Derivatives (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

At December 31, 2017, the following non-designated hedges were outstanding:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Jan’18 – Dec’18	Natural gas – swap	20,000 MMBtu/day	$3.013	IF – NYMEX (HH)
Apr'18 – Oct'18	Natural gas – swap	10,000 MMBtu/day	$2.990	IF – NYMEX (HH)
Jan’18 – Mar'18	Natural gas – basis swap	10,000 MMBtu/day	$(0.208)	IF – NYMEX (HH)
Nov’18 – Dec'18	Natural gas – basis swap	10,000 MMBtu/day	$(0.208)	IF – NYMEX (HH)
Jan’18 – Mar'18	Natural gas – three-way collar	60,000 MMBtu/day	$3.29 - $2.63 - $4.07	IF – NYMEX (HH)
Apr’18 – Dec'18	Natural gas – three-way collar	20,000 MMBtu/day	$3.00 - $2.50 - $3.51	IF – NYMEX (HH)
Jan’18 – Dec'18	Crude oil – swap	3,000 Bbl/day	$51.36	WTI – NYMEX
Jan’18 – Mar'18	Crude oil – collar	500 Bbl/day	$55.00 - $59.50	WTI – NYMEX
Jan’18 – Dec'18	Crude oil – three-way collar	2,000 Bbl/day	$47.50 - $37.50 - $56.08	WTI – NYMEX
Apr’18 – Sep'18	Liquids (Propane) – swap	1,000 Bbl/day	$31.16	MONT BELVIEU

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

After December 31, 2017, the following non-designated hedges were entered into:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Apr’18 – Sep'18	Natural gas – swap	10,000 MMBtu/day	$2.925	IF – NYMEX (HH)
Apr’18 – Sep'18	Natural gas – collar	30,000 MMBtu/day	$2.67 - $2.97	IF – NYMEX (HH)
Feb’18 – Dec'18	Natural gas – basis swap	10,000 MMBtu/day	$(0.678)	PEPL
Feb’18 – Dec'18	Natural gas – basis swap	10,000 MMBtu/day	$(0.568)	NGPL MIDCON
Apr’18 – Oct'18	Natural gas – basis swap	10,000 MMBtu/day	$(0.190)	NGPL TEXOK
Jan'19 – Dec'19	Natural gas – basis swap	10,000 MMBtu/day	$(0.728)	PEPL
Jan'19 – Dec'19	Natural gas – basis swap	10,000 MMBtu/day	$(0.625)	NGPL MIDCON
Jan'19 – Dec'19	Natural gas – basis swap	20,000 MMBtu/day	$(0.273)	NGPL TEXOK
Jan'20 – Dec'20	Natural gas – basis swap	20,000 MMBtu/day	$(0.280)	NGPL TEXOK
Apr'18 – Dec'18	Crude oil – swap	1,000 Bbl/day	$60.00	WTI – NYMEX
Apr’18 – Sep'18	Liquids – swap	500 Bbl/day	$34.10	MONT BELVIEU

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	2017		2016
		(In thousands)
Commodity derivatives:
Current	Current derivative assets	$	721	$	—
Long-term	Non-current derivative assets	—		377
Total derivative assets		$	721	$	377

		Derivative Liabilities Fair Value
	Balance Sheet Location	2017		2016
		(In thousands)
Commodity derivatives:
Current	Current derivative liabilities	$	7,763	$	21,564
Long-term	Non-current derivative liabilities	—		415
Total derivative liabilities		$	7,763	$	21,979

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 for the year ended December 31:

Derivatives Instruments	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on  Derivative
		2017		2016
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives (1)	$	14,732	$	(22,813	)
Total		$	14,732	$	(22,813	)

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(1) Amount settled during the period are gains of $173 and $9,658, respectively.