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Inventory (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consists of the following:

		March 31, 2013				December 31, 2012
		(In thousands)
Equipment and materials		$	19,510			$	16,438
Crude oil inventory			5,896				4,269
Total inventory		$	25,406			$	20,707

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- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

-Article 5

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