Derivatives and Risk Management (Tables)

12 Months Ended

Dec. 31, 2013

Derivatives And Risk Management [Abstract]

Balance Sheet Classification of Derivative Financial Instruments

	Derivative Assets
	December 31, 2013			December 31, 2012
	Balance Sheet Classification	Fair Value		Balance Sheet Classification	Fair Value
	(in thousands)
Derivatives designated as hedging    instruments:
Fixed price swaps	Derivative asset	$	20,631	Derivative asset	$	279,443
Fixed price swaps	Other long-term assets		–	Other long-term assets		8,550
Total derivatives designated as hedging   instruments		$	20,631		$	287,993
Derivatives not designated as hedging   instruments:
Basis swaps	Derivative asset	$	12,858	Derivative asset	$	3,250
Fixed price swaps	Derivative asset		37,382	Derivative asset		–
Basis swaps	Other long-term assets		107	Other long-term assets		901
Interest rate swaps	Other long-term assets		7,525	Other long-term assets		–
Total derivatives not designated as   hedging instruments		$	57,872		$	4,151
Total derivative assets		$	78,503		$	292,144
	Derivative Liabilities
	December 31, 2013			December 31, 2012
	Balance Sheet Classification	Fair Value		Balance Sheet Classification	Fair Value
	(in thousands)
Derivatives designated as hedging   instruments:
Fixed price swaps	Other current liabilities	$	3,884	Other current liabilities	$	–
Total derivatives designated as hedging   instruments		$	3,884		$	–
Derivatives not designated as hedging   instruments:
Basis swaps	Other current liabilities	$	1,501	Other current liabilities	$	138
Fixed price swaps	Other current liabilities		185	Other current liabilities		–
Fixed price call options	Other long-term liabilities		30,388	Other long-term liabilities		4,128
Interest rate swaps	Other current liabilities		1,520	Other current liabilities		–
Interest rate swaps	Other long-term liabilities		3,012	Other long-term liabilities		–
Total derivatives not designated as   hedging instruments		$	36,606		$	4,266
Total derivative liabilities		$	40,490		$	4,266

Fixed Price Swaps, Volumes of Natural Gas Production (in Bcf)

Year	Fixed price swaps	Fixed price swaps not designated for hedge accounting	Total
2014	200.7	181.6	382.3

Before Tax Effect of Cash Flow Hedges on Consolidated Financial Statements

			Gain Recognized in Other Comprehensive Income Comprehensive Income
			(Effective Portion)
		For the years ended
		December 31,
Derivative Instrument		2013		2012
		(in thousands)
Fixed price swaps		$	37,931	$	178,660
Costless-collars		$	–	$	39,247
	Classification of Gain	Gain Reclassified from Accumulated Other Comprehensive Income into Earnings
	Reclassified from Accumulated	(Effective Portion)
	Other Comprehensive Income	For the years ended
	into Earnings	December 31,
Derivative Instrument	(Effective Portion)	2013		2012
		(in thousands)
Fixed price swaps	Gas Sales	$	309,177	$	413,410
Costless-collars	Gas Sales	$	–	$	218,119
		Gain (Loss) Recognized in Earnings
		(Ineffective Portion)
	Classification of Gain (Loss)	For the years ended
	Recognized in Earnings	December 31,
Derivative Instrument	(Ineffective Portion)	2013		2012
		(in thousands)
Fixed price swaps	Gas Sales	$	(1,652)	$	2,450
Costless-collars	Gas Sales	$	–	$	(24)

Before Tax Effect of Basis Swaps Not Qualifying for Hedge Accounting

		Gain (Loss) on Derivatives,
		net of settlement
		Recognized in Earnings
	Consolidated Statement of Operations	For the years ended
	Classification of Gain (Loss) on	December 31,
Derivative Instrument	Derivatives, net of settlement	2013		2012
		(in thousands)
Basis swaps	Gain (Loss) on Derivatives	$	7,450	$	766
Fixed price call options	Gain (Loss) on Derivatives		(26,259)		(4,128)
Fixed price swaps	Gain (Loss) on Derivatives		37,197		–
Fair value swaps	Gain (Loss) on Derivatives		–		1,208
Interest rate swaps	Gain (Loss) on Derivatives		2,992		–
		Gain (Loss)
		on Derivatives, Settled (1)
		Recognized in Earnings
	Consolidated Statement of Operations	For the years ended
	Classification of Gain (Loss)	December 31,
Derivative Instrument	on Derivatives, Settled (1)	2013		2012
		(in thousands)
Basis swaps	Gain (Loss) on Derivatives	$	4,772	$	2,162
Fair value swaps	Gain (Loss) on Derivatives		–		(14,958)
Interest rate swaps	Gain (Loss) on Derivatives		(11)		–