Derivatives (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

At December 31, 2018, the following non-designated hedges were outstanding:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Jan’19 – Mar'19	Natural gas – swap	50,000 MMBtu/day	$3.440	IF – NYMEX (HH)
Apr'19 – Dec'19	Natural gas – swap	40,000 MMBtu/day	$2.900	IF – NYMEX (HH)
Jan’19 – Dec'19	Natural gas – basis swap	20,000 MMBtu/day	$(0.659)	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	30,000 MMBtu/day	$(0.265)	NGPL TEXOK
Jan’20 – Dec'20	Natural gas – basis swap	30,000 MMBtu/day	$(0.275)	NGPL TEXOK
Jan’19 – Dec'19	Natural gas – collar	20,000 MMBtu/day	$2.63 - $3.03	IF – NYMEX (HH)
Jan'19 – Mar'19	Natural gas – three-way collar	30,000 MMBtu/day	$3.17 - $2.92 - $4.32	IF – NYMEX (HH)
Jan’19 – Dec'19	Crude oil – three-way collar	4,000 Bbl/day	$61.25 - $51.25 - $72.93	WTI – NYMEX

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

After December 31, 2018, the following non-designated hedges were entered into:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Apr'19 – Oct'19	Natural gas – swap	20,000 MMBtu/day	$2.900	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	2018		2017
		(In thousands)
Commodity derivatives:
Current	Current derivative assets	$	12,870	$	721
Long-term	Non-current derivative assets	—		—
Total derivative assets		$	12,870	$	721

		Derivative Liabilities Fair Value
	Balance Sheet Location	2018		2017
		(In thousands)
Commodity derivatives:
Current	Current derivative liabilities	$	—	$	7,763
Long-term	Non-current derivative liabilities	293		—
Total derivative liabilities		$	293	$	7,763

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
		2018		2017
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives (1)	$	(3,184)	$	14,732
Total		$	(3,184)	$	14,732

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1.Amounts settled during the periods are a loss of $22,803 and a gain of $173, respectively.