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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables set forth by level within the fair value hierarchy the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis:

	At fair value as of June 30, 2013
	Level 1				Level 2				Level 3				Total
	(In thousands)
Assets:
Money market funds	$	36,442			$	—			$	—			$	36,442
Commodity derivative instruments (see Note 6)	—				17,907				—				17,907
Total assets	$	36,442			$	17,907			$	—			$	54,349
Liabilities:
Commodity derivative instruments (see Note 6)	$	—			$	291			$	—			$	291
Total liabilities	$	—			$	291			$	—			$	291
	At fair value as of December 31, 2012
	Level 1				Level 2				Level 3				Total
	(In thousands)
Assets:
Money market funds	$	66,387			$	—			$	—			$	66,387
Commodity derivative instruments (see Note 6)	—				23,997				—				23,997
Total assets	$	66,387			$	23,997			$	—			$	90,384
Liabilities:
Commodity derivative instruments (see Note 6)	$	—			$	1,428			$	—			$	1,428
Total liabilities	$	—			$	1,428			$	—			$	1,428

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258

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