XML 57 R8.htm IDEA: XBRL DOCUMENT v2.4.0.6

Consolidated Statements of Cash Flows (Parenthetical) (5.5% Convertible Senior Subordinated Notes due 2012)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
5.5% Convertible Senior Subordinated Notes due 2012
Interest rate on convertible debentures	5.50%	5.50%	5.50%

X

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant