) of the four prior fiscal quarters to interest charges for the same period. The Company was in compliance with these covenants at March 31, 2012.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_NumberOfCovenants', window );">Number of compliance covenants</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">2<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">2<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtToCapitalizationRatio', window );">Debt to capitalization ratio, percentage the Company must not exceed at any time</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">45.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">50.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_InterestCoverageRatio', window );">Interest coverage ratio that the Company must exceed on the last day of the fiscal quarter</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">3.00<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">2.50<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityAmountOutstanding', window );">Line of credit, amount outstanding</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">109,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">90,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd', window );">Line of credit, interest rate</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">3.28%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">3.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Unfunded letters of credit, amount outstanding</a></td>
        <td class="nump">40,600,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">40,600,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity', window );">Line of credit, available borrowing capacity</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">251,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentIssuanceDate', window );">Notes issuance date</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">2010-10-05<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Long-term debt, aggregate principal amount</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">300,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Debt interest rate</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">4.97%<span></span></td>
        <td class="nump">4.97%<span></span></td>
        <td class="nump">4.97%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFairValue', window );">Long-term debt, fair value</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">323,000,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtInstrumentInterestRatePaymentDate', window );">Interest pay date</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">April 5<span></span></td>
        <td class="text">October 5<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtInstrumentPrepaymentTerms', window );">Description of the prepayment terms</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">The Notes are prepayable at the Company's option, in whole or in part, provided that in the case of a partial prepayment, prepayment must be in an amount not less than 5% of the aggregate principal amount of the Notes then outstanding, at any time and from time to time at 100% of the principal amount prepaid, plus accrued and unpaid interest to the prepayment date<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtRedemptionPricePercentOfPrincipalAmount', window );">Prepayment terms, percent of principal before accrued and unpaid interest and "make-whole" premium</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">100.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DebtInstrumentAcceptanceTerms', window );">Description of the acceptance terms</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">If any offer to prepay is accepted, the purchase price of each prepaid Note is 100% of the principal amount thereof, plus accrued and unpaid interest thereon to the prepayment date.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PercentageOfRepurchasePriceToPrincipalDebtAmount', window );">Acceptance terms, percent of principal before accrued and unpaid interest</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">100.00%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentCovenantDescription', window );">Financial covenant description</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">The Company must not permit its debt to capitalization ratio to exceed 50% at any time. The note purchase agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 2.50 to 1.00. The note purchase agreement generally defines the interest coverage ratio as the ratio for the four prior quarters of EBITDA to interest charges for that same period. The Company was in compliance with these covenants at March 31, 2012.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsOfDebtIssuanceCosts', window );">Debt issuance costs</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">10,800,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AmortizationOfFinancingCosts', window );">Interest expense related to amortization of debt issuance costs</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">$ 604,000<span></span></td>
        <td class="nump">$ 604,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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    <div style="display: none;">
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Applicable Margin Rate</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_ApplicableMarginRate</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
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                    <td><strong> Data Type:</strong></td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td>instant</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtDisclosureLineItems</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DebtInstrumentAcceptanceTerms">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Debt Instrument, Acceptance Terms</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtInstrumentAcceptanceTerms</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DebtInstrumentInterestRatePaymentDate">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Debt Instrument, Interest Rate, Payment Date</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtInstrumentInterestRatePaymentDate</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DebtInstrumentPrepaymentTerms">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Debt Instrument, Prepayment Terms</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtInstrumentPrepaymentTerms</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DebtRedemptionPricePercentOfPrincipalAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Debt Redemption Price Percent Of Principal Amount</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtRedemptionPricePercentOfPrincipalAmount</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DebtToCapitalizationRatio">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Debt To Capitalization Ratio</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DebtToCapitalizationRatio</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_InterestCoverageRatio">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Interest Coverage ratio</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_InterestCoverageRatio</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:decimalItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_LineOfCreditFacilityAdditionalBorrowingCapacity">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Line of Credit Facility, Additional Borrowing Capacity</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_LineOfCreditFacilityAdditionalBorrowingCapacity</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_NumberOfCovenants">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of Covenants</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_NumberOfCovenants</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:integerItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_PercentageOfRepurchasePriceToPrincipalDebtAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Percentage of repurchase price to principal debt amount</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_PercentageOfRepurchasePriceToPrincipalDebtAmount</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_PrincipalPaymentsPercentage">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Principal payments, percentage</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_PrincipalPaymentsPercentage</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AmortizationOfFinancingCosts">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate. Alternate captions include Noncash Interest Expense.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.8)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 8<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 8<br><br> -Article 9<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AmortizationOfFinancingCosts</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentCovenantDescription">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 470<br><br> -Section 50<br><br> -Paragraph 3<br><br> -Subparagraph (g)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6479336&amp;loc=d3e64711-112823<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentCovenantDescription</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentDateOfFirstRequiredPayment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Date that the debt agreement requires the first payment to be made, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 470<br><br> -Section 50<br><br> -Paragraph 3<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6479336&amp;loc=d3e64711-112823<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentDateOfFirstRequiredPayment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>us-types:dateStringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFaceAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 21<br><br> -Paragraph 16, 20<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 835<br><br> -SubTopic 30<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6451184&amp;loc=d3e28551-108399<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 835<br><br> -SubTopic 30<br><br> -Section 55<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6584090&amp;loc=d3e28878-108400<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentFaceAmount</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFairValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 10<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13433-108611<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 12<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13476-108611<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentFairValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentInterestRateStatedPercentage">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Interest rate stated in the contractual debt agreement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22(a)(1))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentInterestRateStatedPercentage</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentIssuanceDate">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Date when the debt instrument was issued, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22(a))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentIssuanceDate</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>us-types:dateStringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentMaturityDate">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22(a)(2))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentMaturityDate</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:dateItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LettersOfCreditOutstandingAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LettersOfCreditOutstandingAmount</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCredit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 20, 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-03.16)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-03.16)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCredit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityAmountOutstanding">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount borrowed under the credit facility as of the balance sheet date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityAmountOutstanding</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityCovenantTerms">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Description of the conditions for borrowing under the credit facility including the nature of any restrictions.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityCovenantTerms</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity</nobr></td>
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                    <td>us-gaap_</td>
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                    <td>xbrli:monetaryItemType</td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Description of the frequency of the required periodic payments of interest, principal, or both, and the amount, if set, or a description of a formula upon which payment is based.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityFrequencyOfPayments</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The effective interest rate at the end of the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                    <td>instant</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19, 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(b),22(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
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                    <td>credit</td>
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                    <td>instant</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>num:percentItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfDebtIssuanceCosts">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 95-13<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -Subparagraph (e)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3291-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PaymentsOfDebtIssuanceCosts</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAYAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Business Segments - Revenues (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
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      <tr>
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          <div>Mar. 31, 2012</div>
        </th>
        <th class="th" colspan="2">
          <div>Mar. 31, 2011</div>
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        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">$ 14,717<span></span></td>
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        <td class="nump">$ 10,387<span></span></td>
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        <td class="nump">745,921<span></span></td>
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        <td class="nump">567,404<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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          <div class="a">Operating Segments</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingRevenueReconcilingItemLineItems', window );"><strong>Segment Reporting, Revenue Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="nump">14,717<span></span></td>
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        <td class="nump">10,387<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="nump">747,142<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">568,071<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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      <tr class="rh">
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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        <td class="nump">490,703<span></span></td>
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        <td class="nump">378,025<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
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      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
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        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingRevenueReconcilingItemLineItems', window );"><strong>Segment Reporting, Revenue Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueOilAndGasServices', window );">Oil and gas services</a></td>
        <td class="nump">241,722<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">179,659<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Intersegment Elimination</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingRevenueReconcilingItemLineItems', window );"><strong>Segment Reporting, Revenue Reconciling Item [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SalesRevenueNet', window );">Revenues</a></td>
        <td class="num">$ (1,221)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
        <td class="num">$ (667)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
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      <tr>
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              <td style="vertical-align: top;" valign="top">[1]</td>
              <td style="vertical-align: top;" valign="top">Consists of contract drilling intercompany revenues for drilling services provided to the oil and natural gas exploration and production segment.</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Revenue from the sale of oil and gas during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 23<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e62136-109447<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e62246-109447<br><br><br><br></p>
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                <p>Revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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                <p>Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Long Term Debt (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
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<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Presented below
is a schedule of the principal repayment requirements of long-term
debt by fiscal year as of March&#xA0;31, 2012 (in
thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
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<tr>
<td width="87%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Year ending
December&#xA0;31,</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2013</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">121,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2014</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">70,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2015</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2016</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Thereafter</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Total</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">498,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
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<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0E5AAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Commitments, Contingencies and Other Matters - Additional Information (Detail) (USD $)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CommitmentsAndContingenciesDisclosureLineItems', window );"><strong>Commitments and Contingencies Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Letters of credit, collateral for retrospective premiums and retained losses</a></td>
        <td class="nump">$ 40,600,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SignificantPurchaseCommitmentRemainingMinimumAmountCommitted', window );">Commitments to purchase major equipment</a></td>
        <td class="nump">338,000,000<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount', window );">Current obligation</a></td>
        <td class="nump">37,400,000<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear', window );">Obligation for remainder of the year</a></td>
        <td class="nump">8,400,000<span></span></td>
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      <tr class="rh">
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          <div class="a">Non Revolving Senior Secured Term Loan</div>
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        <td class="text">&#xA0;<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CommitmentsAndContingenciesDisclosureLineItems', window );"><strong>Commitments and Contingencies Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_AdvancesToNonAffiliates', window );">Advance to non-affiliates</a></td>
        <td class="nump">12,000,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_NotesReceivableInterestRate', window );">Notes receivable interest rate</a></td>
        <td class="nump">5.00%<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NotesAndLoansReceivableGrossCurrent', window );">Notes receivable</a></td>
        <td class="nump">5,100,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromCollectionOfNotesReceivable', window );">Repayment of notes receivable</a></td>
        <td class="nump">145,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NotesAndLoansReceivableNetCurrent', window );">Notes receivable outstanding</a></td>
        <td class="nump">$ 4,900,000<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Advances to Non Affiliates</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                <p>Notes Receivable Interest Rate</p>
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                <p>No definition available.</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) within one year of the balance sheet date or the normal operating cycle, whichever is longer. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 310<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 9<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6375948&amp;loc=d3e4531-111522<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.3(a),(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 3<br><br> -Subparagraph a<br><br> -Article 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 1<br><br> -Subparagraph (c),(e)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Section A<br><br> -Paragraph 4<br><br> -Chapter 3<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 3<br><br> -Subparagraph b<br><br> -Article 5<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 310<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 9<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6375948&amp;loc=d3e4531-111522<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 3<br><br> -Article 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Section A<br><br> -Paragraph 4<br><br> -Chapter 3<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.3)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 12<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3179-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 15<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 16<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Investing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6516133<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProceedsFromCollectionOfNotesReceivable</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The floor amount as of the balance sheet date that the entity must expend to satisfy the terms of disclosed arrangements (excluding long-term commitments) in which the entity has agreed to expend funds to procure goods or services from one or more suppliers, other than under a long-term purchase commitment or an unconditional purchase obligation.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.25)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-03.17)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 25<br><br> -Article 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-03.(a)(19))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 03<br><br> -Paragraph 17<br><br> -Article 9<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 7<br><br> -Section 03<br><br> -Paragraph 19<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_SignificantPurchaseCommitmentRemainingMinimumAmountCommitted</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation as of the balance sheet date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 7<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 440<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 4<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6394976&amp;loc=d3e25336-109308<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount</nobr></td>
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                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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<html>
  <head>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Basis of Consolidation and Presentation (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock', window );">Calculation of Income Per Share From Continuing and Discontinued Operations</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">The following
table presents information necessary to calculate income from
continuing operations per share, loss from discontinued operations
per share and net income per share for the three months ended
March&#xA0;31, 2012 and 2011 as well as potentially dilutive
securities excluded from the weighted average number of diluted
common shares outstanding, as their inclusion would have been
anti-dilutive (in thousands, except per share amounts):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%" align="center">
<tr>
<td width="84%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>BASIC
EPS:</b></font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">97,274</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,619</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjust for income
attributed to holders of non-vested restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(742</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(501</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations, net</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(367</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjust for loss attributed
to holders of non-vested restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(364</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,625</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic income from
continuing operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic loss from
discontinued operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic net income per common
share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>DILUTED
EPS:</b></font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Add incremental earnings
related to potential common shares</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjusted income from
continuing operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,625</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Add dilutive effect of
potential common shares</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">776</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,531</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
diluted common shares outstanding</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">155,401</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,653</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted income from
continuing operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted loss from
discontinued operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted net income per
common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Potentially dilutive
securities excluded as anti-dilutive</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,229</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">725</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of an entity's basic and diluted earnings per share calculations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock</nobr></td>
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  <head>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EFQAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Goodwill and Intangible Assets - Additional Information (Detail) (USD $)<br></strong></div>
        </th>
        <th class="th" colspan="1">1 Months Ended</th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Oct. 31, 2010</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012

</div>
          <div>Year</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_GoodwillAndIntangibleAssetsDisclosureLineItems', window );"><strong>Goodwill and Intangible Assets Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss', window );">Goodwill impairment loss</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">$ 0<span></span></td>
        <td class="nump">$ 0<span></span></td>
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      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Non-compete agreement</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_GoodwillAndIntangibleAssetsDisclosureLineItems', window );"><strong>Goodwill and Intangible Assets Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ContractTerm', window );">Contract term</a></td>
        <td class="text">3 years<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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      <tr class="ro">
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        <td class="nump">117,000<span></span></td>
        <td class="nump">117,000<span></span></td>
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      <tr class="rh">
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          <div class="a">Customer relationships</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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      <tr class="re">
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsUsefulLife', window );">Amortization period (in years)</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">7<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
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                <p>Contract Term</p>
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                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (a)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16323-109275<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph a(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6388964&amp;loc=d3e16225-109274<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The useful life of all finite-lived intangible assets.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 12, 13, 14<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 35<br><br> -Paragraph 6<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6904245&amp;loc=d3e15372-109273<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                <p>The accumulated impairment losses related to goodwill as of the balance sheet date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a,h)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13816-109267<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EJCAE">
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          <div style="width: 200px;"><strong>Restricted Stock Unit Activity (Detail) (Restricted Stock Units (RSUs), USD $)<br></strong></div>
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          <div>Mar. 31, 2012</div>
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        <td class="text">&nbsp;&nbsp;<span></span></td>
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        <td class="text">&nbsp;&nbsp;<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(e)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(3)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(e)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(3)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
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                    <td>na</td>
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                    <td>duration</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(i)-(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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          </td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(i)-(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
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                    <td>na</td>
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                    <td>duration</td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0ELFAC">
      <tr>
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          <div style="width: 200px;"><strong>Discontinued Operations - Additional Information (Detail) (USD $)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
        <th class="th" colspan="2">1 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
        <th class="th">
          <div>Jan. 27, 2011

</div>
          <div>Universal Wireline, Inc.</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2010

</div>
          <div>Universal Wireline, Inc.</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems', window );"><strong>Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">$ 25,500,000<span></span></td>
        <td class="nump">$ 25,500,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf', window );">Impairment of the assets to be disposed</a></td>
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        <td class="nump">$ 2,200,000<span></span></td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents cash provided by or used in the investing activities of the entity's discontinued operations during the period. This element is only used by those entities that separately report cash flows attributable to discontinued operations. If using this element, it is an indication that the cash flows of the entity which are detailed in reconciling to cash provided by or used in investing activities reflect only cash flows attributable to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br></p>
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                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
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                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 27, 28, 29, 30<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6390789&amp;loc=d3e2611-110228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><nobr>us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf</nobr></td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAPAC">
      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>Summary of Accrued Expenses (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ScheduleOfAccruedLiabilitiesLineItems', window );"><strong>Schedule of Accrued Liabilities [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_AccruedSalariesWagesPayrollTaxesAndBenefitsCurrent', window );">Salaries, wages, payroll taxes and benefits</a></td>
        <td class="nump">$ 38,601<span></span></td>
        <td class="nump">$ 58,692<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WorkersCompensationLiabilityCurrent', window );">Workers' compensation liability</a></td>
        <td class="nump">65,778<span></span></td>
        <td class="nump">66,121<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TaxesPayableCurrent', window );">Property, sales, use and other taxes</a></td>
        <td class="nump">12,591<span></span></td>
        <td class="nump">11,850<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedInsuranceCurrent', window );">Insurance, other than workers' compensation</a></td>
        <td class="nump">7,988<span></span></td>
        <td class="nump">6,012<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestPayableCurrent', window );">Accrued interest payable</a></td>
        <td class="nump">8,429<span></span></td>
        <td class="nump">4,937<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredRevenueCurrent', window );">Deferred revenue-current</a></td>
        <td class="nump">6,944<span></span></td>
        <td class="nump">7,229<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedEmployeeBenefitsCurrent', window );">2009 Performance Unit Awards</a></td>
        <td class="nump">1,719<span></span></td>
        <td class="nump">3,640<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAccruedLiabilitiesCurrent', window );">Other</a></td>
        <td class="nump">10,392<span></span></td>
        <td class="nump">6,148<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesCurrent', window );">Accrued expenses</a></td>
        <td class="nump">$ 152,442<span></span></td>
        <td class="nump">$ 164,629<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
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        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Accrued Salaries, Wages, Payroll Taxes and Benefits, Current</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedEmployeeBenefitsCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6935-107765<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 7<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 6<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6911-107765<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Current Liabilities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6509677<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedEmployeeBenefitsCurrent</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedInsuranceCurrent">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6935-107765<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 7<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 6<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6911-107765<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Current Liabilities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6509677<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedInsuranceCurrent</nobr></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedLiabilitiesCurrent</nobr></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 8<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6935-107765<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 7, 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 13<br><br> -Section A<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 605<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 13.A.4(a).Q1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6600647&amp;loc=d3e214044-122780<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><nobr>us-gaap_DeferredRevenueCurrent</nobr></td>
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                    <td><strong> Balance Type:</strong></td>
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                <p>Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6935-107765<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 7<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 9<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e7018-107765<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Current Liabilities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6509677<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
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                    <td><nobr>us-gaap_InterestPayableCurrent</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td><strong> Balance Type:</strong></td>
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                <p>Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6935-107765<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 3<br><br> -Section A<br><br> -Paragraph 7<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 6<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6911-107765<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Current Liabilities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6509677<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 9<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e7018-107765<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                <p>Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19,20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                <p>Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.20)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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          <div style="width: 200px;"><strong>Estimated Fair Value of Outstanding Debt Balances (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
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      <tr class="rh">
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          <div class="a">Estimate of Fair Value, Fair Value Disclosure</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems', window );"><strong>Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFairValue', window );">Fair value of Debt</a></td>
        <td class="nump">521,349<span></span></td>
        <td class="nump">518,442<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Estimate of Fair Value, Fair Value Disclosure | Revolving Credit Facility</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems', window );"><strong>Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFairValue', window );">Fair value of Debt</a></td>
        <td class="nump">108,500<span></span></td>
        <td class="nump">110,000<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Estimate of Fair Value, Fair Value Disclosure | Term Loan Facility</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems', window );"><strong>Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFairValue', window );">Fair value of Debt</a></td>
        <td class="nump">90,000<span></span></td>
        <td class="nump">92,500<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Estimate of Fair Value, Fair Value Disclosure | Senior Notes</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems', window );"><strong>Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DebtInstrumentFairValue', window );">Fair value of Debt</a></td>
        <td class="nump">$ 322,849<span></span></td>
        <td class="nump">$ 315,942<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFairValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 10<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13433-108611<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 12<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13476-108611<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentFairValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                  <tr>
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                    <td>na</td>
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                    <td>duration</td>
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<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0ECHAG">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Business Segments - Income (loss) from Continuing Operations Before Income Taxes (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="4">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th" colspan="2">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th" colspan="2">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="nump">$ 157,664<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 117,547<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment', window );">Net gain on asset disposals</a></td>
        <td class="nump">2,400<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
        <td class="nump">1,604<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentIncomeInterest', window );">Interest income</a></td>
        <td class="nump">54<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">43<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestExpense', window );">Interest expense</a></td>
        <td class="num">(4,582)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(3,889)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNonoperatingIncome', window );">Other</a></td>
        <td class="nump">55<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">119<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments', window );">Income from continuing operations before income taxes</a></td>
        <td class="nump">153,191<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">113,820<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Operating Segments</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="nump">166,076<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">126,715<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Operating Segments | Contract Drilling</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="nump">111,771<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">80,519<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Operating Segments | Pressure Pumping</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="nump">46,787<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">41,378<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Operating Segments | Oil and Natural Gas</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="nump">7,518<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">4,818<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Corporate and other</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems', window );"><strong>Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss)</a></td>
        <td class="num">$ (10,812)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">$ (10,772)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr>
        <td colspan="5"></td>
      </tr>
      <tr>
        <td colspan="5">
          <table class="outerFootnotes" width="100%">
            <tr class="outerFootnote">
              <td style="vertical-align: top;" valign="top">[1]</td>
              <td style="vertical-align: top;" valign="top">Net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments.</td>
            </tr>
          </table>
        </td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_GainLossOnSaleOfPropertyPlantEquipment</nobr></td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 4<br><br> -Section 08<br><br> -Paragraph h<br><br> -Subparagraph 1(i)<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h)(1)(i))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cost of borrowed funds accounted for as interest that was charged against earnings during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 835<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6450988&amp;loc=d3e26243-108391<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.9)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 34<br><br> -Paragraph 21<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 9<br><br> -Article 9<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher OTS<br><br> -Name Federal Regulation (FR)<br><br> -Number Title 12<br><br> -Chapter V<br><br> -Section 563c.102<br><br> -Paragraph 9<br><br> -Subsection II<br><br> -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy.  It will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 7<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 115<br><br> -Paragraph 14<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.7(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_InvestmentIncomeInterest</nobr></td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net result for the period of deducting operating expenses from operating revenues.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate amount of other income amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 7<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Audit and Accounting Guide (AAG)<br><br> -Number AAG-BRD<br><br> -Chapter 4<br><br> -Paragraph 80<br><br> -Subparagraph Exhibit 4-4<br><br> -IssueDate 2006-05-01<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
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                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems</nobr></td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EJF">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestPaidCapitalized', window );">Interest expense, capitalized interest</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of cash paid during the current period for interest that is capitalized.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 25<br><br> -Subparagraph (e)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3536-108585<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4297-108586<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EPLAC">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Fair Values of Financial Instruments - Additional Information (Detail) (Series A, Senior Notes, 4.97 Percent, Due October 5th 2020)<br></strong></div>
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          <div>Mar. 31, 2012</div>
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          <div>Oct. 05, 2010</div>
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          <div class="a">Series A, Senior Notes, 4.97 Percent, Due October 5th 2020</div>
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        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2', window );">Current market rates used in measuring fair value</a></td>
        <td class="nump">3.91%<span></span></td>
        <td class="nump">4.07%<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Minimum Percentage of Fair Value Transactions Corroborated Using Observable Market Inputs Required for Level 2</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_MinimumPercentageOfFairValueTransactionsCorroboratedUsingObservableMarketInputsRequiredForLevel2</nobr></td>
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                    <td>pten_</td>
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                    <td>num:percentItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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              </div>
            </div>
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        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentInterestRateStatedPercentage">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Interest rate stated in the contractual debt agreement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22(a)(1))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DebtInstrumentInterestRateStatedPercentage</nobr></td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems</nobr></td>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>29
<FILENAME>Financial_Report.xls
<DESCRIPTION>IDEA: XBRL DOCUMENT
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<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EG6BG">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Stock-based Compensation - Additional Information (Detail) (USD $)<br></strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2009</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">The performance period for the  2009 Performance Units was the period from April 1, 2009 through March 31, 2012.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription', window );">Award description</a></td>
        <td class="text">Generally,  the recipients would receive a base payment if the Company's total shareholder  return was positive and, when compared to the peer group, was at or above the  25th percentile but less than the 50th percentile, two times the base if at or  above the 50th percentile but less than the 75th percentile, and four times the  base if at the 75th percentile or higher.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PerformanceAwardBasePayment', window );">Base payment</a></td>
        <td class="nump">$ 1,700,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedBonusesCurrentAndNoncurrent', window );">Pro-rated obligation</a></td>
        <td class="nump">1,700,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpense', window );">Compensation expense</a></td>
        <td class="nump">1,900,000<span></span></td>
        <td class="nump">1,200,000<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2009 | Minimum</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">April 1, 2009<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2009 | Maximum</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">March 31, 2012<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2010</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">The performance period for  the 2010 Performance Units is the period from April 1, 2010 through March 31,  2013, but can extend through March 31, 2015 in certain circumstances.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription', window );">Award description</a></td>
        <td class="text">Generally, the recipients will receive a base number of  shares if the Company's total shareholder return is positive and, when compared  to the peer group, is at the 25th percentile, two times the base if at the 50th  percentile, and four times the base if at the 75th percentile or higher. The  grant of shares when achievement is between the 25th and 75th percentile will be  determined on a pro-rata basis.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpense', window );">Compensation expense</a></td>
        <td class="nump">260,000<span></span></td>
        <td class="nump">260,000<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PerformanceAwardBaseNumberOfShares', window );">Base number of shares</a></td>
        <td class="nump">89,375<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards', window );">Grant date fair value</a></td>
        <td class="nump">3,100,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2010 | Minimum</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">April 1, 2010<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2010 | Maximum</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">March 31,  2013<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2010 | Maximum | Certain Circumstances</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">March 31, 2015<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2011</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod', window );">Performance period</a></td>
        <td class="text">The  performance period for the 2011 Performance Units is the period from April 1,  2011 through March 31, 2014, but can extend through March 31, 2016 in certain  circumstances.<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpense', window );">Compensation expense</a></td>
        <td class="nump">464,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PerformanceAwardBaseNumberOfShares', window );">Base number of shares</a></td>
        <td class="nump">72,188<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
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        <td class="text">&#xA0;<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">April&#xA0;1, 2011<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2011 | Maximum</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">March 31, 2014<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Performance Unit Awards 2011 | Maximum | Certain Circumstances</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems', window );"><strong>Compensation Related Costs Share Based Payments Disclosure [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">March&#xA0;31, 2016<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
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                    <td><strong> Name:</strong></td>
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                <p>Performance Award, Base Number of Shares</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Performance Award, Base Payment</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Share Based Compensation Arrangement By Share Based Payment Award Grant Date Fair Value Of Awards</p>
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                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                <p>Share Based Compensation Arrangement by Share Based Payment Award, Performance Period</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td>us-types:durationStringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td>duration</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 9<br><br> -Section 03<br><br> -Paragraph 15<br><br> -Subparagraph 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-03.15(5))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-03.15(a))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 7<br><br> -Section 03<br><br> -Paragraph 15<br><br> -Subparagraph a<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedBonusesCurrentAndNoncurrent</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllocatedShareBasedCompensationExpense">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5047-113901<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (h)(1)(i)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph g(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 14.F)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6793087&amp;loc=d3e301413-122809<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 14<br><br> -Section F<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph 64<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AllocatedShareBasedCompensationExpense</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph 64, 65<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5047-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td>xbrli:stringItemType</td>
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                    <td>duration</td>
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<SEQUENCE>31
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<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Business Segments (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock', window );">Business Segments - Financial Information</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Separate
financial data for each of our business segments is provided in the
table below (in thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="78%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenues:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">490,703</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">378,025</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">241,722</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">179,659</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14,717</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10,387</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total segment
revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">747,142</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">568,071</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Elimination of intercompany
revenues (a)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,221</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(667</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">745,921</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">567,404</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income before income
taxes:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">111,771</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">80,519</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">46,787</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">41,378</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,518</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,818</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">166,076</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">126,715</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and
other</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(10,812</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(10,772</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Net gain on asset disposals
(b)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2,400</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,604</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest income</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">54</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">43</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest expense</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4,582</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(3,889</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">55</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">119</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations before income taxes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,191</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">113,820</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="74%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable
assets:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,384,088</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,252,116</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">789,213</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">748,643</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">44,990</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and other
(c)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">142,413</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">176,152</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total assets</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,363,832</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,221,901</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="BORDER-BOTTOM: #000000 0.5pt solid; LINE-HEIGHT: 8px; MARGIN-TOP: 0px; WIDTH: 10%; MARGIN-BOTTOM: 2px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(a)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Consists of contract
drilling intercompany revenues for drilling services provided to
the oil and natural gas exploration and production
segment.</font></td>
</tr>
</table>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(b)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Net gains or losses
associated with the disposal of assets relate to corporate strategy
decisions of the executive management group. Accordingly, the
related gains or losses have been separately presented and excluded
from the results of specific segments.</font></td>
</tr>
</table>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(c)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and other assets
primarily include cash on hand, income taxes receivable and certain
deferred tax assets.</font></td>
</tr>
</table>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 21<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8721-108599<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 22<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8736-108599<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 131<br><br> -Paragraph 27, 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 30<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8906-108599<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13816-109267<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 25<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8813-108599<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <head>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Property and Equipment (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentTextBlock', window );">Property and Equipment</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Property and
equipment consisted of the following at March&#xA0;31, 2012 and
December&#xA0;31, 2011 (in thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="72%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Equipment</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,899,102</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,730,925</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural gas
properties</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">137,548</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">131,812</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Buildings</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">64,426</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">64,090</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Land</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,467</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,467</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5,112,543</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,938,294</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less accumulated
depreciation and depletion</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,804,280</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,771,028</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Property and equipment,
net</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,308,263</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 13<br><br> -Subparagraph b<br><br> -Article 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EOFAC">
      <tr>
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          <div style="width: 200px;"><strong>Schedule of Principal Repayment Requirements of Long Term Debt (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems', window );"><strong>Long Term Debt Maturities Repayments Of Principal [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths', window );">2012</a></td>
        <td class="nump">$ 7,500<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo', window );">2013</a></td>
        <td class="nump">121,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree', window );">2014</a></td>
        <td class="nump">70,000<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour', window );">2015</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive', window );">2016</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive', window );">Thereafter</a></td>
        <td class="nump">300,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebt', window );">Total</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-03.16)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 7<br><br> -Section 03<br><br> -Paragraph 16<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 210<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-03.16)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 03<br><br> -Paragraph 16<br><br> -Article 9<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20, 22<br><br> -Article 5<br><br><br><br></p>
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                <p>Amount of long-term debt maturities after year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 10<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 470<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6802200&amp;loc=d3e1835-112601<br><br><br><br></p>
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                <p>Amount of long-term debt maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 10<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 470<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6802200&amp;loc=d3e1835-112601<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of long-term debt maturing in year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 10<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 470<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6802200&amp;loc=d3e1835-112601<br><br><br><br></p>
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                <p>Amount of long-term debt maturing in year four following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of long-term debt maturing in year three following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 10<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 470<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6802200&amp;loc=d3e1835-112601<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree</nobr></td>
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        <tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of long-term debt maturing in year two following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 47<br><br> -Paragraph 10<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 470<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6802200&amp;loc=d3e1835-112601<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><nobr>us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo</nobr></td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EALAC">
      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>Property and Equipment (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentLineItems', window );"><strong>Property, Plant and Equipment [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FixturesAndEquipmentGross', window );">Equipment</a></td>
        <td class="nump">$ 4,899,102<span></span></td>
        <td class="nump">$ 4,730,925<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OilAndGasPropertySuccessfulEffortMethodGross', window );">Oil and natural gas properties</a></td>
        <td class="nump">137,548<span></span></td>
        <td class="nump">131,812<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BuildingsAndImprovementsGross', window );">Buildings</a></td>
        <td class="nump">64,426<span></span></td>
        <td class="nump">64,090<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Land', window );">Land</a></td>
        <td class="nump">11,467<span></span></td>
        <td class="nump">11,467<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Property, Plant and Equipment, Gross, Total</a></td>
        <td class="nump">5,112,543<span></span></td>
        <td class="nump">4,938,294<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment', window );">Less accumulated depreciation and depletion</a></td>
        <td class="num">(1,804,280)<span></span></td>
        <td class="num">(1,771,028)<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentNet', window );">Property and equipment, net</a></td>
        <td class="nump">$ 3,308,263<span></span></td>
        <td class="nump">$ 3,167,266<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.14)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 14<br><br> -Article 5<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BuildingsAndImprovementsGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 4<br><br> -Subparagraph (f)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6812-107765<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_BuildingsAndImprovementsGross</nobr></td>
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                    <td>instant</td>
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          </td>
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      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FixturesAndEquipmentGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Gross amount of fixtures and equipment as of the date of the statement of financial position. Fixtures may include and consist of: machinery, equipment, engines, boilers, incinerators, installed building materials; systems and equipment for the purpose of supplying or distributing heating, cooling, electricity, gas, water, air, or light; antennas, cable, wiring and conduits used in connection with radio, television, security, fire prevention, or fire detection or otherwise used to carry electronic signals; telephone systems and equipment; elevators and related machinery and equipment; fire detection, prevention and extinguishing systems and apparatus; security and access control systems and apparatus; plumbing systems; water heaters, ranges, stoves, microwave ovens, refrigerators, dishwashers, garbage disposers, washers, dryers and other appliances; light fixtures, awnings, storm windows and storm doors; pictures, screens, blinds, shades, curtains and curtain rods; mirrors; cabinets, paneling, rugs and floor and wall coverings; fences, trees and plants; swimming pools; and such other items as defined by the reporting entity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FixturesAndEquipmentGross</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Land">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 4<br><br> -Subparagraph (e)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6812-107765<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_Land</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OilAndGasPropertySuccessfulEffortMethodGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Oil and Gas properties, gross, carried under the successful effort method.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 13<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e61901-109447<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-10.(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6949603&amp;loc=d3e511914-122862<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OilAndGasPropertySuccessfulEffortMethodGross</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PropertyPlantAndEquipmentLineItems</nobr></td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 7<br><br> -Section 03<br><br> -Paragraph 8<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 13<br><br> -Subparagraph a<br><br> -Article 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -Subparagraph b, c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EPE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Goodwill and Intangible Assets (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfGoodwillTextBlock', window );">Goodwill by Operating Segment</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><i>Goodwill</i>
&#x2014; Goodwill by operating segment as of March&#xA0;31, 2012 and
changes for the three months then ended are as follows (in
thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="84%" align="center">
<tr>
<td width="72%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Contract</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Drilling</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Pressure</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Pumping</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance December&#xA0;31,
2011</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">86,234</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">67,575</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,809</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Changes to
goodwill</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance March&#xA0;31,
2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">86,234</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">67,575</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,809</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock', window );">Gross Carrying Amount and Accumulated Amortization of Intangible Assets</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">The following
table presents the gross carrying amount and accumulated
amortization of intangible assets as of March&#xA0;31, 2012 (in
thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="62%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gross<br />
Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amount</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Accumulated</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amortization</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Net&#xA0;Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amount</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-compete
agreement</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,400</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(700</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">700</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Customer
relationships</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(5,463</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20,037</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total intangible
assets</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">26,900</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(6,163</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20,737</font></td>
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<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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                <p>Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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                <p>Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill.</p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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          <div style="width: 200px;"><strong>Accrued Expenses (Tables)<br></strong></div>
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        <th class="th" colspan="1">3 Months Ended</th>
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          <div>Mar. 31, 2012</div>
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<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Accrued
expenses consisted of the following at March&#xA0;31, 2012 and
December&#xA0;31, 2011 (in thousands):</font></p>
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&#xA0;</p>
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<td></td>
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<td valign="bottom" width="6%"></td>
<td></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Salaries, wages, payroll
taxes and benefits</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">38,601</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58,692</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Workers&#x2019; compensation
liability</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">65,778</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">66,121</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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other taxes</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12,591</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,850</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Insurance, other than
workers&#x2019; compensation</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,988</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,012</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Accrued interest
payable</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8,429</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,937</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,944</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,229</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">2009 Performance Unit
Awards</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,719</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,640</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
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<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10,392</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,148</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
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<td>&#xA0;</td>
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<tr bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">152,442</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">164,629</font></td>
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<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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                <p>Tabular disclosure of the components of accrued liabilities.</p>
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<FILENAME>R8.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EB6AG">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="4">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th" colspan="2">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th" colspan="2">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Cash flows from operating activities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProfitLoss', window );">Net income</a></td>
        <td class="nump">$ 97,274<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 71,252<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Adjustments to reconcile net income to net cash provided by operating activities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DepreciationDepletionAmortizationAndImpairment', window );">Depreciation, depletion, amortization and impairment</a></td>
        <td class="nump">122,953<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">96,215<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProvisionForDoubtfulAccounts', window );">Provision for bad debts</a></td>
        <td class="nump">1,600<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ExplorationAbandonmentAndImpairmentExpense', window );">Dry holes and abandonments</a></td>
        <td class="nump">56<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">48<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxExpenseBenefit', window );">Deferred income tax expense</a></td>
        <td class="nump">48,407<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">38,619<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensation', window );">Stock-based compensation expense</a></td>
        <td class="nump">5,458<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">4,307<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment', window );">Net gain on asset disposals</a></td>
        <td class="num">(2,400)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
        <td class="num">(1,604)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract', window );"><strong>Changes in operating assets and liabilities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsReceivable', window );">Accounts receivable</a></td>
        <td class="num">(38,109)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(48,152)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncreaseDecreaseInIncomeTaxesReceivableAndPayable', window );">Income taxes receivable/payable</a></td>
        <td class="nump">5,807<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">2,332<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncreaseDecreaseInInventoryAndOtherAssets', window );">Inventory and other assets</a></td>
        <td class="nump">5,332<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">1,205<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsPayable', window );">Accounts payable</a></td>
        <td class="nump">30,418<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">14,053<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccruedLiabilities', window );">Accrued expenses</a></td>
        <td class="num">(12,234)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(5,349)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities', window );">Other liabilities</a></td>
        <td class="num">(897)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">520<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations', window );">Net cash used in operating activities of discontinued operations</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(339)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivities', window );">Net cash provided by operating activities</a></td>
        <td class="nump">263,665<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">173,107<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract', window );"><strong>Cash flows from investing activities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment', window );">Purchase of property and equipment</a></td>
        <td class="num">(263,403)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(182,552)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment', window );">Proceeds from disposal of assets</a></td>
        <td class="nump">4,651<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">1,954<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations', window );">Net cash provided by investing activities of discontinued operations</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">25,500<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivities', window );">Net cash used in investing activities</a></td>
        <td class="num">(258,752)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(155,098)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract', window );"><strong>Cash flows from financing activities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsForRepurchaseOfCommonStock', window );">Purchase of treasury stock</a></td>
        <td class="num">(15)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(20)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsOfDividends', window );">Dividends paid</a></td>
        <td class="num">(7,788)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(7,708)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities', window );">Tax benefit related to stock-based compensation</a></td>
        <td class="nump">166<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">335<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RepaymentsOfLongTermDebt', window );">Repayment of other long-term debt</a></td>
        <td class="num">(2,500)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(1,250)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromLinesOfCredit', window );">Proceeds from borrowing under revolving credit facility</a></td>
        <td class="nump">54,500<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RepaymentsOfLinesOfCredit', window );">Repayment of borrowing under revolving credit facility</a></td>
        <td class="num">(56,000)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromStockOptionsExercised', window );">Proceeds from exercise of stock options</a></td>
        <td class="nump">195<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">399<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivities', window );">Net cash used in financing activities</a></td>
        <td class="num">(11,442)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(8,244)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents', window );">Effect of foreign exchange rate changes on cash</a></td>
        <td class="nump">408<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">293<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease', window );">Net increase (decrease) in cash and cash equivalents</a></td>
        <td class="num">(6,121)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">10,058<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents at beginning of period</a></td>
        <td class="nump">23,946<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">27,612<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents at end of period</a></td>
        <td class="nump">17,825<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">37,670<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CashPaidRefundedDuringPeriodForAbstract', window );"><strong>Net cash paid during the period for:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestPaidNet', window );">Interest, net of capitalized interest of $1,968 in 2012 and $2,043 in 2011</a></td>
        <td class="num">(364)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(1,687)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxesPaidNet', window );">Income taxes</a></td>
        <td class="num">(1,390)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(179)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract', window );"><strong>Supplemental investing and financing information:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1', window );">Net increase in payables for purchase of property and equipment</a></td>
        <td class="nump">2,553<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">17,221<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases', window );">Net (increase) decrease in deposits on equipment purchases</a></td>
        <td class="nump">$ 1,900<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">$ (20,503)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr>
        <td colspan="5"></td>
      </tr>
      <tr>
        <td colspan="5">
          <table class="outerFootnotes" width="100%">
            <tr class="outerFootnote">
              <td style="vertical-align: top;" valign="top">[1]</td>
              <td style="vertical-align: top;" valign="top">Net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments.</td>
            </tr>
          </table>
        </td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_CashPaidRefundedDuringPeriodForAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_CashPaidRefundedDuringPeriodForAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DepreciationDepletionAmortizationAndImpairment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Depreciation, Depletion, Amortization and Impairment</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DepreciationDepletionAmortizationAndImpairment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncreaseDecreaseInIncomeTaxesReceivableAndPayable">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Increase (Decrease) in Income Taxes Receivable and Payable</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncreaseDecreaseInIncomeTaxesReceivableAndPayable</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncreaseDecreaseInInventoryAndOtherAssets">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Increase (Decrease) In Inventory and Other Assets</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncreaseDecreaseInInventoryAndOtherAssets</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Net Decrease (Increase) In Deposits on Equipment Purchases</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_NetDecreaseIncreaseInDepositsOnEquipmentPurchases</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 1<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 7<br><br> -Footnote 1<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3044-108585<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 8, 9<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Cash<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6506951<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 7, 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Cash Equivalents<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6507016<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashAndCashEquivalentsAtCarryingValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The increase (decrease) during the reporting period in cash and cash equivalents. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents cash provided by or used in the investing activities of the entity's discontinued operations during the period. This element is only used by those entities that separately report cash flows attributable to discontinued operations. If using this element, it is an indication that the cash flows of the entity which are detailed in reconciling to cash provided by or used in investing activities reflect only cash flows attributable to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents cash provided by or used in the operating activities of the entity's discontinued operations during the period. This element is only used by those entities that separately report cash flows attributable to discontinued operations. If using this element, it is an indication that the cash flows of the entity which are detailed in reconciling to cash provided by or used in operating activities reflect only cash flows attributable to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxExpenseBenefit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Deferred Tax Expense (or Benefit)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6510177<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Paragraph h<br><br> -Article 4<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 6<br><br> -Section I<br><br> -Subsection 7<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 45<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 289<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 9<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32639-109319<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 6.I.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6889476&amp;loc=d3e330036-122817<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DeferredIncomeTaxExpenseBenefit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The effect of exchange rate changes on cash balances held in foreign currencies.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 25<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 830<br><br> -SubTopic 230<br><br> -Section 45<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6450594&amp;loc=d3e33268-110906<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph i<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 00-15<br><br> -Paragraph 3<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 20<br><br> -Section 55<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6576910&amp;loc=d3e11374-113907<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ExplorationAbandonmentAndImpairmentExpense">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The adjustment to expense previously capitalized costs of drilling exploratory wells when proved reserves are not found or when the entity obtains information that raises substantial doubt about the economic or operational viability of the project.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 360<br><br> -Section 40<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6475089&amp;loc=d3e66625-109467<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 360<br><br> -Section 40<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6475089&amp;loc=d3e66610-109467<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 19<br><br> -Paragraph 27, 28, 40, 41<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 360<br><br> -Section 40<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6475089&amp;loc=d3e66584-109467<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 360<br><br> -Section 35<br><br> -Paragraph 11<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6475018&amp;loc=d3e66150-109466<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ExplorationAbandonmentAndImpairmentExpense</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_GainLossOnSaleOfPropertyPlantEquipment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxesPaidNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 27<br><br> -Subparagraph f<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4297-108586<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeTaxesPaidNet</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsPayable">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncreaseDecreaseInAccountsPayable</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsReceivable">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncreaseDecreaseInAccountsReceivable</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccruedLiabilities">
        <tr>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncreaseDecreaseInAccruedLiabilities</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        </tr>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncreaseDecreaseInOperatingCapitalAbstract</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td>xbrli:stringItemType</td>
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        </tr>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The increase (decrease) during the reporting period in other liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current liabilities, other noncurrent liabilities, or a combination of other current and noncurrent liabilities.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncreaseDecreaseInOtherOperatingLiabilities</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 27<br><br> -Subparagraph e<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4297-108586<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_InterestPaidNet</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivities">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net cash inflow or outflow from financing activity for the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 26<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3574-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInFinancingActivities</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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                </table>
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          </td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivities">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net cash inflow or outflow from investing activity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 26<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3574-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInInvestingActivities</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                    <td>duration</td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract</nobr></td>
                  </tr>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td>xbrli:stringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3521-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 25<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3536-108585<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInOperatingActivities</nobr></td>
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                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4332-108586<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 32<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4313-108586<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4304-108586<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsForRepurchaseOfCommonStock">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow to reacquire common stock during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3291-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 20<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PaymentsForRepurchaseOfCommonStock</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfDividends">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow from the entity's earnings to the shareholders.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3291-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 20<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PaymentsOfDividends</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 13<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3213-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 15<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 17<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Investing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6516133<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PaymentsToAcquirePropertyPlantAndEquipment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromLinesOfCredit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 14<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3255-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 19<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProceedsFromLinesOfCredit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 12<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3179-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 15<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 16<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Investing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6516133<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromStockOptionsExercised">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (j)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph i<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 14<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3255-108585<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 19<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProceedsFromStockOptionsExercised</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProfitLoss">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4J<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591551-111686<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph A1, A4, A5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1A<br><br> -Subparagraph (a),(c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921930&amp;loc=SL4573702-111684<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4K<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591552-111686<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 5<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProfitLoss</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProvisionForDoubtfulAccounts">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.5)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProvisionForDoubtfulAccounts</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RepaymentsOfLinesOfCredit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow to pay off an obligation from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3291-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 20<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_RepaymentsOfLinesOfCredit</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3291-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 18<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 20<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Financing Activities<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6513228<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_RepaymentsOfLongTermDebt</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
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                    <td><strong> Balance Type:</strong></td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensation">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensation</nobr></td>
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<html>
  <head>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Asset Retirement Obligation (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock', window );">Changes to Company's Asset Retirement Obligations</a></td>
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<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">The following
table describes the changes to the Company&#x2019;s asset retirement
obligations during the three months ended March&#xA0;31, 2012 and
2011 (in thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="82%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;
31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance at beginning of
year</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,455</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,063</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liabilities
incurred</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">106</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">65</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liabilities
settled</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(68</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(15</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Accretion
expense</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">37</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">35</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revision in estimated costs
of plugging oil and natural gas wells</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">550</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(2</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Asset retirement obligation
at end of period</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,080</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,146</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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<td>&#xA0;</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Topic 410<br><br> -SubTopic 30<br><br> -Publisher FASB<br><br> -Number <br><br> -Article <br><br> -Subparagraph <br><br> -Name Accounting Standards Codification<br><br> -Paragraph 5<br><br> -Section 50<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6393242&amp;loc=d3e13201-110859<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0E3LAC">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Stock Option Activity (Detail) (USD $)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward', window );"><strong>Underlying Shares</strong></a></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding at beginning of period</a></td>
        <td class="nump">7,081,295<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding at end of period</a></td>
        <td class="nump">7,107,995<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber', window );">Exercisable at end of period</a></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract', window );"><strong>Weighted Average Exercise Price</strong></a></td>
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        <td class="nump">$ 20.73<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice', window );">Granted</a></td>
        <td class="nump">$ 19.98<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice', window );">Exercised</a></td>
        <td class="nump">$ 14.64<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice', window );">Outstanding at end of period</a></td>
        <td class="nump">$ 20.74<span></span></td>
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        <td class="nump">$ 20.52<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(c), d(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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                    <td><strong> Name:</strong></td>
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                <p>The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(e)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Net number of share options (or share units) granted during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(i)-(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(1)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(i)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of share options (or share units) exercised during the current period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28,29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
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<SEQUENCE>40
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<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EHH">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Accrued Expenses - Additional Information (Detail) (USD $)<br>In Millions, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ScheduleOfAccruedLiabilitiesLineItems', window );"><strong>Schedule of Accrued Liabilities [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredRevenueRevenueRecognized', window );">Deferred revenue recognized</a></td>
        <td class="nump">$ 1.8<span></span></td>
        <td class="nump">$ 2.9<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_ScheduleOfAccruedLiabilitiesLineItems">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_ScheduleOfAccruedLiabilitiesLineItems</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredRevenueRevenueRecognized">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 13<br><br> -Section A<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 605<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 13.A.4(a).Q1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6600647&amp;loc=d3e214044-122780<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DeferredRevenueRevenueRecognized</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
    </div>
  </body>
</html>
</TEXT>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>41
<FILENAME>R2.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EQOAG">
      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>CONSOLIDATED BALANCE SHEETS (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrentAbstract', window );"><strong>Current assets:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
        <td class="nump">$ 17,825<span></span></td>
        <td class="nump">$ 23,946<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsReceivableNetCurrent', window );">Accounts receivable, net of allowance for doubtful accounts of $6,540 and $4,887 at March 31, 2012 and December 31, 2011, respectively</a></td>
        <td class="nump">559,548<span></span></td>
        <td class="nump">518,109<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventory</a></td>
        <td class="nump">28,585<span></span></td>
        <td class="nump">31,306<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent', window );">Deferred tax assets, net</a></td>
        <td class="nump">116,543<span></span></td>
        <td class="nump">142,725<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssetsCurrent', window );">Other</a></td>
        <td class="nump">44,903<span></span></td>
        <td class="nump">48,864<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrent', window );">Total current assets</a></td>
        <td class="nump">767,404<span></span></td>
        <td class="nump">764,950<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentNet', window );">Property and equipment, net</a></td>
        <td class="nump">3,308,263<span></span></td>
        <td class="nump">3,167,266<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_GoodwillAndIntangibleAssetsNet', window );">Goodwill and intangible assets</a></td>
        <td class="nump">174,546<span></span></td>
        <td class="nump">175,573<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DepositsOnEquipmentPurchases', window );">Deposits on equipment purchases</a></td>
        <td class="nump">97,643<span></span></td>
        <td class="nump">99,543<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssetsNoncurrent', window );">Other</a></td>
        <td class="nump">15,976<span></span></td>
        <td class="nump">14,569<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Assets', window );">Total assets</a></td>
        <td class="nump">4,363,832<span></span></td>
        <td class="nump">4,221,901<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrentAbstract', window );"><strong>Current liabilities:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts payable</a></td>
        <td class="nump">274,788<span></span></td>
        <td class="nump">241,610<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedIncomeTaxesCurrent', window );">Federal and state income taxes payable</a></td>
        <td class="nump">8,241<span></span></td>
        <td class="nump">2,473<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesCurrent', window );">Accrued expenses</a></td>
        <td class="nump">152,442<span></span></td>
        <td class="nump">164,629<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtCurrent', window );">Current portion of long-term debt</a></td>
        <td class="nump">10,000<span></span></td>
        <td class="nump">10,000<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrent', window );">Total current liabilities</a></td>
        <td class="nump">445,471<span></span></td>
        <td class="nump">418,712<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermLineOfCredit', window );">Borrowings under revolving credit facility</a></td>
        <td class="nump">108,500<span></span></td>
        <td class="nump">110,000<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherLongTermDebtNoncurrent', window );">Other long-term debt</a></td>
        <td class="nump">380,000<span></span></td>
        <td class="nump">382,500<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent', window );">Deferred tax liabilities, net</a></td>
        <td class="nump">808,857<span></span></td>
        <td class="nump">786,632<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherLiabilitiesNoncurrent', window );">Other</a></td>
        <td class="nump">6,529<span></span></td>
        <td class="nump">7,426<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Liabilities', window );">Total liabilities</a></td>
        <td class="nump">1,749,357<span></span></td>
        <td class="nump">1,705,270<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingencies', window );">Commitments and contingencies (see Note 11)</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityAbstract', window );"><strong>Stockholders' equity:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred stock, par value $.01; authorized 1,000,000 shares, no shares issued</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockValue', window );">Common stock, par value $.01; authorized 300,000,000 shares with 183,315,514 and 183,295,350 issued and 155,827,260 and 155,807,779 outstanding at March 31, 2012 and December 31, 2011, respectively</a></td>
        <td class="nump">1,833<span></span></td>
        <td class="nump">1,833<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdditionalPaidInCapital', window );">Additional paid-in capital</a></td>
        <td class="nump">846,550<span></span></td>
        <td class="nump">840,731<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Retained earnings</a></td>
        <td class="nump">2,368,853<span></span></td>
        <td class="nump">2,279,367<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax', window );">Accumulated other comprehensive income</a></td>
        <td class="nump">22,013<span></span></td>
        <td class="nump">19,459<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TreasuryStockValue', window );">Treasury stock, at cost, 27,488,254 shares and 27,487,571 shares at March 31, 2012 and December 31, 2011, respectively</a></td>
        <td class="num">(624,774)<span></span></td>
        <td class="num">(624,759)<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest', window );">Total stockholders' equity</a></td>
        <td class="nump">2,614,475<span></span></td>
        <td class="nump">2,516,631<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesAndStockholdersEquity', window );">Total liabilities and stockholders' equity</a></td>
        <td class="nump">$ 4,363,832<span></span></td>
        <td class="nump">$ 4,221,901<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DepositsOnEquipmentPurchases">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value of amounts transferred to third parties that are expected to be applied towards payment for equipment to be received at a future date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DepositsOnEquipmentPurchases</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_GoodwillAndIntangibleAssetsNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of the carrying amounts of all goodwill and intangible assets of the balance sheet date, net of accumulated amortization and impairment charges.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_GoodwillAndIntangibleAssetsNet</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsPayableCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 19<br><br><br><br> -Subparagraph a<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.19(a))<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccountsPayableCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsReceivableNetCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 3<br><br><br><br> -Subparagraph a(1)<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 4<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.3-4)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccountsReceivableNetCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedIncomeTaxesCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 7<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 15<br><br><br><br> -Subparagraph b(1)<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 9<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 15<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 20<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.20)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 109<br><br><br><br> -Section Appendix E<br><br><br><br> -Paragraph 289<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name FASB Interpretation (FIN)<br><br><br><br> -Number 48<br><br><br><br> -Paragraph 15, 21<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedIncomeTaxesCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedLiabilitiesCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 20<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.20)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccruedLiabilitiesCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 220<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 13<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e653-108580<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 130<br><br><br><br> -Paragraph 14, 17, 26<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 31<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher AICPA<br><br><br><br> -Name Accounting Principles Board Opinion (APB)<br><br><br><br> -Number 12<br><br><br><br> -Paragraph 10<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name FASB Staff Position (FSP)<br><br><br><br> -Number FAS115-1/124-1<br><br><br><br> -Paragraph 15D<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 220<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 11<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e637-108580<br><br><br><br><br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 04<br><br><br><br> -Article 3<br><br><br><br><br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 220<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 14<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e681-108580<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdditionalPaidInCapital">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 31<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.30(a)(1))<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AdditionalPaidInCapital</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 7<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 12<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br> -Section S99<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Publisher FASB<br><br><br><br> -Paragraph 1<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Concepts (CON)<br><br><br><br> -Number 6<br><br><br><br> -Paragraph 25<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 18<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.18)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_Assets</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 3<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6801-107765<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Section 45<br><br><br><br> -SubTopic 10<br><br><br><br> -Topic 210<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Paragraph 1<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 9<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.9)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 1<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AssetsCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrentAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AssetsCurrentAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.1)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 1<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 95<br><br><br><br> -Paragraph 7<br><br><br><br> -Footnote 1<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 230<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 4<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3044-108585<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 95<br><br><br><br> -Paragraph 8, 9<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (a)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br><br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Glossary Cash<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6506951<br><br><br><br><br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 95<br><br><br><br> -Paragraph 7, 26<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Glossary Cash Equivalents<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6507016<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CashAndCashEquivalentsAtCarryingValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommitmentsAndContingencies">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 942<br><br><br><br> -SubTopic 210<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.9-03.17)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 17<br><br><br><br> -Article 9<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 7<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 19<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 25<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 944<br><br><br><br> -SubTopic 210<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.7-03.(a),19)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879938&amp;loc=d3e572229-122910<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 450<br><br><br><br> -SubTopic 20<br><br><br><br> -Section 50<br><br><br><br> -Paragraph 1<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6952336&amp;loc=d3e14326-108349<br><br><br><br><br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 5<br><br><br><br> -Paragraph 8, 9<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.25)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommitmentsAndContingencies</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 30<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.29)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>For entities that net deferred tax assets and tax liabilities, represents the net amount of deferred tax assets (after reduction for valuation allowance) and liabilities as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets or liabilities that are classified as current in the financial statements, or that are expected to reverse in the next twelve months (or normal operating cycle, if longer). A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 50<br><br><br><br> -Paragraph 2<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32537-109319<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 109<br><br><br><br> -Paragraph 41, 42, 43<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 4<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907571&amp;loc=d3e31917-109318<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 6<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907571&amp;loc=d3e31931-109318<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>For entities that net deferred tax assets and tax liabilities, represents the net amount of deferred tax assets (after reduction for valuation allowance) and liabilities as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets or liabilities that are classified as noncurrent in the financial statements, or that are expected to reverse after the next twelve months (or beyond the normal operating cycle, if longer). A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 50<br><br><br><br> -Paragraph 2<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32537-109319<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 109<br><br><br><br> -Paragraph 41, 42, 43<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 4<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907571&amp;loc=d3e31917-109318<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 740<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 6<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907571&amp;loc=d3e31931-109318<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.6(a))<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 330<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 35<br><br><br><br> -Paragraph 2<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6386567&amp;loc=d3e3927-108312<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (b)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6361293&amp;loc=d3e6676-107765<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_InventoryNet</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Liabilities">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.19-26)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_Liabilities</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesAndStockholdersEquity">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total of all Liabilities and Stockholders' Equity items (or Partners' Capital, as applicable), including the portion of equity attributable to noncontrolling interests, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 32<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.32)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 7<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 25<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LiabilitiesAndStockholdersEquity</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 21<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.21)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LiabilitiesCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrentAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LiabilitiesCurrentAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 20<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 19<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.19,20)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LongTermDebtCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermLineOfCredit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Glossary Line-of-Credit Arrangement<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6517033<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 470<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 13<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6743817&amp;loc=d3e1314-112600<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 22<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 470<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 14<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6743817&amp;loc=d3e1336-112600<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 6<br><br><br><br> -Paragraph 9, 10, 11<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.22)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LongTermLineOfCredit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 8<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.8)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherAssetsCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsNoncurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 17<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.17)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherAssetsNoncurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherLiabilitiesNoncurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 24<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.24)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherLiabilitiesNoncurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherLongTermDebtNoncurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying value as of the balance sheet date of debt not otherwise defined (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 22<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.22)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherLongTermDebtNoncurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 129<br><br><br><br> -Paragraph 2, 3, 4, 5, 6, 7, 8<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 505<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.3-04)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher AICPA<br><br><br><br> -Name Accounting Principles Board Opinion (APB)<br><br><br><br> -Number 12<br><br><br><br> -Paragraph 10<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.28)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 04<br><br><br><br> -Article 3<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 5<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 29<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PreferredStockValue</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.13)<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Article 7<br><br><br><br> -Section 03<br><br><br><br> -Paragraph 8<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 13<br><br><br><br> -Subparagraph a<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br><br><br> -Number 12<br><br><br><br> -Paragraph 5<br><br><br><br> -Subparagraph b, c<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 360<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 50<br><br><br><br> -Paragraph 1<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PropertyPlantAndEquipmentNet</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 210<br><br><br><br> -SubTopic 10<br><br><br><br> -Section S99<br><br><br><br> -Paragraph 1<br><br><br><br> -Subparagraph (SX 210.5-02.31(a)(3))<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher AICPA<br><br><br><br> -Name Accounting Principles Board Opinion (APB)<br><br><br><br> -Number 12<br><br><br><br> -Paragraph 10<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 02<br><br><br><br> -Paragraph 31<br><br><br><br> -Article 5<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher SEC<br><br><br><br> -Name Regulation S-X (SX)<br><br><br><br> -Number 210<br><br><br><br> -Section 04<br><br><br><br> -Article 3<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_RetainedEarningsAccumulatedDeficit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockholdersEquityAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 810<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 16<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4568740-111683<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 810<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 55<br><br><br><br> -Paragraph 4I<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4590271-111686<br><br><br><br><br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Name Accounting Research Bulletin (ARB)<br><br><br><br> -Publisher AICPA<br><br><br><br> -Number 51<br><br><br><br> -Paragraph 26<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher AICPA<br><br><br><br> -Name Accounting Research Bulletin (ARB)<br><br><br><br> -Number 51<br><br><br><br> -Paragraph A3<br><br><br><br> -Appendix A<br><br><br><br><br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher AICPA<br><br><br><br> -Name Accounting Research Bulletin (ARB)<br><br><br><br> -Number 51<br><br><br><br> -Paragraph 25<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 810<br><br><br><br> -SubTopic 10<br><br><br><br> -Section 45<br><br><br><br> -Paragraph 15<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4568447-111683<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest</nobr></td>
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        <tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name FASB Technical Bulletin (FTB)<br><br><br><br> -Number 85-6<br><br><br><br> -Paragraph 3<br><br><br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br><br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br><br><br> -Publisher FASB<br><br><br><br> -Name Accounting Standards Codification<br><br><br><br> -Topic 505<br><br><br><br> -SubTopic 30<br><br><br><br> -Section 50<br><br><br><br> -Paragraph 4<br><br><br><br> -URI http://asc.fasb.org/extlink&amp;oid=6405834&amp;loc=d3e23315-112656<br><br><br><br><br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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</div>
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                <p>Number of Reportable Business Segments</p>
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                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EJF">
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          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
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        <th class="th" colspan="2">3 Months Ended</th>
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      <tr>
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          <div>Mar. 31, 2012</div>
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        <th class="th">
          <div>Mar. 31, 2011</div>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossTax', window );">Other comprehensive income, taxes</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tax effect of the change in accumulated other comprehensive income (loss), that is, the tax effect on items included in other comprehensive income (loss) during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 220<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 12<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e640-108580<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 31<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(3)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 130<br><br> -Paragraph 24<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 36<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 11<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6909487&amp;loc=d3e39076-109324<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EVOAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Stockholders' Equity - Additional Information (Detail) (USD $)<br></strong></div>
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      <tr>
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</div>
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          <div>Apr. 25, 2012

</div>
          <div>Dividend Declared</div>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
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        <td class="text">Apr. 25,
         2012<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
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        <td class="text">Jun. 29,
         2012<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear', window );">Dividend record date</a></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">Jun. 15,
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                <p>Stock Repurchase Program, Authorized Repurchase Amount</p>
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                <p>No definition available.</p>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate dividends declared during the period for each share of common stock outstanding.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockDividendsPerShareDeclared</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendPayableDateToBePaidDayMonthAndYear">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The day, month, and year (YYYY-MM-DD) that the dividend declared as of or prior to the financial reporting date will be paid in the subsequent period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4304-108586<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DividendPayableDateToBePaidDayMonthAndYear</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:dateItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
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        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsPayableDateDeclaredDayMonthAndYear">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The day, month and year (YYYY-MM-DD) that the dividend to be paid was declared.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 32<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6367179&amp;loc=d3e4304-108586<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DividendsPayableDateDeclaredDayMonthAndYear</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:dateItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The date as of when a holder must own the stock to be entitled to the dividend. The ex-dividend date is generally 3 days before the record date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DividendsPayableDateOfRecordDayMonthAndYear</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:dateItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockRepurchasedDuringPeriodShares">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 1<br><br> -Section B<br><br> -Paragraph 11A<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockRepurchasedDuringPeriodShares</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockRepurchaseProgramAuthorizedAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount authorized by an entity's Board of Directors under a stock repurchase plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockRepurchaseProgramAuthorizedAmount</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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              </div>
            </div>
          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockSharesAcquired">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of shares that have been repurchased during the period and are being held in treasury.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_TreasuryStockSharesAcquired</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 30<br><br> -Section 45<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 1<br><br> -Section B<br><br> -Paragraph 7<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Fair Values of Financial Instruments (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CarryingValueAndFairValueOfFinancialInstrumentsDisclosureTextBlock', window );">Estimated Fair Value of Outstanding Debt Balances</a></td>
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<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">The estimated
fair value of the Company&#x2019;s outstanding debt balances
(including current portion) as of March&#xA0;31, 2012 and
December&#xA0;31, 2011 is set forth below (in
thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="92%" align="center">
<tr>
<td width="64%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,
2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,
2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Borrowings under Credit
Agreement:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Revolving credit
facility</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">108,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">108,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">110,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">110,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Term loan
facility</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">90,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">90,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">92,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">92,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Senior Notes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">322,849</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">315,942</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total debt</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">498,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">521,349</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">502,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">518,442</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying Value and Fair Value of Financial Instruments Disclosure</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>46
<FILENAME>R22.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Fair Values of Financial Instruments<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
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      <tr class="re">
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        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>13.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Fair Values of Financial
Instruments</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The carrying values of cash
and cash equivalents, trade receivables and accounts payable
approximate fair value due to the short-term maturity of these
items. These fair value estimates are considered Level 1 fair value
estimates in the fair value hierarchy of fair value
accounting.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The estimated fair value of
the Company&#x2019;s outstanding debt balances (including current
portion) as of March&#xA0;31, 2012 and December&#xA0;31, 2011 is
set forth below (in thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="92%" align="center">
<tr>
<td width="64%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,
2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,
2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Borrowings under Credit
Agreement:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Revolving credit
facility</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">108,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">108,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">110,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">110,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Term loan
facility</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">90,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">90,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">92,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">92,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Senior Notes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">322,849</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">315,942</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total debt</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">498,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">521,349</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">502,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">518,442</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
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<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The carrying value of the
balance outstanding under the term loan facility and revolving
credit facility approximates fair value as both facilities have a
floating interest rate. The fair value of the 4.97% Series A Senior
Notes at March&#xA0;31, 2012 and December&#xA0;31, 2011 was
measured based on discounted cash flows associated with the Senior
Notes using current market rates of interest at those respective
dates. The current market rates used in measuring this fair value
were 3.91% at March 31, 2012 and 4.07% at December 31, 2011. These
fair value estimates are based on observable market inputs and are
considered Level 2 fair value estimates in the fair value hierarchy
of fair value accounting.</font></font></p>
</div><span></span></td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 820<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6925170&amp;loc=d3e19296-110258<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 159<br><br> -Paragraph 17-22, 27, 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13433-108611<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 107<br><br> -Paragraph 15C, 15D<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 28<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6957238&amp;loc=d3e14064-108612<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 16<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13504-108611<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 107<br><br> -Paragraph 15A<br><br> -Subparagraph a-d<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 21<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6947722&amp;loc=d3e13537-108611<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 133<br><br> -Paragraph 44A, 44B<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 820<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6925170&amp;loc=d3e19207-110258<br><br><br><br>Reference 11: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 30<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6957238&amp;loc=d3e14172-108612<br><br><br><br>Reference 12: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 107<br><br> -Paragraph 3, 10, 14, 15<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 13: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 107<br><br> -Paragraph 15B<br><br> -Subparagraph a, b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 14: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 157<br><br> -Paragraph 32, 33, 34<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0E2YAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Calculation of Income (Loss) Per Share From Continuing and Discontinued Operations (Detail) (USD $)<br>In Thousands, except Per Share data, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasicAbstract', window );"><strong>BASIC EPS:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperations', window );">Income from continuing operations</a></td>
        <td class="nump">$ 97,274<span></span></td>
        <td class="nump">$ 71,619<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares', window );">Adjust for income attributed to holders of non-vested restricted stock</a></td>
        <td class="num">(742)<span></span></td>
        <td class="num">(501)<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders', window );">Income from continuing operations attributed to common stockholders</a></td>
        <td class="nump">96,532<span></span></td>
        <td class="nump">71,118<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity', window );">Loss from discontinued operations, net</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="num">(367)<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncomeLossFromDiscontinuedOperationsAllocableToNonVestedRestrictedShares', window );">Adjust for loss attributed to holders of non-vested restricted stock</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">3<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax', window );">Loss from discontinued operations attributed to common stockholders</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="num">(364)<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic', window );">Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock</a></td>
        <td class="nump">154,625<span></span></td>
        <td class="nump">153,122<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare', window );">Basic income from continuing operations per common share</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="nump">$ 0.46<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare', window );">Basic loss from discontinued operations per common share</a></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="nump">$ 0.00<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasic', window );">Basic net income per common share</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="nump">$ 0.46<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareDilutedAbstract', window );"><strong>DILUTED EPS:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders', window );">Income from continuing operations attributed to common stockholders</a></td>
        <td class="nump">96,532<span></span></td>
        <td class="nump">71,118<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_IncrementalIncomeLossRelatedToPotentialCommonShares', window );">Add incremental earnings related to potential common shares</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">4<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares', window );">Adjusted income from continuing operations attributed to common stockholders</a></td>
        <td class="nump">$ 96,532<span></span></td>
        <td class="nump">$ 71,122<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic', window );">Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock</a></td>
        <td class="nump">154,625<span></span></td>
        <td class="nump">153,122<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment', window );">Add dilutive effect of potential common shares</a></td>
        <td class="nump">776<span></span></td>
        <td class="nump">1,531<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding', window );">Weighted average number of diluted common shares outstanding</a></td>
        <td class="nump">155,401<span></span></td>
        <td class="nump">154,653<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare', window );">Diluted income from continuing operations per common share</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="nump">$ 0.46<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare', window );">Diluted loss from discontinued operations per common share</a></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="nump">$ 0.00<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareDiluted', window );">Diluted net income per common share</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="nump">$ 0.46<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Potentially dilutive securities excluded as anti-dilutive</a></td>
        <td class="nump">3,229<span></span></td>
        <td class="nump">725<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Adjusted income loss from continuing operations available to common shares</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_AdjustedIncomeLossFromContinuingOperationsAvailableToCommonShares</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Adjusted Income Loss From Discontinued Operations Available To Common Shares Net Of Tax</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_AdjustedIncomeLossFromDiscontinuedOperationsAvailableToCommonSharesNetOfTax</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Income Loss From Continuing Operations Allocable To Non Vested Restricted Shares</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncomeLossFromContinuingOperationsAllocableToNonVestedRestrictedShares</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Income (Loss) from Continuing Operations Available to Common Shareholders</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncomeLossFromContinuingOperationsAvailableToCommonShareholders</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncomeLossFromDiscontinuedOperationsAllocableToNonVestedRestrictedShares">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Income Loss From Discontinued Operations Allocable To Non Vested Restricted Shares</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncomeLossFromDiscontinuedOperationsAllocableToNonVestedRestrictedShares</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_IncrementalIncomeLossRelatedToPotentialCommonShares">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Incremental Income (Loss) Related to Potential Common Shares</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_IncrementalIncomeLossRelatedToPotentialCommonShares</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Antidilution<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6505113<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 171<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 13, 14<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Diluted Earnings Per Share<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6510752<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Contingent Stock Agreement<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6508534<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasic">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 52<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6945512&amp;loc=d3e4984-109258<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 11: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareBasic</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasicAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareBasicAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareDiluted">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 11, 12, 36<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareDiluted</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareDilutedAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareDilutedAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperations">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 18<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4613673-111683<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph b(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperations</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperationsPerBasicShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 11, 12, 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph b(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) derived from discontinued operations during the period, net of related tax effect, per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8, 9, 10, 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1278-109256<br><br><br><br></p>
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                <p>The amount of net income or loss derived from discontinued operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
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                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 5<br><br> -Section E<br><br> -Paragraph Question 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1278-109256<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
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                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                <p>The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 16<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1505-109256<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td><strong> Data Type:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1448-109256<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 171<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Weighted-Average Number of Common Shares Outstanding<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6528421<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Subsequent Event<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
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      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
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<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>15.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Subsequent
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<font style="FONT-FAMILY: Times New Roman" size="2">On April 23,
2012, the Company sold its flowback operations to a subsidiary of
TETRA Technologies, Inc. in a cash transaction. The sale price was
$42.5 million and a subsidiary of the Company retained the
associated financial working capital of approximately $5 million.
The Company expects to report a pretax gain of approximately $20
million in the second quarter of 2012 as a result of this
transaction.</font></p>
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                <p>Tabular disclosure of significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)<br></strong></div>
        </th>
        <th class="th">
          <div>Total</div>
        </th>
        <th class="th">
          <div>Common Stock</div>
        </th>
        <th class="th">
          <div>Additional Paid-in Capital</div>
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          <div>Retained Earnings</div>
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          <div>Accumulated Other Comprehensive Income</div>
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          <div>Treasury Stock</div>
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        <td class="nump">$ 2,516,631,000<span></span></td>
        <td class="nump">$ 1,833,000<span></span></td>
        <td class="nump">$ 840,731,000<span></span></td>
        <td class="nump">$ 2,279,367,000<span></span></td>
        <td class="nump">$ 19,459,000<span></span></td>
        <td class="num">$ (624,759,000)<span></span></td>
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        <td class="nump">183,295,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">97,274,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">97,274,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease', window );">Foreign currency translation adjustment</a></td>
        <td class="nump">2,554,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">2,554,000<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited', window );">Forfeitures of restricted stock</a></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">13,300<span></span></td>
        <td class="nump">14,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">195,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">195,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">5,458,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="nump">5,458,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">166,000<span></span></td>
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        <td class="nump">166,000<span></span></td>
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        <td class="num">(7,788,000)<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="num">(7,788,000)<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="num">(15,000)<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="nump">$ 2,614,475,000<span></span></td>
        <td class="nump">$ 1,833,000<span></span></td>
        <td class="nump">$ 846,550,000<span></span></td>
        <td class="nump">$ 2,368,853,000<span></span></td>
        <td class="nump">$ 22,013,000<span></span></td>
        <td class="num">$ (624,774,000)<span></span></td>
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        <td class="nump">183,315,514<span></span></td>
        <td class="nump">183,316,000<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 35<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415241&amp;loc=d3e4534-113899<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 20<br><br> -Section 55<br><br> -Paragraph 12<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6576910&amp;loc=d3e11149-113907<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph 64<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A91<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 20<br><br> -Section 55<br><br> -Paragraph 13<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6576910&amp;loc=d3e11178-113907<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5047-113901<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph 39<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
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                <p>Adjustment to additional paid in capital related to the net effect of excess tax benefits and tax deficiencies associated with an equity-based compensation plan other than an employee stock ownership plan (ESOP).</p>
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                <p>No definition available.</p>
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          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesIssued">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockSharesIssued</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DividendsCommonStockCash">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Equity impact of common stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DividendsCommonStockCash</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 830<br><br> -SubTopic 30<br><br> -Section 45<br><br> -Paragraph 20<br><br> -Subparagraph (b),(c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6915805&amp;loc=d3e32211-110900<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 220<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 2<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920433&amp;loc=d3e998-108581<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 130<br><br> -Paragraph 24<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(3)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 130<br><br> -Paragraph 14, 17, 19, 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 52<br><br> -Paragraph 13, 20, 31<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProfitLoss">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4J<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591551-111686<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph A1, A4, A5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1A<br><br> -Subparagraph (a),(c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921930&amp;loc=SL4573702-111684<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4K<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591552-111686<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 5<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProfitLoss</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 16<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4568740-111683<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4I<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4590271-111686<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Publisher AICPA<br><br> -Number 51<br><br> -Paragraph 26<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph A3<br><br> -Appendix A<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 25<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 15<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4568447-111683<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of shares related to Restricted Stock Award forfeited during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 4, 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 4, 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of share options (or share units) exercised during the current period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28,29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Value stock issued during the period as a result of the exercise of stock options.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29-31)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30, 31<br><br> -Article 5<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockValueAcquiredCostMethod">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 30<br><br> -Section 45<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 1<br><br> -Section B<br><br> -Paragraph 7<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_TreasuryStockValueAcquiredCostMethod</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
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<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EWOAC">
      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)<br>In Thousands, except Share data, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th">
          <div>Dec. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent', window );">Accounts receivable, allowance for doubtful accounts</a></td>
        <td class="nump">$ 6,540<span></span></td>
        <td class="nump">$ 4,887<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value</a></td>
        <td class="nump">$ 0.01<span></span></td>
        <td class="nump">$ 0.01<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesAuthorized', window );">Preferred stock, authorized</a></td>
        <td class="nump">1,000,000<span></span></td>
        <td class="nump">1,000,000<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesIssued', window );">Preferred stock, shares issued</a></td>
        <td class="nump">0<span></span></td>
        <td class="nump">0<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value</a></td>
        <td class="nump">$ 0.01<span></span></td>
        <td class="nump">$ 0.01<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesAuthorized', window );">Common stock, authorized</a></td>
        <td class="nump">300,000,000<span></span></td>
        <td class="nump">300,000,000<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Common stock, issued</a></td>
        <td class="nump">183,315,514<span></span></td>
        <td class="nump">183,295,350<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common stock, outstanding</a></td>
        <td class="nump">155,827,260<span></span></td>
        <td class="nump">155,807,779<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TreasuryStockShares', window );">Treasury stock, shares</a></td>
        <td class="nump">27,488,254<span></span></td>
        <td class="nump">27,487,571<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 4<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 310<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6965416&amp;loc=d3e5074-111524<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.4)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockParOrStatedValuePerShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockParOrStatedValuePerShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
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              </div>
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        </tr>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The maximum number of common shares permitted to be issued by an entity's charter and bylaws.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockSharesAuthorized</nobr></td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockSharesIssued</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td>instant</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21463-112644<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 30<br><br> -Article 5<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CommonStockSharesOutstanding</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockParOrStatedValuePerShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 10<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 02<br><br> -Paragraph 29<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 3, 4, 5, 6, 7, 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PreferredStockParOrStatedValuePerShare</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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          </td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesAuthorized">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 02<br><br> -Paragraph 29<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 3, 4, 5, 6, 7, 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PreferredStockSharesAuthorized</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesIssued">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 02<br><br> -Paragraph 29<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PreferredStockSharesIssued</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td>instant</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.28,29)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_TreasuryStockShares</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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          <div style="width: 200px;"><strong>Asset Retirement Obligation<br></strong></div>
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        <th class="th" colspan="1">3 Months Ended</th>
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      <tr>
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          <div>Mar. 31, 2012</div>
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<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>8.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Asset Retirement
Obligation</b></font></td>
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<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company records a
liability for the estimated costs to be incurred in connection with
the abandonment of oil and natural gas properties in the future.
This liability is included in the caption &#x201C;other&#x201D; in
the liabilities section of the consolidated balance sheet. The
following table describes the changes to the Company&#x2019;s asset
retirement obligations during the three months ended March&#xA0;31,
2012 and 2011 (in thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
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<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;
31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance at beginning of
year</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,455</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,063</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<tr>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liabilities
incurred</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">106</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">65</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Liabilities
settled</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(68</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(15</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
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<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Accretion
expense</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">37</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">35</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revision in estimated costs
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">550</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(2</font></td>
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<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
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<td>&#xA0;</td>
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<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
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<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Asset retirement obligation
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<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
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<td valign="bottom">&#xA0;&#xA0;</td>
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<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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<td valign="bottom">
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<td valign="bottom">
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 143<br><br> -Paragraph 22<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7569-110849<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 410<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                <p>No definition available.</p>
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                <p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation 12B<br><br> -Number 240<br><br> -Section 12b<br><br> -Subsection 1<br><br><br><br></p>
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                <p>Indicate number of shares outstanding of each of registrant's classes of common stock, as of latest practicable date. Where multiple classes exist define each class by adding class of stock items such as Common Class A [Member], Common Class B [Member] onto the Instrument [Domain] of the Entity Listings, Instrument</p>
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                <p>No definition available.</p>
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                <p>Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, or (4) Smaller Reporting Company. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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                <p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation 12B<br><br> -Number 240<br><br> -Section 12b<br><br> -Subsection 1<br><br><br><br></p>
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                <p>Trading symbol of an instrument as listed on an exchange.</p>
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<DOCUMENT>
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<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Long Term Debt<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtTextBlock', window );">Long Term Debt</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>9.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Long Term
Debt</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Credit Facilities
&#x2014;</i> On August&#xA0;19, 2010, the Company entered into a
Credit Agreement (the &#x201C;Credit Agreement&#x201D;) with Wells
Fargo Bank, N.A., as administrative agent, letter of credit issuer,
swing line lender and lender, and each of the other letter of
credit issuer and lender parties thereto. The Credit Agreement is a
committed senior unsecured credit facility that includes a
revolving credit facility and a term loan
facility.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The revolving credit
facility permits aggregate borrowings of up to $400 million and
contains a letter of credit facility that is limited to $150
million and a swing line facility that is limited to $40 million.
Subject to customary conditions, the Company may request that the
lenders&#x2019; aggregate commitments with respect to the revolving
credit facility be increased by up to $100 million, not to exceed
total commitments of $500 million. The maturity date for the
revolving facility is August&#xA0;19, 2013.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The term loan facility
provided for a loan of $100 million which was funded on
August&#xA0;19, 2010. The term loan facility is payable in
quarterly principal installments commencing November&#xA0;19, 2010.
The installment amounts vary from 1.25% of the original principal
amount for each of the first four quarterly installments, 2.50% of
the original principal amount for each of the subsequent eight
quarterly installments and 5.00% of the original principal amount
for the next subsequent three quarterly installments, with the
remainder becoming due at maturity. The maturity date for the term
loan facility is August&#xA0;19, 2014.</font></font></p>
<p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Loans under the Credit
Agreement bear interest by reference, at the Company&#x2019;s
election, to the LIBOR rate or base rate. The applicable margin on
LIBOR rate loans varies from 2.75% to 3.75% and the applicable
margin on base rate loans varies from 1.75% to 2.75%, in each case
determined based upon the Company&#x2019;s debt to capitalization
ratio. As of December&#xA0;31, 2011, the applicable margin on LIBOR
rate loans was 2.75% and the applicable margin on base rate loans
was 1.75%. A letter of credit fee is payable by the Company equal
to the applicable margin for LIBOR rate loans times the daily
amount available to be drawn under outstanding letters of credit.
The commitment fee payable to the lenders for the unused portion of
the revolving credit facility varies from 0.50% to 0.75% based upon
the Company&#x2019;s debt to capitalization ratio and was 0.50% as
of March&#xA0;31, 2012.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Each domestic subsidiary of
the Company other than any immaterial subsidiary has
unconditionally guaranteed all existing and future indebtedness and
liabilities of the Company and the other guarantors arising under
the Credit Agreement and other loan documents. Such guarantees also
cover obligations of the Company and any subsidiary of the Company
arising under any interest rate swap contract with any person while
such person is a lender or affiliate of a lender under the Credit
Agreement.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Credit Agreement
contains customary representations, warranties, indemnities and
affirmative and negative covenants. The Credit Agreement also
requires compliance with two financial covenants. The Company must
not permit its debt to capitalization ratio to exceed 45% at any
time. The Credit Agreement generally defines the debt to
capitalization ratio as the ratio of (a)&#xA0;total borrowed money
indebtedness to (b)&#xA0;the sum of such indebtedness plus
consolidated net worth, with consolidated net worth determined as
of the last day of the most recently ended fiscal quarter. The
Company also must not permit the interest coverage ratio as of the
last day of a fiscal quarter to be less than 3.00 to 1.00. The
Credit Agreement generally defines the interest coverage ratio as
the ratio of earnings before interest, taxes, depreciation and
amortization (&#x201C;EBITDA&#x201D;) of the four prior fiscal
quarters to interest charges for the same period. The Company was
in compliance with these covenants at March 31,
2012.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2012,
the Company had $90.0 million principal amount outstanding under
the term loan facility at an interest rate of 3.00% and
approximately $109 million principal amount outstanding under the
revolving credit facility at a weighted average interest rate of
3.28%. The carrying value of the balances outstanding under the
term loan facility and the revolving credit facility approximate
fair value due to the frequency at which the interest rate resets.
The Company had $40.6 million in letters of credit outstanding at
March&#xA0;31, 2012 and, as a result, had available borrowing
capacity of approximately $251 million at that
date.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Senior Notes &#x2014;</i>
On October&#xA0;5, 2010, the Company completed the issuance and
sale of $300 million in aggregate principal amount of its 4.97%
Series A Senior Notes due October&#xA0;5, 2020 (the
&#x201C;Notes&#x201D;) in a private placement. The fair value of the
Notes at March&#xA0;31, 2012 was approximately $323 million based
on discounted cash flows associated with the Notes using current
market rates of interest. The Notes are senior unsecured
obligations of the Company which rank equally in right of payment
with all other unsubordinated indebtedness of the Company. The
Notes are guaranteed on a senior unsecured basis by each of the
existing domestic subsidiaries of the Company other than immaterial
subsidiaries.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Notes bear interest at
a rate of 4.97%&#xA0;per annum. The Company will pay interest on
the Notes on April&#xA0;5 and October&#xA0;5 of each year. The
Notes will mature on October&#xA0;5, 2020. The Notes are prepayable
at the Company&#x2019;s option, in whole or in part, provided that
in the case of a partial prepayment, prepayment must be in an
amount not less than 5% of the aggregate principal amount of the
Notes then outstanding, at any time and from time to time at 100%
of the principal amount prepaid, plus accrued and unpaid interest
to the prepayment date, plus a &#x201C;make-whole&#x201D; premium as
specified in the note purchase agreement. The Company must offer to
prepay the Notes upon the occurrence of any change of control. In
addition, the Company must offer to prepay the Notes upon the
occurrence of certain asset dispositions if the proceeds therefrom
are not timely reinvested in productive assets. If any offer to
prepay is accepted, the purchase price of each prepaid Note is 100%
of the principal amount thereof, plus accrued and unpaid interest
thereon to the prepayment date.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The note purchase agreement
requires compliance with two financial covenants. The Company must
not permit its debt to capitalization ratio to exceed 50% at any
time. The note purchase agreement generally defines the debt to
capitalization ratio as the ratio of (a)&#xA0;total borrowed money
indebtedness to (b)&#xA0;the sum of such indebtedness plus
consolidated net worth, with consolidated net worth determined as
of the last day of the most recently ended fiscal quarter. The
Company also must not permit the interest coverage ratio as of the
last day of a fiscal quarter to be less than 2.50 to 1.00. The note
purchase agreement generally defines the interest coverage ratio as
the ratio for the four prior quarters of EBITDA to interest charges
for that same period. The Company was in compliance with these
covenants at March 31, 2012.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Events of default under the
note purchase agreement and the Credit Agreement include failure to
pay principal or interest when due, failure to comply with the
financial and operational covenants, a cross default event, a
judgment in excess of a threshold event, the guaranty agreement
ceasing to be enforceable, the occurrence of certain ERISA events,
a change of control event and bankruptcy and other insolvency
events. If an event of default under the note purchase agreement
occurs and is continuing, then holders of a majority in principal
amount of the Notes have the right to declare all the Notes
then-outstanding to be immediately due and payable. In addition, if
the Company defaults in payments on any Note, then until such
defaults are cured, the holder thereof may declare all the Notes
held by it to be immediately due and payable.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company incurred
approximately $10.8 million in debt issuance costs during 2010 in
connection with the Credit Agreement and the Senior Notes discussed
above. These costs were deferred and will be recognized as interest
expense over the term of the underlying debt. Interest expense
related to the amortization of debt issuance costs for the Credit
Agreement and the Senior Notes was approximately $604,000 for the
three months ended March&#xA0;31, 2012 and 2011.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Presented below is a
schedule of the principal repayment requirements of long-term debt
by fiscal year as of March&#xA0;31, 2012 (in
thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="68%" align="center">
<tr>
<td width="87%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
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<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Year ending
December&#xA0;31,</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2013</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">121,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2014</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">70,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2015</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">2016</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Thereafter</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">300,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Total</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">498,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtTextBlock">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for long-term debt.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 22<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.22)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_LongTermDebtTextBlock</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>nonnum:textBlockItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
    </div>
  </body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>55
<FILENAME>R4.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0E6NBG">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)<br>In Thousands, except Per Share data, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="4">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th" colspan="2">
          <div>Mar. 31, 2012</div>
        </th>
        <th class="th" colspan="2">
          <div>Mar. 31, 2011</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenuesAbstract', window );"><strong>Operating revenues:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OilAndGasSalesRevenue', window );">Oil and natural gas</a></td>
        <td class="nump">$ 14,717<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 10,387<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SalesRevenueNet', window );">Total operating revenues</a></td>
        <td class="nump">745,921<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">567,404<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingCostsAndExpensesAbstract', window );"><strong>Operating costs and expenses:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_ContractDrillingExpenses', window );">Contract drilling</a></td>
        <td class="nump">282,649<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">218,699<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_PressurePumpingOperatingCost', window );">Pressure pumping</a></td>
        <td class="nump">166,857<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">118,575<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OilAndGasProductionExpense', window );">Oil and natural gas</a></td>
        <td class="nump">2,730<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">1,997<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DepreciationDepletionAmortizationAndImpairment', window );">Depreciation, depletion, amortization and impairment</a></td>
        <td class="nump">122,953<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">96,215<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
        <td class="nump">13,868<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">15,975<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment', window );">Net gain on asset disposals</a></td>
        <td class="num">(2,400)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
        <td class="num">(1,604)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"><sup>[1]</sup></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProvisionForDoubtfulAccounts', window );">Provision for bad debts</a></td>
        <td class="nump">1,600<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CostsAndExpenses', window );">Total operating costs and expenses</a></td>
        <td class="nump">588,257<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">449,857<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income</a></td>
        <td class="nump">157,664<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">117,547<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NonoperatingIncomeExpenseAbstract', window );"><strong>Other income (expense):</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentIncomeInterest', window );">Interest income</a></td>
        <td class="nump">54<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">43<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestExpense', window );">Interest expense</a></td>
        <td class="num">(4,582)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(3,889)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNonoperatingIncome', window );">Other</a></td>
        <td class="nump">55<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">119<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NonoperatingIncomeExpense', window );">Total other expense</a></td>
        <td class="num">(4,473)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(3,727)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments', window );">Income from continuing operations before income taxes</a></td>
        <td class="nump">153,191<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">113,820<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxExpenseBenefitAbstract', window );"><strong>Income tax expense:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CurrentIncomeTaxExpenseBenefit', window );">Current</a></td>
        <td class="nump">7,510<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">3,582<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxExpenseBenefit', window );">Deferred</a></td>
        <td class="nump">48,407<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">38,619<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxExpenseBenefit', window );">Total income tax expense</a></td>
        <td class="nump">55,917<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">42,201<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperations', window );">Income from continuing operations</a></td>
        <td class="nump">97,274<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">71,619<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity', window );">Loss from discontinued operations, net of income taxes</a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="num">(367)<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProfitLoss', window );">Net income</a></td>
        <td class="nump">97,274<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">71,252<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasicAbstract', window );"><strong>Basic income (loss) per common share:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare', window );">Income from continuing operations</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.46<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare', window );">Loss from discontinued operations, net of income taxes</a></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasic', window );">Net income</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.46<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareDilutedAbstract', window );"><strong>Diluted income (loss) per common share:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare', window );">Income from continuing operations</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.46<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare', window );">Loss from discontinued operations, net of income taxes</a></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.00<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareDiluted', window );">Net income</a></td>
        <td class="nump">$ 0.62<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.46<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract', window );"><strong>Weighted average number of common shares outstanding:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic', window );">Basic</a></td>
        <td class="nump">154,625<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">153,122<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding', window );">Diluted</a></td>
        <td class="nump">155,401<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">154,653<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_CommonStockDividendsPerShareDeclaredAndPaid', window );">Cash dividends per common share</a></td>
        <td class="nump">$ 0.05<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 0.05<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Contract Drilling</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenuesAbstract', window );"><strong>Operating revenues:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueOilAndGasServices', window );">Oil and gas services</a></td>
        <td class="nump">489,482<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">377,358<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Pressure Pumping</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenuesAbstract', window );"><strong>Operating revenues:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RevenueOilAndGasServices', window );">Oil and gas services</a></td>
        <td class="nump">$ 241,722<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
        <td class="nump">$ 179,659<span></span></td>
        <td class="fn" style="border-bottom: 0px;"></td>
      </tr>
      <tr>
        <td colspan="5"></td>
      </tr>
      <tr>
        <td colspan="5">
          <table class="outerFootnotes" width="100%">
            <tr class="outerFootnote">
              <td style="vertical-align: top;" valign="top">[1]</td>
              <td style="vertical-align: top;" valign="top">Net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments.</td>
            </tr>
          </table>
        </td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_CommonStockDividendsPerShareDeclaredAndPaid">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Per share dividends declared and paid during the period for each share of common stock outstanding.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_CommonStockDividendsPerShareDeclaredAndPaid</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_ContractDrillingExpenses">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Costs incurred in providing contract drilling services and survey and related maintenance costs, contract preparation and mobilization costs.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_ContractDrillingExpenses</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DepreciationDepletionAmortizationAndImpairment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Depreciation, Depletion, Amortization and Impairment</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DepreciationDepletionAmortizationAndImpairment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_PressurePumpingOperatingCost">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Pressure Pumping Operating Cost</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_PressurePumpingOperatingCost</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostsAndExpenses">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total costs of sales and operating expenses for the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CostsAndExpenses</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentIncomeTaxExpenseBenefit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 289<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 45<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Paragraph h<br><br> -Article 4<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 6<br><br> -Section I<br><br> -Subsection 7<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 6.I.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6889476&amp;loc=d3e330036-122817<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Current Tax Expense (or Benefit)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6509736<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 9<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32639-109319<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_CurrentIncomeTaxExpenseBenefit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxExpenseBenefit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Deferred Tax Expense (or Benefit)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6510177<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Paragraph h<br><br> -Article 4<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 6<br><br> -Section I<br><br> -Subsection 7<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 45<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 289<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 9<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32639-109319<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SAB TOPIC 6.I.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6889476&amp;loc=d3e330036-122817<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DeferredIncomeTaxExpenseBenefit</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasic">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 52<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6945512&amp;loc=d3e4984-109258<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 11: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareBasic</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasicAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareBasicAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareDiluted">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 11, 12, 36<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareDiluted</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareDilutedAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_EarningsPerShareDilutedAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_GainLossOnSaleOfPropertyPlantEquipment</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperations">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 18<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4613673-111683<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph b(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.13)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperations</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 4<br><br> -Section 08<br><br> -Paragraph h<br><br> -Subparagraph 1(i)<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h)(1)(i))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperationsPerBasicShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1252-109256<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 11, 12, 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph b(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income (loss) derived from discontinued operations during the period, net of related tax effect, per each share of common stock or unit outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.23)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 7<br><br> -Paragraph 18<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 21<br><br> -Article 9<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 20<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.19)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.21)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8, 9, 10, 36, 37, 38<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1278-109256<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The amount of net income or loss derived from discontinued operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 5<br><br> -Section E<br><br> -Paragraph Question 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1278-109256<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxExpenseBenefit">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Income Tax Expense (or Benefit)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6515339<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 9<br><br> -Subparagraph (a),(b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32639-109319<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Paragraph h<br><br> -Article 4<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 45<br><br> -Subparagraph a, b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeTaxExpenseBenefit</nobr></td>
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                  <tr>
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                    <td>us-gaap_</td>
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                    <td>duration</td>
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        </tr>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeTaxExpenseBenefitAbstract</nobr></td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestExpense">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The cost of borrowed funds accounted for as interest that was charged against earnings during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 835<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6450988&amp;loc=d3e26243-108391<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.9-04.9)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879574&amp;loc=d3e536633-122882<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 34<br><br> -Paragraph 21<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 9<br><br> -Article 9<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher OTS<br><br> -Name Federal Regulation (FR)<br><br> -Number Title 12<br><br> -Chapter V<br><br> -Section 563c.102<br><br> -Paragraph 9<br><br> -Subsection II<br><br> -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy.  It will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_InterestExpense</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentIncomeInterest">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 7<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 115<br><br> -Paragraph 14<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.7(b))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_InvestmentIncomeInterest</nobr></td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NonoperatingIncomeExpense">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 7<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NonoperatingIncomeExpense</nobr></td>
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                  <tr>
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                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NonoperatingIncomeExpenseAbstract">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_NonoperatingIncomeExpenseAbstract</nobr></td>
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          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OilAndGasProductionExpense">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Costs incurred to operate and maintain an entities' wells and related equipment and facilities, including depreciation and applicable operating costs of support equipment and facilities and other costs of operating and maintaining those wells and related equipment and facilities.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 23<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e62136-109447<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 19<br><br> -Paragraph 24<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 360<br><br> -Section 25<br><br> -Paragraph 15<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6474861&amp;loc=d3e65139-109465<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OilAndGasProductionExpense</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                    <td>duration</td>
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          </td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OilAndGasSalesRevenue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Revenue from the sale of oil and gas during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 23<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e62136-109447<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 932<br><br> -SubTopic 235<br><br> -Section 50<br><br> -Paragraph 24<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6821537&amp;loc=d3e62246-109447<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OilAndGasSalesRevenue</nobr></td>
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                  <tr>
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                    <td>us-gaap_</td>
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                    <td>xbrli:monetaryItemType</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OperatingCostsAndExpensesAbstract</nobr></td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The net result for the period of deducting operating expenses from operating revenues.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OperatingIncomeLoss</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNonoperatingIncome">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate amount of other income amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 7<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Audit and Accounting Guide (AAG)<br><br> -Number AAG-BRD<br><br> -Chapter 4<br><br> -Paragraph 80<br><br> -Subparagraph Exhibit 4-4<br><br> -IssueDate 2006-05-01<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.7)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_OtherNonoperatingIncome</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProfitLoss">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4J<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591551-111686<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph A1, A4, A5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1A<br><br> -Subparagraph (a),(c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921930&amp;loc=SL4573702-111684<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 55<br><br> -Paragraph 4K<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6922042&amp;loc=SL4591552-111686<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 5<br><br> -Subparagraph b<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProfitLoss</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProvisionForDoubtfulAccounts">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.5)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 95<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 5<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 230<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 28<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6943989&amp;loc=d3e3602-108585<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ProvisionForDoubtfulAccounts</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueOilAndGasServices">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.1(d))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_RevenueOilAndGasServices</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenuesAbstract">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_RevenuesAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SalesRevenueNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 1<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_SalesRevenueNet</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SellingGeneralAndAdministrativeExpense">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 4<br><br> -Paragraph 5A<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 5<br><br> -Section 03<br><br> -Paragraph 4<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 225<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SX 210.5-03.4)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6880815&amp;loc=d3e20235-122688<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 330<br><br> -SubTopic 10<br><br> -Section 30<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6386349&amp;loc=d3e3636-108311<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_SellingGeneralAndAdministrativeExpense</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 16<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1505-109256<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (a)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 260<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920599&amp;loc=d3e1448-109256<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 171<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Weighted-Average Number of Common Shares Outstanding<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6528421<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 40<br><br> -Subparagraph a<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 128<br><br> -Paragraph 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Emerging Issues Task Force (EITF)<br><br> -Number 07-4<br><br> -Paragraph 4<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Stock-based Compensation<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
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        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>3.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Stock-based
Compensation</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company uses
share-based payments to compensate employees and non-employee
directors. The Company recognizes the cost of share-based payments
under the fair-value-based method. Share-based awards consist of
equity instruments in the form of stock options, restricted stock
or restricted stock units and have included service and, in certain
cases, performance conditions. The Company&#x2019;s share-based
awards also include both cash-settled and share-settled performance
unit awards. Cash-settled performance unit awards are accounted for
as liability awards. Share-settled performance unit awards are
accounted for as equity awards. The Company issues shares of common
stock when vested stock options are exercised, when restricted
stock is granted and when restricted stock units and share-settled
performance unit awards vest.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Stock
Options.</i>&#xA0;The Company estimates the grant date fair values
of stock options using the Black-Scholes-Merton valuation model.
Volatility assumptions are based on the historic volatility of the
Company&#x2019;s common stock over the most recent period equal to
the expected term of the options as of the date the options are
granted. The expected term assumptions are based on the
Company&#x2019;s experience with respect to employee stock option
activity. Dividend yield assumptions are based on the expected
dividends at the time the options are granted. The risk-free
interest rate assumptions are determined by reference to United
States Treasury yields. Weighted-average assumptions used to
estimate the grant date fair values for stock options granted in
the three month periods ended March&#xA0;31, 2012 and 2011
follow:</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="84%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;
31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Volatility</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48.72</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">47.43</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Expected term (in
years)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Dividend yield</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.93</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Risk-free interest
rate</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.83</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.01</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
</tr>
</table>
<p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Stock option activity from
January&#xA0;1, 2012 to March&#xA0;31, 2012
follows:</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="78%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Underlying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Exercise</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Price</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Outstanding at
January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,081,295</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.73</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">40,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.98</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exercised</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(13,300</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.64</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Outstanding at
March&#xA0;31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,107,995</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.74</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exercisable at
March&#xA0;31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,279,644</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.52</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Restricted
Stock.</i>&#xA0;For all restricted stock awards to date, shares of
common stock were issued when the awards were made. Non-vested
shares are subject to forfeiture for failure to fulfill service
conditions and, in certain cases, performance conditions.
Non-forfeitable dividends are paid on non-vested shares of
restricted stock. The Company uses the straight-line method to
recognize periodic compensation cost over the vesting
period.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted stock activity
from January&#xA0;1, 2012 to March&#xA0;31, 2012
follows:</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="76%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Grant&#xA0;Date</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair
Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
outstanding at January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,213,799</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.13</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.98</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Vested</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(59,459</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.49</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Forfeited</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(5,136</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23.70</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
outstanding at March 31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,161,204</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.53</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Restricted Stock
Units.</i>&#xA0;For all restricted stock unit awards made to date,
shares of common stock are not issued until the units vest.
Restricted stock units are subject to forfeiture for failure to
fulfill service conditions. Non-forfeitable cash dividend
equivalents are paid on non-vested restricted stock units. The
Company uses the straight-line method to recognize periodic
compensation cost over the vesting period.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Restricted stock unit
activity from January&#xA0;1, 2012 to March&#xA0;31, 2012
follows:</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="79%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Grant&#xA0;Date</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair
Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
units outstanding at January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">17,501</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23.47</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Vested</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Forfeited</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
units outstanding at March 31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">17,501</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23.47</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="PADDING-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Performance Unit
Awards.</i>&#xA0;In 2009, the Company granted cash-settled
performance unit awards to certain executive officers (the
&#x201C;2009 Performance Units&#x201D;). The 2009 Performance Units
provided for those executive officers to receive a cash payment
upon the achievement of certain performance goals established by
the Compensation Committee during a specified period. The
performance period for the 2009 Performance Units was the period
from April&#xA0;1, 2009 through March&#xA0;31, 2012. The
performance goals for the 2009 Performance Units were tied to the
Company&#x2019;s total shareholder return for the performance period
as compared to total shareholder return for a peer group determined
by the Compensation Committee of the Board of Directors. These
goals were considered to be market conditions under the relevant
accounting standards and the market conditions were factored into
the determination of the fair value of the performance units.
Generally, the recipients would receive a base payment if the
Company&#x2019;s total shareholder return was positive and, when
compared to the peer group, was at or above the
25</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile but
less than the 50</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile, two
times the base if at or above the 50</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile but
less than the 75</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile, and
four times the base if at the 75</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile or
higher. The total base amount with respect to the 2009 Performance
Units was approximately $1.7 million. Because the 2009 Performance
Units were settled in cash at the end of the performance period,
they were accounted for as liability awards and the Company&#x2019;s
pro-rated obligation was measured at estimated fair value at the
end of each reporting period using a Monte Carlo simulation model.
At March&#xA0;31, 2012, the performance period ended and the
Company&#x2019;s total shareholder return was at the
46</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile.</font> <font style="FONT-FAMILY: Times New Roman" size="2">The resulting cash payments totaling $1.7 million were
paid in April 2012 and&#xA0;are included in the caption
&#x201C;accrued expenses&#x201D; in the liabilities section of the
consolidated balance sheet at March&#xA0;31, 2012. A compensation
benefit associated with the 2009 Performance Units of approximately
$1.9 million was recognized for the three months ended
March&#xA0;31, 2012 and compensation expense associated with the
2009 Performance Units of approximately $1.2 million was recognized
for the three months ended March&#xA0;31, 2011.</font></font></p>
<p style="PADDING-BOTTOM: 0px; MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">In 2010 and 2011, the
Company granted stock-settled performance unit awards to certain
executive officers (the &#x201C;2010 Performance Units&#x201D; and
the &#x201C;2011 Performance Units&#x201D;, respectively). The 2010
Performance Units and the 2011 Performance Units provide for those
executive officers to receive a grant of shares of stock upon the
achievement of certain performance goals established by the
Compensation Committee during a specified period. The performance
period for the 2010 Performance Units is the period from
April&#xA0;1, 2010 through March&#xA0;31, 2013, but can extend
through March&#xA0;31, 2015 in certain circumstances. The
performance period for the 2011 Performance Units is the period
from April&#xA0;1, 2011 through March 31, 2014, but can extend
through March&#xA0;31, 2016 in certain circumstances. The
performance goals for the 2010 Performance Units and the 2011
Performance Units are tied to the Company&#x2019;s total shareholder
return for the performance period as compared to total shareholder
return for a peer group determined by the Compensation Committee.
These goals are considered to be market conditions under the
relevant accounting standards and the market conditions were
factored into the determination of the fair value of the
performance units. Generally, the recipients will receive a base
number of shares if the Company&#x2019;s total shareholder return is
positive and, when compared to the peer group, is at the
25</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile, two
times the base if at the 50</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile, and
four times the base if at the 75</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile or
higher. The grant of shares when achievement is between the
25</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">and
75</font><font style="FONT-FAMILY: Times New Roman" size="1"><sup style="POSITION: relative; BOTTOM: 0.8ex; VERTICAL-ALIGN: baseline">th</sup></font>
<font style="FONT-FAMILY: Times New Roman" size="2">percentile will
be determined on a pro-rata basis. The total base number of shares
with respect to the 2010 Performance Units is 89,375 shares and the
total base number of shares with respect to the 2011 Performance
Units is 72,188 shares. Because the 2010 Performance Units and 2011
Performance Units are stock-settled awards, they are accounted for
as equity awards and measured at fair value on the date of grant
using a Monte Carlo simulation model. The fair value of the 2010
Performance Units as of the date of grant was approximately $3.1
million and the fair value of the 2011 Performance Units as of the
date of grant was approximately $5.6 million. These amounts are
charged to expense on a straight-line basis over the performance
period. Compensation expense associated with the 2010 Performance
Units was approximately $260,000 for the three months ended
March&#xA0;31, 2012 and 2011, respectively. Compensation expense
associated with the 2011 Performance Units was approximately
$464,000 for the three months ended March&#xA0;31,
2012.</font></font></p>
</div><span></span></td>
      </tr>
    </table>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5444-113901<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Statement of Position (SOP)<br><br> -Number 93-6<br><br> -Paragraph 53<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 14<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph 64, 65, A240<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 40<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6418621&amp;loc=d3e17540-113929<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5047-113901<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 50<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6406099&amp;loc=d3e25284-112666<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Discontinued Operations<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
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        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Discontinued
Operations</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">On January&#xA0;27, 2011,
the stock of the Company&#x2019;s electric wireline subsidiary,
Universal Wireline, Inc., was sold in a cash transaction for $25.5
million. Except for inventory, the working capital of Universal
Wireline, Inc. was excluded from the sale and retained by a
subsidiary of the Company. Universal Wireline, Inc. was formed in
2010 to acquire the electric wireline business of Key Energy
Services, Inc. The results of operations of this business have been
presented as results of discontinued operations in these
consolidated financial statements. Upon being classified as held
for sale, the carrying value of&#xA0;the&#xA0;assets to be disposed
of were reduced to&#xA0;fair value less estimated costs to sell
resulting in a charge of $2.2 million in 2010. Due to the fact that
the carrying value of the assets had been adjusted to net
realizable value during 2010, no significant additional gain or
loss was recognized in connection with the sale in
2011.</font></font></p>
<p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Summarized operating
results from discontinued operations for the three months ended
March&#xA0;31, 2012, and 2011 are shown below (in
thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="83%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;
31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Electric wireline
revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,104</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss before income
taxes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(576</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income tax
benefit</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">209</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations, net of income tax</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(367</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
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<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e957-107759<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391110&amp;loc=d3e2941-110230<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1436-107760<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6390789&amp;loc=d3e2443-110228<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 43-48<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1474-107760<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e1020-107759<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1510-107760<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e1012-107759<br><br><br><br></p>
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  <head>
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    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Recently Issued Accounting Standards<br></strong></div>
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<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>14.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Recently Issued
Accounting Standards</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">In September 2011, the
Financial Accounting Standards Board (&#x201C;FASB&#x201D;) issued an
accounting standard update that simplifies how entities test
goodwill for impairment. This update permits an entity to first
assess qualitative factors to determine whether it is more likely
than not that the fair value of a reporting unit is less than its
carrying amount as a basis for determining whether it is necessary
to perform the two-step goodwill impairment test. Previous guidance
required an entity to test goodwill for impairment, on at least an
annual basis, by comparing the fair value of a reporting unit with
its carrying amount. If the fair value of a reporting unit is less
than its carrying amount, then the second step of the test must be
performed to measure the amount of the impairment loss, if any.
Under the amendments in this update, an entity is not required to
calculate the fair value of a reporting unit unless the entity
determines that it is more likely than not that its fair value is
less than its carrying amount. This update is effective for annual
and interim goodwill impairment tests performed for fiscal years
beginning after December&#xA0;15, 2011. Early adoption is permitted
if an entity&#x2019;s financial statements for the most recent
annual or interim period have not yet been issued. The Company
elected to early adopt this accounting standard update as of
December&#xA0;31, 2011 and such early adoption did not have a
material impact to the Company.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">In June 2011, the FASB
issued an accounting standard update that requires that all
non-owner changes in stockholders&#x2019; equity be presented either
in a single continuous statement of comprehensive income or in two
separate but consecutive statements. In the two-statement approach,
the first statement should present total net income and its
components followed consecutively by a second statement that should
present total other comprehensive income, the components of other
comprehensive income, and the total of comprehensive income.
Historically, these components of other comprehensive income and
total comprehensive income have been presented in the statement of
changes in stockholders&#x2019; equity by many companies, including
the Company. This requirement is effective for fiscal years, and
interim periods within those years, beginning after
December&#xA0;15, 2011, and will be effective for the Company in
the quarter ending March&#xA0;31, 2012. The adoption of this update
has resulted in the addition of a new consolidated statement of
comprehensive income being added to the Company&#x2019;s
consolidated financial statements beginning with the quarter ended
March&#xA0;31, 2012.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">In May 2011, the FASB
issued an accounting standard update to improve the comparability
of fair value measurements presented and disclosed in financial
statements prepared in accordance with United States GAAP and
International Financial Reporting Standards. The amendments in this
update do not require additional fair value measurements, but
provide additional guidance as to measuring fair value as well as
certain additional disclosure requirements. The requirements in
this update are effective during interim and annual periods
beginning after December&#xA0;15, 2011 and became effective for the
Company in the quarter ending March&#xA0;31, 2012. The adoption of
this update did not have a material impact on the Company&#x2019;s
disclosures included in its consolidated financial
statements.</font></font></p>
</div><span></span></td>
      </tr>
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                <p>Recently Issued Accounting Pronouncements Disclosure [Text Block]</p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Commitments, Contingencies and Other Matters<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock', window );">Commitments, Contingencies and Other Matters</a></td>
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<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>10.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Commitments,
Contingencies and Other Matters</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2012,
the Company maintained letters of credit in the aggregate amount of
$40.6 million for the benefit of various insurance companies as
collateral for retrospective premiums and retained losses which
could become payable under the terms of the underlying insurance
contracts. These letters of credit expire annually at various times
during the year and are typically renewed. As of March&#xA0;31,
2012, no amounts had been drawn under the letters of
credit.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">As of March&#xA0;31, 2012,
the Company had commitments to purchase approximately $338 million
of major equipment for its drilling and pressure pumping
businesses.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s
pressure pumping business has entered into agreements to purchase
minimum quantities of proppants from certain vendors. These
agreements expire in 2013 and 2016. As of March&#xA0;31, 2012, the
remaining obligation under these agreements is approximately $37.4
million, of which materials with a total purchase price of
approximately $8.4 million are expected to be delivered during the
last three quarters of 2012. In the event that the required minimum
quantities are not purchased during any contract year, the Company
would be required to make a liquidated damages payment to the
respective vendor for any shortfall.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">In November of 2011, the
Company&#x2019;s pressure pumping business entered into an agreement
with a proppant vendor to advance&#xA0;up to $12.0 million to such
vendor to finance the construction of certain processing
facilities. This advance is secured by the underlying processing
facilities and bears interest at an annual rate of 5.0%. Repayment
of the advance is to be made through discounts applied to purchases
from the vendor and repayment of all amounts advanced must be made
no later than October&#xA0;1, 2017. As of March&#xA0;31, 2012,
advances of approximately $5.1 million had been made under this
agreement and repayments of approximately $145,000 had been
received resulting in a balance outstanding of approximately $4.9
million.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company is party to
various legal proceedings arising in the normal course of its
business. The Company does not believe that the outcome of these
proceedings, either individually or in the aggregate, will have a
material adverse effect on its financial condition, results of
operations or cash flows.</font></font></p>
</div><span></span></td>
      </tr>
    </table>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for commitments and contingencies.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 450<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6952336&amp;loc=d3e14435-108349<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 460<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 8<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6398077&amp;loc=d3e12565-110249<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name FASB Interpretation (FIN)<br><br> -Number 14<br><br> -Paragraph 3<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 440<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6394976&amp;loc=d3e25287-109308<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 5<br><br> -Paragraph 9, 10, 11, 12<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.25)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 825<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6449706&amp;loc=d3e16207-108621<br><br><br><br></p>
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<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Goodwill and Intangible Assets<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock', window );">Goodwill and Intangible Assets</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>6.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Goodwill and Intangible
Assets</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Goodwill</i> &#x2014;
Goodwill by operating segment as of March&#xA0;31, 2012 and changes
for the three months then ended are as follows (in
thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="84%" align="center">
<tr>
<td width="72%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Contract</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Drilling</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Pressure</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Pumping</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance December&#xA0;31,
2011</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">86,234</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">67,575</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,809</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 3em"><font style="FONT-FAMILY: Times New Roman" size="2">Changes to
goodwill</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Balance March&#xA0;31,
2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">86,234</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">67,575</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,809</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">There were no accumulated
impairment losses as of March&#xA0;31, 2012 or December&#xA0;31,
2011.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Goodwill is evaluated at
least annually on December&#xA0;31 to determine if the fair value
of recorded goodwill has decreased below its carrying value. For
purposes of impairment testing, goodwill is evaluated at the
reporting unit level. The Company&#x2019;s reporting units for
impairment testing have been determined to be its operating
segments. Goodwill impairment is measured using a two-step
impairment test. The first step is to compare the fair value of an
entity&#x2019;s reporting units to the respective carrying value of
those reporting units. If the carrying value of a reporting unit
exceeds its fair value the second step of the impairment test is
performed whereby the fair value of the reporting unit is allocated
to its identifiable tangible and intangible assets and liabilities
with any remaining fair value representing the fair value of
goodwill. If the resulting fair value of goodwill is less than the
carrying value of goodwill, an impairment loss would be recognized
in the amount of the shortfall.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Intangible Assets</i>
&#x2014; Intangible assets were recorded in the pressure pumping
operating segment in connection with the fourth quarter 2010
acquisition of the assets of a pressure pumping business. As a
result of the purchase price allocation, the Company recorded
intangible assets related to a non-compete agreement and the
customer relationships acquired. These intangible assets were
recorded at fair value on the date of
acquisition.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The non-compete agreement
has a term of three years from October&#xA0;1, 2010. The value of
this agreement was estimated using a with and without scenario
where cash flows were projected through the term of the agreement
assuming the agreement is in place and compared to cash flows
assuming the non-compete agreement was not in place. The intangible
asset associated with the non-compete agreement is being amortized
on a straight-line basis over the three-year term of the agreement.
Amortization expense of $117,000 was recorded in the three months
ended March&#xA0;31, 2012 and 2011 associated with the non-compete
agreement.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The value of the customer
relationships was estimated using a multi-period excess earnings
model to determine the present value of the projected cash flows
associated with the customers in place at the time of the
acquisition and taking into account a contributory asset charge.
The resulting intangible asset is being amortized on a
straight-line basis over seven years. Amortization expense of
$911,000 was recorded in the three months ended March&#xA0;31, 2012
and 2011 associated with customer relationships.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
presents the gross carrying amount and accumulated amortization of
intangible assets as of March&#xA0;31, 2012 (in
thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="62%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Gross<br />
Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amount</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Accumulated</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amortization</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Net&#xA0;Carrying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Amount</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-compete
agreement</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,400</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(700</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">700</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Customer
relationships</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">25,500</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(5,463</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20,037</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total intangible
assets</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">26,900</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(6,163</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20,737</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final.  May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13816-109267<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16265-109275<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 42, 43, 44, 45, 46, 47<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16373-109275<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16323-109275<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13854-109267<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EGG">
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          <div style="width: 200px;"><strong>Income Taxes - Additional Information (Detail) (USD $)<br>In Millions, unless otherwise specified</strong></div>
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        <th class="th" colspan="1">3 Months Ended</th>
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                <p>Deferred Tax Liabilities, Increase (Decrease)</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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                <p>The amount of the deferred tax liability which was not recognized because of the exceptions to comprehensive recognition of deferred taxes.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 740<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6487024&amp;loc=d3e29054-158556<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6424122&amp;loc=d3e41874-109331<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 44<br><br> -Subparagraph c, d<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 942<br><br> -SubTopic 740<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6479915&amp;loc=d3e66715-112838<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 995<br><br> -SubTopic 740<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6503627&amp;loc=d3e59836-110443<br><br><br><br></p>
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                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>instant</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
    </div>
  </body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>62
<FILENAME>R13.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Property and Equipment<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock', window );">Property and Equipment</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>4.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Property and
Equipment</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Property and equipment
consisted of the following at March&#xA0;31, 2012 and
December&#xA0;31, 2011 (in thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="72%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Equipment</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,899,102</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,730,925</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural gas
properties</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">137,548</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">131,812</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Buildings</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">64,426</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">64,090</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Land</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,467</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,467</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5,112,543</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,938,294</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Less accumulated
depreciation and depletion</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,804,280</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,771,028</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Property and equipment,
net</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,308,263</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,167,266</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.13-14)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Principles Board Opinion (APB)<br><br> -Number 12<br><br> -Paragraph 5<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391110&amp;loc=d3e2921-110230<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>nonnum:textBlockItemType</td>
                  </tr>
                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
                  </tr>
                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
                </table>
              </div>
            </div>
          </td>
        </tr>
      </table>
    </div>
  </body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>63
<FILENAME>R14.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Business Segments<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SegmentReportingDisclosureTextBlock', window );">Business Segments</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>5.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Business
Segments</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company&#x2019;s
revenues, operating profits and identifiable assets are primarily
attributable to three business segments: (i)&#xA0;contract drilling
of oil and natural gas wells, (ii)&#xA0;pressure pumping services
and (iii)&#xA0;the investment, on a working interest basis, in oil
and natural gas properties. Each of these segments represents a
distinct type of business. These segments have separate management
teams which report to the Company&#x2019;s chief operating decision
maker. The results of operations in these segments are regularly
reviewed by the chief operating decision maker for purposes of
determining resource allocation and assessing performance. As
discussed in Note 2, included in discontinued operations for the
three months ended March&#xA0;31, 2011 are the operating results
for an electric wireline business that was acquired on
October&#xA0;1, 2010 and sold in January 2011. Separate financial
data for each of our business segments is provided in the table
below (in thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="78%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Revenues:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">490,703</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">378,025</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">241,722</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">179,659</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14,717</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10,387</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total segment
revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">747,142</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">568,071</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Elimination of intercompany
revenues (a)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(1,221</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(667</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">745,921</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">567,404</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income before income
taxes:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">111,771</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">80,519</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">46,787</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">41,378</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,518</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,818</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">166,076</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">126,715</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and
other</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(10,812</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(10,772</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Net gain on asset disposals
(b)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2,400</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,604</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest income</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">54</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">43</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Interest expense</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(4,582</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(3,889</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">55</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">119</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations before income taxes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,191</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">113,820</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="74%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Identifiable
assets:</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Contract
drilling</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,384,088</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,252,116</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Pressure pumping</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">789,213</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">748,643</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Oil and natural
gas</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">48,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">44,990</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and other
(c)</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">142,413</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">176,152</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total assets</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,363,832</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,221,901</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
<p style="BORDER-BOTTOM: #000000 0.5pt solid; LINE-HEIGHT: 8px; MARGIN-TOP: 0px; WIDTH: 10%; MARGIN-BOTTOM: 2px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(a)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Consists of contract
drilling intercompany revenues for drilling services provided to
the oil and natural gas exploration and production
segment.</font></td>
</tr>
</table>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(b)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Net gains or losses
associated with the disposal of assets relate to corporate strategy
decisions of the executive management group. Accordingly, the
related gains or losses have been separately presented and excluded
from the results of specific segments.</font></td>
</tr>
</table>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">(c)</font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2">Corporate and other assets
primarily include cash on hand, income taxes receivable and certain
deferred tax assets.</font></td>
</tr>
</table>
</div><span></span></td>
      </tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 12<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8595-108599<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8538-108599<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 33<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8971-108599<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 34<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8981-108599<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 29<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8864-108599<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8380-108599<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 35<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8984-108599<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 41<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e9038-108599<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 32<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8933-108599<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 131<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 11: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 30<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8906-108599<br><br><br><br>Reference 12: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 26<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8844-108599<br><br><br><br>Reference 13: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 40<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e9031-108599<br><br><br><br>Reference 14: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 42<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e9054-108599<br><br><br><br>Reference 15: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 280<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 31<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6534315&amp;loc=d3e8924-108599<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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          <div style="width: 200px;"><strong>Accrued Expenses<br></strong></div>
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        <th class="th" colspan="1">3 Months Ended</th>
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          <div>Mar. 31, 2012</div>
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<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
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<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>7.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Accrued
Expenses</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Accrued expenses consisted
of the following at March&#xA0;31, 2012 and December&#xA0;31, 2011
(in thousands):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="74%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>December&#xA0;31,</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Salaries, wages, payroll
taxes and benefits</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">38,601</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">58,692</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Workers&#x2019; compensation
liability</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">65,778</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">66,121</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Property, sales, use and
other taxes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12,591</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">11,850</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Insurance, other than
workers&#x2019; compensation</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,988</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,012</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Accrued interest
payable</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">8,429</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4,937</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred
revenue&#x2014;current</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,944</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,229</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">2009 Performance Unit
Awards</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,719</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,640</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">10,392</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,148</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">152,442</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">164,629</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
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<td>&#xA0;</td>
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<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Deferred revenue was
recorded in the fourth quarter of 2010 in the purchase price
allocation associated with the Company&#x2019;s acquisition of a
pressure pumping business. The deferred revenue relates to
out-of-market pricing agreements that were in place at the acquired
business at the time of the acquisition. The deferred revenue will
be recognized as pressure pumping revenue over the remaining term
of the pricing agreements. Deferred revenue of approximately $1.8
million and $2.9 million was recognized in the three months ended
March&#xA0;31, 2012 and 2011, respectively, related to these
pricing agreements.</font></font></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 19<br><br> -Subparagraph a<br><br> -Article 5<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 20, 24<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.19(a),20,24)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br></p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EDLAC">
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          <div style="width: 200px;"><strong>Subsequent Event - Additional Information (Detail) (Subsequent Event, USD $)<br>In Millions, unless otherwise specified</strong></div>
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</div>
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          <div>Sale

</div>
          <div>A subsidiary of the Company</div>
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          <div>Tetra Technologies Inc

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          <div>Sale

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          <div>A subsidiary of the Company</div>
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                <p>Working capital</p>
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                <p>No definition available.</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The gains (losses) included in earnings resulting from the sale or disposal of tangible assets. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 47<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6391110&amp;loc=d3e2941-110230<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br></p>
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                <p>Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.</p>
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  <head>
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    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
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<font style="FONT-FAMILY: Times New Roman" size="2"><i>Cash
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&#xA0;</p>
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<td width="76%"></td>
<td valign="bottom" width="8%"></td>
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<td></td>
<td></td>
<td valign="bottom" width="8%"></td>
<td></td>
<td></td>
<td></td>
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<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Per&#xA0;Share</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
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<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="2"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1">(in&#xA0;thousands)</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
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<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2011:</b></font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
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<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Paid on March&#xA0;30,
2011</font></p>
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<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
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<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
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<td width="76%"></td>
<td valign="bottom" width="8%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="8%"></td>
<td></td>
<td></td>
<td></td>
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<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Per&#xA0;Share</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
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<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
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<td valign="top">
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Paid on March&#xA0;30,
2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.05</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,788</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
</table>
</div><span></span></td>
      </tr>
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    <div style="display: none;">
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Dividend Activity</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>pten_DividendActivityTextBlock</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>pten_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>nonnum:textBlockItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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            </div>
          </td>
        </tr>
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  </body>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>67
<FILENAME>R51.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0ECEAE">
      <tr>
        <th class="tl" colspan="1" rowspan="1">
          <div style="width: 200px;"><strong>Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems', window );"><strong>Acquired Finite-Lived Intangible Assets [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsGross', window );">Gross Carrying Amount</a></td>
        <td class="nump">$ 26,900<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization', window );">Accumulated Amortization</a></td>
        <td class="num">(6,163)<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Net Carrying Amount</a></td>
        <td class="nump">20,737<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Non-compete agreement</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems', window );"><strong>Acquired Finite-Lived Intangible Assets [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsGross', window );">Gross Carrying Amount</a></td>
        <td class="nump">1,400<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization', window );">Accumulated Amortization</a></td>
        <td class="num">(700)<span></span></td>
      </tr>
      <tr class="reu">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Net Carrying Amount</a></td>
        <td class="nump">700<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Customer relationships</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems', window );"><strong>Acquired Finite-Lived Intangible Assets [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsGross', window );">Gross Carrying Amount</a></td>
        <td class="nump">25,500<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization', window );">Accumulated Amortization</a></td>
        <td class="num">(5,463)<span></span></td>
      </tr>
      <tr class="rou">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Net Carrying Amount</a></td>
        <td class="nump">$ 20,037<span></span></td>
      </tr>
    </table>
    <div style="display: none;">
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph a(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (a)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16323-109275<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsGross">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph a(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (a)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16323-109275<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FiniteLivedIntangibleAssetsGross</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsNet">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph a(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (a)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905858&amp;loc=d3e16323-109275<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_FiniteLivedIntangibleAssetsNet</nobr></td>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>68
<FILENAME>R21.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Income Taxes<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxDisclosureTextBlock', window );">Income Taxes</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>12.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Income
Taxes</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">On January&#xA0;1, 2010,
the Company converted its Canadian operations from a Canadian
branch to a controlled foreign corporation for Federal income tax
purposes. Because the statutory tax rates in Canada are lower than
those in the United States, this transaction triggered a $5.1
million reduction in the Company&#x2019;s deferred tax liabilities,
which is being amortized as a reduction to deferred income tax
expense over the weighted average remaining useful life of the
Canadian assets.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">As a result of the above
conversion, the Company&#x2019;s Canadian assets are no longer
subject to United States taxation, provided that the related
unremitted earnings are permanently reinvested in Canada. Effective
January&#xA0;1, 2010, the Company has elected to permanently
reinvest these unremitted earnings in Canada, and intends to do so
for the foreseeable future. As a result, no deferred United States
federal or state income taxes have been provided on such unremitted
foreign earnings, which totaled approximately $27.0 million as of
March&#xA0;31, 2012.</font></font></p>
</div><span></span></td>
      </tr>
    </table>
    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxDisclosureTextBlock">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32537-109319<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 136, 172<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 43, 44, 45, 46, 47, 48, 49<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Paragraph h<br><br> -Article 4<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32559-109319<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 9<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32639-109319<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 15<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32718-109319<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(h))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Discontinued Operations (Tables)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
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      <tr>
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          <div>Mar. 31, 2012</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock', window );">Summary of Operating Results from Discontinued Operations</a></td>
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<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Summarized
operating results from discontinued operations for the three months
ended March&#xA0;31, 2012, and 2011 are shown below (in
thousands):</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="83%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three&#xA0;Months&#xA0;Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;
31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Electric wireline
revenues</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,104</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss before income
taxes</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(576</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income tax
benefit</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">209</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations, net of income tax</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(367</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
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</div><span></span></td>
      </tr>
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        <tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e957-107759<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1474-107760<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 43, 44, 45, 47, 48<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 360<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6390789&amp;loc=d3e2443-110228<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1510-107760<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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<html>
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=us-ascii">
    <link rel="StyleSheet" type="text/css" href="report.css"><script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script></head>
  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EGEAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Goodwill by Operating Segment (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillLineItems', window );"><strong>Goodwill [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Beginning Balance</a></td>
        <td class="nump">$ 153,809<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillPeriodIncreaseDecrease', window );">Changes to goodwill</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Ending Balance</a></td>
        <td class="nump">153,809<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Contract Drilling</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillLineItems', window );"><strong>Goodwill [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Beginning Balance</a></td>
        <td class="nump">86,234<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillPeriodIncreaseDecrease', window );">Changes to goodwill</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Ending Balance</a></td>
        <td class="nump">86,234<span></span></td>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Pressure Pumping</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillLineItems', window );"><strong>Goodwill [Line Items]</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Beginning Balance</a></td>
        <td class="nump">67,575<span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GoodwillPeriodIncreaseDecrease', window );">Changes to goodwill</a></td>
        <td class="text">&nbsp;&nbsp;<span></span></td>
      </tr>
      <tr class="ro">
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        <td class="nump">$ 67,575<span></span></td>
      </tr>
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    <div style="display: none;">
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Goodwill">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph e<br><br> -Clause 1<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 43<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 141R<br><br> -Paragraph 68<br><br> -Subparagraph l<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph e<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 141R<br><br> -Paragraph 34<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13816-109267<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6388280&amp;loc=d3e13770-109266<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 141R<br><br> -Paragraph 72<br><br> -Subparagraph d<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_Goodwill</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_GoodwillLineItems</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:stringItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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            </div>
          </td>
        </tr>
      </table>
      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GoodwillPeriodIncreaseDecrease">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The change during the reporting period in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment during the period, goodwill written off related to the sale of a business or other adjustments to goodwill.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 142<br><br> -Paragraph 45<br><br> -Subparagraph e<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 350<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6905597&amp;loc=d3e13816-109267<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 141R<br><br> -Paragraph 72<br><br> -Subparagraph d<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_GoodwillPeriodIncreaseDecrease</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td>xbrli:monetaryItemType</td>
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  <head>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EJCAE">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Restricted Stock Activity (Detail) (Restricted Stock Awards, USD $)<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="rh">
        <td class="pl" style="border-bottom: 0px;" valign="top">
          <div class="a">Restricted Stock Awards</div>
        </td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward', window );"><strong>Shares</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber', window );">Outstanding at beginning of period</a></td>
        <td class="nump">1,213,799<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod', window );">Granted</a></td>
        <td class="nump">12,000<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod', window );">Vested</a></td>
        <td class="num">(59,459)<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod', window );">Forfeited</a></td>
        <td class="num">(5,136)<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber', window );">Outstanding at end of period</a></td>
        <td class="nump">1,161,204<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract', window );"><strong>Weighted Average Grant Date Fair Value</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue', window );">Outstanding at beginning of period</a></td>
        <td class="nump">$ 24.13<span></span></td>
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      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue', window );">Granted</a></td>
        <td class="nump">$ 19.98<span></span></td>
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      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue', window );">Vested</a></td>
        <td class="nump">$ 15.49<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue', window );">Forfeited</a></td>
        <td class="nump">$ 23.70<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue', window );">Outstanding at end of period</a></td>
        <td class="nump">$ 24.53<span></span></td>
      </tr>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
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                    <td>xbrli:stringItemType</td>
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                    <td>na</td>
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                    <td>duration</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(e)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(1)(iv)(3)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td><strong> Balance Type:</strong></td>
                    <td>na</td>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(e)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(3)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue</nobr></td>
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                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>num:perShareItemType</td>
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                    <td>na</td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</nobr></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:sharesItemType</td>
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                    <td>na</td>
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                    <td>duration</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(c)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph c(1)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(1)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(i)-(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
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                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div>
                <table border="0" cellpadding="0" cellspacing="0">
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                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(a)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(b)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(i)-(ii)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 123R<br><br> -Paragraph A240<br><br> -Subparagraph b(2)(d)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 718<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 2<br><br> -Subparagraph (c)(2)(iii)(2)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6415400&amp;loc=d3e5070-113901<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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                    <td><strong> Name:</strong></td>
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                    <td>na</td>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EIDAC">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)<br>In Thousands, unless otherwise specified</strong></div>
        </th>
        <th class="th" colspan="2">3 Months Ended</th>
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      <tr>
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          <div>Mar. 31, 2012</div>
        </th>
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          <div>Mar. 31, 2011</div>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProfitLoss', window );">Net income</a></td>
        <td class="nump">$ 97,274<span></span></td>
        <td class="nump">$ 71,252<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract', window );"><strong>Other comprehensive income, net of taxes of $0 and $0, respectively:</strong></a></td>
        <td class="text">&#xA0;<span></span></td>
        <td class="text">&#xA0;<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease', window );">Foreign currency translation adjustment</a></td>
        <td class="nump">2,554<span></span></td>
        <td class="nump">2,698<span></span></td>
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        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ComprehensiveIncomeNetOfTax', window );">Total comprehensive income</a></td>
        <td class="nump">$ 99,828<span></span></td>
        <td class="nump">$ 73,950<span></span></td>
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 220<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e540-108580<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 30<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph A5<br><br> -Appendix A<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph c(3)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 8, 9, 10, 11, 12, 13, 14<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Comprehensive Income<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6508144<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Net Income<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6518256<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 220<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6920043&amp;loc=d3e557-108580<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Other Comprehensive Income<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6519514<br><br><br><br></p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
      <tr>
        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Basis of Consolidation and Presentation<br></strong></div>
        </th>
        <th class="th" colspan="1">3 Months Ended</th>
      </tr>
      <tr>
        <th class="th">
          <div>Mar. 31, 2012</div>
        </th>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock', window );">Basis of Consolidation and Presentation</a></td>
        <td class="text"><div>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>1.</b></font></td>
<td valign="top" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Basis of Consolidation
and Presentation</b></font></td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The unaudited interim
consolidated financial statements include the accounts of
Patterson-UTI Energy, Inc. (the &#x201C;Company&#x201D;) and its
wholly-owned subsidiaries. All significant intercompany accounts
and transactions have been eliminated. Except for wholly-owned
subsidiaries, the Company has no controlling financial interests in
any entity which would require consolidation.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The unaudited interim
consolidated financial statements have been prepared by management
of the Company pursuant to the rules and regulations of the
Securities and Exchange Commission. Certain information and
footnote disclosures normally included in financial statements
prepared in accordance with accounting principles generally
accepted in the United States of America have been omitted pursuant
to such rules and regulations, although the Company believes the
disclosures included either on the face of the financial statements
or herein are sufficient to make the information presented not
misleading. In the opinion of management, all adjustments which are
of a normal recurring nature considered necessary for a fair
statement of the information in conformity with accounting
principles generally accepted in the United States of America have
been included. The Unaudited Consolidated Balance Sheet as of
December&#xA0;31, 2011, as presented herein, was derived from the
audited consolidated balance sheet of the Company, but does not
include all disclosures required by accounting principles generally
accepted in the United States of America. These unaudited
consolidated financial statements should be read in conjunction
with the consolidated financial statements and related notes
included in the Company&#x2019;s Annual Report on Form&#xA0;10-K for
the fiscal year ended December&#xA0;31, 2011. The results of
operations for the three months ended March&#xA0;31, 2012 are not
necessarily indicative of the results to be expected for the full
year.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The U.S.&#xA0;dollar is the
functional currency for all of the Company&#x2019;s operations
except for its Canadian operations, which uses the Canadian dollar
as its functional currency. The effects of exchange rate changes
are reflected in accumulated other comprehensive income, which is a
separate component of stockholders&#x2019; equity.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The carrying values of cash
and cash equivalents, trade receivables and accounts payable
approximate fair value.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company provides a dual
presentation of its net income (loss) per common share in its
unaudited consolidated statements of operations: Basic net income
(loss) per common share (&#x201C;Basic EPS&#x201D;) and diluted net
income (loss) per common share (&#x201C;Diluted
EPS&#x201D;).</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Basic EPS excludes dilution
and is computed by first allocating earnings between common
stockholders and holders of non-vested shares of restricted stock.
Basic EPS is then determined by dividing the earnings attributable
to common stockholders by the weighted average number of common
shares outstanding during the period, excluding non-vested shares
of restricted stock.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted EPS is based on the
weighted average number of common shares outstanding plus the
dilutive effect of potential common shares, including stock
options, non-vested shares of restricted stock and restricted stock
units. The dilutive effect of stock options and restricted stock
units is determined using the treasury stock method. The dilutive
effect of non-vested shares of restricted stock is based on the
more dilutive of the treasury stock method or the two-class method,
assuming a reallocation of undistributed earnings to common
stockholders after considering the dilutive effect of potential
common shares other than non-vested shares of restricted
stock.</font></font></p>
<p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The following table
presents information necessary to calculate income from continuing
operations per share, loss from discontinued operations per share
and net income per share for the three months ended March&#xA0;31,
2012 and 2011 as well as potentially dilutive securities excluded
from the weighted average number of diluted common shares
outstanding, as their inclusion would have been anti-dilutive (in
thousands, except per share amounts):</font></font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%" align="center">
<tr>
<td width="84%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="6" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Three Months
Ended</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>March&#xA0;31,</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2012</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2011</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>BASIC
EPS:</b></font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">97,274</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,619</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjust for income
attributed to holders of non-vested restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(742</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(501</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations, net</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(367</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjust for loss attributed
to holders of non-vested restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Loss from discontinued
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(364</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,625</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic income from
continuing operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic loss from
discontinued operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Basic net income per common
share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>DILUTED
EPS:</b></font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Income from continuing
operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,118</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Add incremental earnings
related to potential common shares</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">4</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Adjusted income from
continuing operations attributed to common stockholders</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">96,532</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">71,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
common shares outstanding, excluding non-vested shares of
restricted stock</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,625</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">153,122</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Add dilutive effect of
potential common shares</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">776</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,531</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Weighted average number of
diluted common shares outstanding</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">155,401</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">154,653</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted income from
continuing operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted loss from
discontinued operations per common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.00</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Diluted net income per
common share</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.62</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.46</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Potentially dilutive
securities excluded as anti-dilutive</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3,229</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">725</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
    </table>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock">
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.</p>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EIEAC">
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          <div style="width: 200px;"><strong>Cash Dividends (Detail) (USD $)<br>In Thousands, except Per Share data, unless otherwise specified</strong></div>
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                <p>Dividend Payment Date Day Month And Year</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>No definition available.</p>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Aggregate dividends paid during the period for each share of common stock outstanding.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br></p>
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                <p>Equity impact of common stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0ENH">
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        <th class="tl" colspan="1" rowspan="2">
          <div style="width: 200px;"><strong>Stock-based Compensation (Tables)<br></strong></div>
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<font style="FONT-FAMILY: Times New Roman" size="2">Weighted-average assumptions used to estimate the grant date
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ended March&#xA0;31, 2012 and 2011 follow:</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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years)</font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">5.00</font></td>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
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<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.93</font></td>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.83</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">2.01</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">%&#xA0;</font></td>
</tr>
</table>
</div><span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock', window );">Stock Option Activity</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Stock option
activity from January&#xA0;1, 2012 to March&#xA0;31, 2012
follows:</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="78%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Underlying</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Exercise</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Price</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Outstanding at
January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,081,295</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.73</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">40,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.98</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exercised</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(13,300</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">14.64</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Outstanding at
March&#xA0;31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,107,995</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.74</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Exercisable at
March&#xA0;31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">6,279,644</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">20.52</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
      <tr class="re">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock', window );">Restricted Stock Activity</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Restricted
stock activity from January&#xA0;1, 2012 to March&#xA0;31, 2012
follows:</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="76%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Grant&#xA0;Date</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair
Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
outstanding at January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,213,799</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.13</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">12,000</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">19.98</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Vested</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(59,459</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">15.49</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Forfeited</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">(5,136</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">)&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23.70</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 1px solid">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
outstanding at March 31, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">1,161,204</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">24.53</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">&#xA0;&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
<td valign="bottom">&#xA0;</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: #000000 3px double">&#xA0;</p>
</td>
<td>&#xA0;</td>
</tr>
</table>
</div><span></span></td>
      </tr>
      <tr class="ro">
        <td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock', window );">Restricted Stock Unit Activity</a></td>
        <td class="text"><div>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">Restricted
stock unit activity from January&#xA0;1, 2012 to March&#xA0;31,
2012 follows:</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
&#xA0;</p>
<table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center">
<tr>
<td width="79%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Shares</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Weighted</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Average</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Grant&#xA0;Date</b></font><br />
<font style="FONT-FAMILY: Times New Roman" size="1"><b>Fair
Value</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Non-vested restricted stock
units outstanding at January&#xA0;1, 2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">17,501</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">23.47</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Granted</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Vested</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">&#x2014;&#xA0;&#xA0;</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Forfeited</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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          <div style="width: 200px;"><strong>Summary of Operating Results from Discontinued Operations (Detail) (USD $)<br>In Thousands, unless otherwise specified</strong></div>
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          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 05<br><br> -Paragraph 15<br><br> -Article 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 43<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e957-107759<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 47<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Paragraph 13<br><br> -Article 7<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 944<br><br> -SubTopic 225<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.7-04.12)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6879464&amp;loc=d3e573970-122913<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
                  </tr>
                  <tr>
                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>credit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
                  </tr>
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          </td>
        </tr>
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      <table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation">
        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
        </tr>
        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6892542&amp;loc=d3e957-107759<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 10<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6907707&amp;loc=d3e32672-109319<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 43<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (b),(c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 47<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 109<br><br> -Paragraph 46<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 740<br><br> -SubTopic 20<br><br> -Section 45<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6909487&amp;loc=d3e38679-109324<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation</nobr></td>
                  </tr>
                  <tr>
                    <td style="padding-right: 4px;"><nobr><strong> Namespace Prefix:</strong></nobr></td>
                    <td>us-gaap_</td>
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                    <td><strong> Data Type:</strong></td>
                    <td>xbrli:monetaryItemType</td>
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                  <tr>
                    <td><strong> Balance Type:</strong></td>
                    <td>debit</td>
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                  <tr>
                    <td><strong> Period Type:</strong></td>
                    <td>duration</td>
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        <tr>
          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 144<br><br> -Paragraph 47<br><br> -Subparagraph c<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 205<br><br> -SubTopic 20<br><br> -Section 50<br><br> -Paragraph 1<br><br> -Subparagraph (c)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue</nobr></td>
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                    <td><strong> Data Type:</strong></td>
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                    <td><strong> Balance Type:</strong></td>
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            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 810<br><br> -SubTopic 10<br><br> -Section 45<br><br> -Paragraph 19<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6921628&amp;loc=SL4569616-111683<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 29<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 28<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 51<br><br> -Paragraph 38<br><br> -Subparagraph b(2)<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
                <table border="0" cellpadding="0" cellspacing="0">
                  <tr>
                    <td><strong> Name:</strong></td>
                    <td><nobr>us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity</nobr></td>
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                  <tr>
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  <body><span style="display: none;">v2.4.0.6</span><table class="report" border="0" cellspacing="2" id="ID0EAD">
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<td valign="top" width="4%" align="left"><font style="FONT-FAMILY: Times New Roman" size="2"><b>11.</b></font></td>
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<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2"><i>Cash Dividends
&#x2014;</i> The Company paid cash dividends during the three months
ended March&#xA0;31, 2011 and 2012 as follows:</font></font></p>
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<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
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<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Per&#xA0;Share</b></font></td>
<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1">(in&#xA0;thousands)</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2"><b>2011:</b></font></p>
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<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Paid on March&#xA0;30,
2011</font></p>
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<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
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<font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;</font></p>
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<td valign="bottom" width="8%"></td>
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<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Per&#xA0;Share</b></font></td>
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<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>Total</b></font></td>
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<td valign="bottom"><font size="1">&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1">(in&#xA0;thousands)</font></td>
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<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
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<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Paid on March&#xA0;30,
2012</font></p>
</td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">0.05</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font size="1">&#xA0;&#xA0;</font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">7,788</font></td>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="2">&#xA0;&#xA0;</font></td>
</tr>
</table>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">On April&#xA0;25, 2012, the
Company&#x2019;s Board of Directors approved a cash dividend on its
common stock in the amount of $0.05 per share to be paid on
June&#xA0;29, 2012 to holders of record as of June&#xA0;15, 2012.
The amount and timing of all future dividend payments, if any, is
subject to the discretion of the Board of Directors and will depend
upon business conditions, results of operations, financial
condition, terms of the Company&#x2019;s credit facilities and other
factors.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">On August&#xA0;1, 2007, the
Company&#x2019;s Board of Directors approved a stock buyback program
authorizing purchases of up to $250 million of the Company&#x2019;s
common stock in open market or privately negotiated transactions.
No shares were purchased during the three months ended
March&#xA0;31, 2012 under the program. As of March&#xA0;31, 2012,
the Company is authorized to purchase approximately $113 million of
the Company&#x2019;s outstanding common stock under the program.
Shares purchased under the program are accounted for as treasury
stock.</font></font></p>
<p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2"><font style="FONT-FAMILY: Times New Roman" size="2">The Company purchased 683
shares of treasury stock from employees during the three months
ended March&#xA0;31, 2012. These shares were purchased at fair
market value upon the vesting of restricted stock to provide the
employees with the funds necessary to satisfy payroll tax
withholding obligations. The total purchase price for these shares
was approximately $15,000. These purchases were made pursuant to
the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term
Incentive Plan and not pursuant to the stock buyback
program.</font></font></p>
</div><span></span></td>
      </tr>
    </table>
    <div style="display: none;">
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          <td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td>
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        <tr>
          <td>
            <div class="body" style="padding: 2px;"><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div>
                <p>The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable).  Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.</p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;">
                <p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 04<br><br> -Article 3<br><br><br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 02<br><br> -Paragraph 29, 30, 31<br><br> -Article 5<br><br><br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 310<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 2<br><br> -Subparagraph (SAB TOPIC 4.E)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6228006&amp;loc=d3e74512-122707<br><br><br><br>Reference 4: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 4<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21484-112644<br><br><br><br>Reference 5: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 4<br><br> -Subparagraph (SAB TOPIC 4.C)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187143-122770<br><br><br><br>Reference 6: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 129<br><br> -Paragraph 2, 3, 4, 5, 6, 7, 8<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 7: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Glossary Preferred Stock<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6521494<br><br><br><br>Reference 8: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Statement of Financial Accounting Standard (FAS)<br><br> -Number 5<br><br> -Paragraph 15<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 9: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Section 08<br><br> -Article 4<br><br><br><br>Reference 10: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.3-04)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6959260&amp;loc=d3e187085-122770<br><br><br><br>Reference 11: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 4<br><br> -Section C<br><br><br><br>Reference 12: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 5<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21488-112644<br><br><br><br>Reference 13: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 210<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.5-02.29-31)<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br><br><br>Reference 14: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Regulation S-X (SX)<br><br> -Number 210<br><br> -Article 4<br><br> -Section 08<br><br> -Paragraph d<br><br><br><br>Reference 15: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher SEC<br><br> -Name Staff Accounting Bulletin (SAB)<br><br> -Number Topic 4<br><br> -Section E<br><br><br><br>Reference 16: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 30<br><br> -Section 50<br><br> -Paragraph 2<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6405834&amp;loc=d3e23285-112656<br><br><br><br>Reference 17: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 3<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21475-112644<br><br><br><br>Reference 18: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 235<br><br> -SubTopic 10<br><br> -Section S99<br><br> -Paragraph 1<br><br> -Subparagraph (SX 210.4-08.(d),(e))<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6881521&amp;loc=d3e23780-122690<br><br><br><br>Reference 19: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher AICPA<br><br> -Name Accounting Research Bulletin (ARB)<br><br> -Number 43<br><br> -Chapter 1<br><br> -Section B<br><br> -Paragraph 7, 11A<br><br> -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.<br><br><br><br>Reference 22: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 6<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21506-112644<br><br><br><br>Reference 23: http://www.xbrl.org/2003/role/presentationRef<br><br> -Publisher FASB<br><br> -Name Accounting Standards Codification<br><br> -Topic 505<br><br> -SubTopic 10<br><br> -Section 50<br><br> -Paragraph 11<br><br> -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21564-112644<br><br><br><br></p>
              </div><a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;">
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