Industry Segment Information (Industry Segment Information) (Details) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Aug. 31, 2020 USD ($)	Sep. 30, 2021 USD ($)	Aug. 31, 2020 USD ($)	Sep. 30, 2021 USD ($) segment
Segment Reporting Information [Line Items]
Number of reporting segments | segment					3
Revenues:
Revenues	$ 32,846	$ 65,574	$ 163,248	$ 276,957	$ 418,202
Operating costs:
Operating costs	19,515	38,720	99,188	237,546	244,494
Depreciation, depletion, and amortization	7,467	17,919	15,294	115,496	49,169
Impairments	13,237	16,572	0	867,814	0
Total expenses	40,219	73,211	114,482	1,220,856	293,663
Loss on abandonment of assets	0	1,179	0	18,733	0
General and administrative	1,582	5,399	5,126	42,766	18,046
(Gain) loss on disposition of assets	(222)	(1,356)	(4,031)	(89)	(6,213)
Income (loss) from operations	(8,733)	(12,859)	47,671	(1,005,309)	112,706
Gain (loss) on derivatives	3,939	(4,250)	(39,742)	(10,704)	(104,973)
Write-off of debt issuance costs	0	0	0	(2,426)	0
Loss on change in fair value of warrants	0	0	(9,054)	0	(12,628)
Reorganization Items	(1,155)	141,002	(971)	133,975	(3,959)
Interest, net	(826)	(1,959)	(702)	(22,824)	(3,895)
Other	39	1,931	(7)	2,034	(762)
Income (loss) before income taxes	(6,736)	123,865	(2,805)	(905,254)	(13,511)
Operating loss carryforwards			420,300		420,300
2021 Through 2037
Operating costs:
Operating loss carryforwards			225,300		225,300
Intersegment Eliminations
Revenues:
Revenues	(2,496)	(4,205)	(14,134)	(14,536)	(33,648)
Operating costs:
Operating costs	(2,496)	(4,205)	(15,014)	(14,536)	(36,288)
Depreciation, depletion, and amortization	0	0	0	0	0
Impairments	0	0		0	0
Total expenses	(2,496)	(4,205)	(15,014)	(14,536)	(36,288)
Loss on abandonment of assets		0		0
General and administrative	0	0	880	0	2,640
(Gain) loss on disposition of assets	0	0	0	0	0
Income (loss) from operations	0	0	0	0	0
Gain (loss) on derivatives	0	0	0	0	0
Write-off of debt issuance costs				0
Loss on change in fair value of warrants			0		0
Reorganization Items	0	0	0	0	0
Interest, net	0	0	0	0	0
Other	0	0	0	0	0
Income (loss) before income taxes	0	0	0	0	0
Oil and Natural Gas [Member] | Operating Segments [Member]
Revenues:
Revenues	13,644	27,962	66,202	103,443	181,003
Operating costs:
Operating costs	6,892	15,895	22,022	119,664	58,365
Depreciation, depletion, and amortization	4,199	9,975	5,311	68,762	19,442
Impairments	13,237	16,572		393,726	0
Total expenses	24,328	42,442	27,333	582,152	77,807
Loss on abandonment of assets		87		17,641
General and administrative	0	0	0	0	0
(Gain) loss on disposition of assets	(10)	(102)	(14)	(160)	(101)
Income (loss) from operations	(10,674)	(14,465)	38,883	(496,190)	103,297
Gain (loss) on derivatives	0	0	0	0	0
Write-off of debt issuance costs				0
Loss on change in fair value of warrants			0		0
Reorganization Items	0	15,504	0	15,504	0
Interest, net	0	0	0	0	0
Other	29	428	51	458	140
Income (loss) before income taxes	(10,645)	1,467	38,934	(480,228)	103,437
Contract drilling [Member]
Operating costs:
(Gain) loss on disposition of assets	(200)	(1,300)	(3,100)	(1,400)	(5,200)
Contract drilling [Member] | Operating Segments [Member]
Revenues:
Revenues	4,414	7,685	19,158	73,519	52,893
Operating costs:
Operating costs	2,989	5,410	15,357	51,811	41,308
Depreciation, depletion, and amortization	526	853	1,576	15,544	4,721
Impairments	0	0		410,126	0
Total expenses	3,515	6,263	16,933	477,481	46,029
Loss on abandonment of assets		1,092		1,092
General and administrative	0	0	0	0	0
(Gain) loss on disposition of assets	(212)	(1,251)	(3,091)	(1,390)	(5,237)
Income (loss) from operations	1,111	1,581	5,316	(403,664)	12,101
Gain (loss) on derivatives	0	0	0	0	0
Write-off of debt issuance costs				0
Loss on change in fair value of warrants			0		0
Reorganization Items	0	(183,664)	0	(183,664)	0
Interest, net	0	0	0	0	0
Other	1	1,426	(34)	1,449	(17)
Income (loss) before income taxes	1,112	(180,657)	5,282	(585,879)	12,084
Mid-Stream [Member] | Operating Segments [Member]
Revenues:
Revenues	17,284	34,132	92,022	114,531	217,954
Operating costs:
Operating costs	12,130	21,620	76,823	80,607	181,109
Depreciation, depletion, and amortization	2,658	6,750	8,143	29,371	24,238
Impairments	0	0		63,962	0
Total expenses	14,788	28,370	84,966	173,940	205,347
Loss on abandonment of assets		0		0
General and administrative	0	0	0	0	0
(Gain) loss on disposition of assets	0	(3)	0	(18)	75
Income (loss) from operations	2,496	5,765	7,056	(59,391)	12,532
Gain (loss) on derivatives	0	0	0	0	0
Write-off of debt issuance costs				0
Loss on change in fair value of warrants			0		0
Reorganization Items	0	(71,016)	0	(71,016)	0
Interest, net	(137)	(828)	(250)	(1,888)	(666)
Other	8	11	(24)	50	(863)
Income (loss) before income taxes	2,367	(66,068)	6,782	(132,245)	11,003
Corporate and Other | Corporate, Non-Segment
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Depreciation, depletion, and amortization	84	341	264	1,819	768
Impairments	0	0		0	0
Total expenses	84	341	264	1,819	768
Loss on abandonment of assets		0		0
General and administrative	1,582	5,399	4,246	42,766	15,406
(Gain) loss on disposition of assets	0	0	(926)	1,479	(950)
Income (loss) from operations	(1,666)	(5,740)	(3,584)	(46,064)	(15,224)
Gain (loss) on derivatives	3,939	(4,250)	(39,742)	(10,704)	(104,973)
Write-off of debt issuance costs				(2,426)
Loss on change in fair value of warrants			(9,054)		(12,628)
Reorganization Items	(1,155)	380,178	(971)	373,151	(3,959)
Interest, net	(689)	(1,131)	(452)	(20,936)	(3,229)
Other	1	66	0	77	(22)
Income (loss) before income taxes	430	369,123	(53,803)	293,098	(140,035)
Oil and natural gas
Revenues:
Revenues	13,643	27,961	52,880	103,439	149,874
Operating costs:
Operating costs	6,674	15,488	21,210	117,691	55,846
Oil and natural gas | Intersegment Eliminations
Revenues:
Revenues	(1)	(1)	(13,322)	(4)	(31,129)
Operating costs:
Operating costs	(218)	(407)	(812)	(1,973)	(2,519)
Oil and natural gas | Oil and Natural Gas [Member] | Operating Segments [Member]
Revenues:
Revenues	13,644	27,962	66,202	103,443	181,003
Operating costs:
Operating costs	6,892	15,895	22,022	119,664	58,365
Oil and natural gas | Contract drilling [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Oil and natural gas | Mid-Stream [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Oil and natural gas | Corporate and Other | Corporate, Non-Segment
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Contract drilling
Revenues:
Revenues	4,414	7,685	19,158	73,519	52,893
Operating costs:
Operating costs	2,989	5,410	15,357	51,810	41,308
Contract drilling | Intersegment Eliminations
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	(1)	0
Contract drilling | Oil and Natural Gas [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Contract drilling | Contract drilling [Member] | Operating Segments [Member]
Revenues:
Revenues	4,414	7,685	19,158	73,519	52,893
Operating costs:
Operating costs	2,989	5,410	15,357	51,811	41,308
Contract drilling | Mid-Stream [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Contract drilling | Corporate and Other | Corporate, Non-Segment
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Gas gathering and processing
Revenues:
Revenues	14,789	29,928	91,210	99,999	215,435
Operating costs:
Operating costs	9,852	17,822	62,621	68,045	147,340
Gas gathering and processing | Intersegment Eliminations
Revenues:
Revenues	(2,495)	(4,204)	(812)	(14,532)	(2,519)
Operating costs:
Operating costs	(2,278)	(3,798)	(14,202)	(12,562)	(33,769)
Gas gathering and processing | Oil and Natural Gas [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Gas gathering and processing | Contract drilling [Member] | Operating Segments [Member]
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	0	0	0	0	0
Gas gathering and processing | Mid-Stream [Member] | Operating Segments [Member]
Revenues:
Revenues	17,284	34,132	92,022	114,531	217,954
Operating costs:
Operating costs	12,130	21,620	76,823	80,607	181,109
Gas gathering and processing | Corporate and Other | Corporate, Non-Segment
Revenues:
Revenues	0	0	0	0	0
Operating costs:
Operating costs	$ 0	$ 0	$ 0	$ 0	$ 0