Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Measurements

Schedule of Company's assets and liabilities that are measured at fair value on a recurring basis

	Fair Value Measurements Using:
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Significant Unobservable Inputs
	(Level 1)		(Level 2)			(Level 3)		Total
			(In thousands)
March 31, 2015
Assets:
Commodity derivatives	$	—	$	241,244		$	—	$	241,244
Interest rate derivatives	—		100			—		100
Liabilities:
Commodity derivatives	—		(7,731		)	—		(7,731		)
Interest rate derivatives	—		(1,063		)	—		(1,063		)
Total	$	—	$	232,550		$	—	$	232,550
December 31, 2014
Assets:
Commodity derivatives	$	—	$	252,485		$	—	$	252,485
Liabilities:
Interest rate derivatives	—		(789		)	—		(789		)
Total	$	—	$	251,696		$	—	$	251,696

Schedule of carrying values and fair values of financial instruments that are not carried at fair value

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
			(In thousands)
Long-term debt	$	794,434	$	782,750	$	794,269	$	755,000