Derivatives (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Non-designated Hedges Outstanding [Table Text Block]

At December 31, 2015, the following non-designated hedges were outstanding:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Jan’16 – Dec’16	Natural gas – swap	35,000 MMBtu/day	$2.625	IF – NYMEX (HH)
Jan’16 – Dec'16	Natural gas – collar	42,000 MMBtu/day	$2.40 - $2.88	IF – NYMEX (HH)
Jan’16 – Dec'16	Natural gas – three-way collar	13,500 MMBtu/day	$2.70 - $2.20 - $3.26	IF – NYMEX (HH)
Jan’17 – Dec'17	Natural gas – three-way collar	15,000 MMBtu/day	$2.50 - $2.00 - $3.32	IF – NYMEX (HH)
Jan’16 – Jun'16	Crude oil – collar	2,150 Bbl/day	$46.36 - $55.62	WTI – NYMEX
Jul’16 – Dec'16	Crude oil – collar	1,450 Bbl/day	$47.50 - $56.40	WTI – NYMEX
Jan’16 – Dec'16	Crude oil – three-way collar	700 Bbl/day	$46.50 - $35.00 - $57.00	WTI – NYMEX
Jul’16 – Dec'16	Crude oil – three-way collar (1)	700 Bbl/day	$47.50 - $35.00 - $63.50	WTI – NYMEX
Jan’17 – Dec'17	Crude oil – three-way collar	750 Bbl/day	$50.00 - $37.50 - $63.90	WTI – NYMEX

Schedule Of Subsequent Non-designated Hedges [Table Text Block]

Subsequent to December 31, 2015, the following non-designated hedges were entered into:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Feb’16 – Dec'16	Natural gas – swap	10,000 MMBtu/day	$2.495	IF – NYMEX (HH)
Jan’17 – Dec'17	Natural gas – swap	10,000 MMBtu/day	$2.795	IF – NYMEX (HH)

Fair Value Of Derivative Instruments And Locations In Balance Sheets [Table Text Block]

The following tables present the fair values and locations of the derivative transactions recorded in our Consolidated Balance Sheets at December 31:

		Derivative Assets Fair Value
	Balance Sheet Location	2015		2014
		(In thousands)
Commodity derivatives:
Current	Current derivative assets	$	10,186	$	31,139
Long-term	Non-current derivative assets	968		—
Total derivative assets		$	11,154	$	31,139

		Derivative Liabilities Fair Value
	Balance Sheet Location	2015		2014
		(In thousands)
Commodity derivatives:
Current	Current derivative liabilities	$	—	$	—
Long-term	Non-current derivative liabilities	285		—
Total derivative liabilities		$	285	$	—

Effect Of Derivative Instruments Recognized In Statement Of Operations, Not Designated As Hedging Instruments [Table Text Block]

Effect of Derivative Instruments on the Consolidated Statements of Operations (derivatives not designated as hedging instruments) for the year ended December 31:

Derivatives Not Designated as Hedging Instruments	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on  Derivative
		2015		2014
		(In thousands)
Commodity derivatives	Gain on derivatives not designated as hedges and hedge ineffectiveness, net (1)	$	26,345	$	30,147
Total		$	26,345	$	30,147

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(1) Amount settled during the period is a gain of $46,615 and a loss of $6,038, respectively.