Fresh Start Accounting (Details Textuals) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	9 Months Ended
	Sep. 18, 2020	Sep. 18, 2020	Sep. 18, 2020	Dec. 31, 2021	Dec. 31, 2020
Reorganization Value [Line Items]
Enterprise value	$ 1,280,856	$ 1,280,856	$ 1,280,856
Contractual interest expense on prepetition liabilities not recognized in statement of operations		22,000
DIP credit agreement fees			3,107
Capitalized costs of proved and unproved properties	$ 865,400	865,400	865,400
Expected annual dividend yield for warrants	0.00%
Decrease to deferred taxes	$ 128,600	128,600	128,600
Deferred tax liabilities, net	3,831	3,831	3,831	$ 1,638	$ 1,274
Stockholders' Equity, Period Increase (Decrease)	4,600		(5,331)
Fresh Start Adjustments
Reorganization Value [Line Items]
Deferred tax liabilities, net	(414,120)	(414,120)	(414,120)
Minimum
Reorganization Value [Line Items]
Enterprise value	1,100,000	1,100,000	1,100,000
Maximum
Reorganization Value [Line Items]
Enterprise value	1,500,000	1,500,000	1,500,000
Median
Reorganization Value [Line Items]
Enterprise value	$ 1,300,000	$ 1,300,000	$ 1,300,000
Series A Warrants
Reorganization Value [Line Items]
Exercise price of warrants	$ 32.59	$ 32.59	$ 32.59	$ 32.59
Expected volatility of warrants	49.30%
Risk free interest rate associated with warrants	0.30%
Term of warrants	5 years	5 years	5 years
Series B Warrants
Reorganization Value [Line Items]
Exercise price of warrants	$ 35.41	$ 35.41	$ 35.41	$ 35.41
Expected volatility of warrants	53.60%
Risk free interest rate associated with warrants	0.20%
Term of warrants	3 years	3 years	3 years
Measurement Input, Share Price
Reorganization Value [Line Items]
Implied stock price	$ 22.14	$ 22.14	$ 22.14