Derivatives (Tables)

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

At December 31, 2020, the following non-designated hedges were outstanding:

Term	Commodity	Contracted Volume	Weighted Average  Fixed Price for Swaps	Contracted Market
Jan'21 - Dec'21	Natural gas - basis swap	30,000 MMBtu/day	$(0.215)	NGPL TEXOK
Jan'21 - Oct'21	Natural gas - swap	50,000 MMBtu/day	$2.818	IF - NYMEX (HH)
Nov'21 - Dec'21	Natural gas - swap	45,000 MMBtu/day	$2.900	IF - NYMEX (HH)
Jan'22 - Dec'22	Natural gas - swap	5,000 MMBtu/day	$2.605	IF - NYMEX (HH)
Jan'23 - Dec'23	Natural gas - swap	22,000 MMBtu/day	$2.456	IF - NYMEX (HH)
Jan'22 - Dec'22	Natural gas - collar	35,000 MMBtu/day	$2.50 - $2.68	IF - NYMEX (HH)
Jan'21 - Dec'21	Crude oil - swap	3,000 Bbl/day	$44.65	WTI - NYMEX
Jan'22 - Dec'22	Crude oil - swap	2,300 Bbl/day	$42.25	WTI - NYMEX
Jan'23 - Dec'23	Crude oil - swap	1,300 Bbl/day	$43.60	WTI - NYMEX

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
		Successor		Predecessor
	Balance Sheet Location	2020		2019
		(In thousands)
Commodity derivatives:
Current	Current derivative assets	$	—	$	633
Long-term	Non-current derivative assets	—		—
Total derivative assets		$	—	$	633

		Derivative Liabilities Fair Value
		Successor		Predecessor
	Balance Sheet Location	2020		2019
		(In thousands)
Commodity derivatives:
Current	Current derivative liabilities	$	1,047	$	—
Long-term	Non-current derivative liabilities	4,659		27
Total derivative liabilities		$	5,706	$	27

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

The following is the Effect of derivative instruments on the Consolidated Statements of Operations for the periods indicated:

Derivatives Instruments	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on Derivative
		Successor		Predecessor
		Period September 1, 2020 through December 31, 2020		Period January 1, 2020 through August 31, 2020		For the Year Ended December 31, 2019
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives, included are amounts settled during the period of $(1,133), $(4,244), and $16,196, respectively	$	(985)	$	(10,704)	$	4,225
Total		$	(985)	$	(10,704)	$	4,225