Industry Segment Information (Industry Segment Information) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021		Mar. 31, 2020
Revenues:
Revenues	$ 120,897,000		$ 122,376,000
Operating costs:
Operating costs	71,563,000		83,723,000
Depreciation, depletion, and amortization	17,511,000		61,617,000
Impairments	0		741,924,000
Total expenses	89,074,000		887,264,000
Loss on abandonment of assets	0		17,554,000
General and administrative	6,289,000		11,553,000
(Gain) loss on disposition of assets	(472,000)		390,000
Income (loss) from operations	26,006,000		(794,385,000)
Gain (loss) on derivatives	(22,831,000)		483,000
Interest, net	(2,706,000)		(13,257,000)
Reorganization Items	(1,136,000)		0
Other	76,000		60,000
Income (loss) before income taxes	(591,000)		(807,099,000)
Intersegment Eliminations
Revenues:
Revenues	(9,412,000)		(5,460,000)
Operating costs:
Operating costs	(9,412,000)		(5,460,000)
Depreciation, depletion, and amortization	0		0
Impairments			0
Total expenses	(9,412,000)		(5,460,000)
Loss on abandonment of assets			0
General and administrative	0		0
(Gain) loss on disposition of assets	0		0
Income (loss) from operations	0		0
Gain (loss) on derivatives	0		0
Interest, net	0		0
Reorganization Items	0
Other	0		0
Income (loss) before income taxes	0		0
Oil and Natural Gas [Member]
Revenues:
Revenues	55,025,000		48,524,000
Operating costs:
Operating costs	19,993,000		31,415,000
Depreciation, depletion, and amortization	7,655,000		36,728,000
Impairments			267,836,000
Total expenses	27,648,000		335,979,000
Loss on abandonment of assets			17,554,000
General and administrative	0		0
(Gain) loss on disposition of assets	(19,000)		(13,000)
Income (loss) from operations	27,396,000		(304,996,000)
Gain (loss) on derivatives	0		0
Interest, net	0		0
Reorganization Items	0
Other	57,000		18,000
Income (loss) before income taxes	27,453,000		(304,978,000)
Contract drilling [Member]
Revenues:
Revenues	15,674,000		36,632,000
Operating costs:
Operating costs	11,871,000		25,449,000
Depreciation, depletion, and amortization	1,575,000		11,745,000
Impairments			410,126,000
Total expenses	13,446,000		447,320,000
Loss on abandonment of assets			0
General and administrative	0		0
(Gain) loss on disposition of assets	(529,000)		409,000
Income (loss) from operations	2,757,000		(411,097,000)
Gain (loss) on derivatives	0		0
Interest, net	0		0
Reorganization Items	0
Other	5,000		17,000
Income (loss) before income taxes	2,762,000		(411,080,000)
Mid-Stream [Member]
Revenues:
Revenues	59,610,000		42,680,000
Operating costs:
Operating costs	49,111,000		32,319,000
Depreciation, depletion, and amortization	8,032,000		12,273,000
Impairments			63,962,000
Total expenses	57,143,000		108,554,000
Loss on abandonment of assets			0
General and administrative	0		0
(Gain) loss on disposition of assets	75,000		(6,000)
Income (loss) from operations	2,392,000		(65,868,000)
Gain (loss) on derivatives	0		0
Interest, net	(1,057,000)		(518,000)
Reorganization Items	0
Other	12,000		18,000
Income (loss) before income taxes	1,347,000		(66,368,000)
Corporate and Other [Member]
Revenues:
Revenues	0		0
Operating costs:
Operating costs	0		0
Depreciation, depletion, and amortization	249,000		871,000
Impairments			0
Total expenses	249,000		871,000
Loss on abandonment of assets			0
General and administrative	6,289,000		11,553,000
(Gain) loss on disposition of assets	1,000		0
Income (loss) from operations	(6,539,000)		(12,424,000)
Gain (loss) on derivatives	(22,831,000)		483,000
Interest, net	(1,649,000)		(12,739,000)
Reorganization Items	(1,136,000)
Other	2,000		7,000
Income (loss) before income taxes	(32,153,000)		(24,673,000)
Oil and natural gas
Revenues:
Revenues	55,024,000		48,522,000
Operating costs:
Operating costs	19,149,000		30,663,000
Oil and natural gas | Intersegment Eliminations
Revenues:
Revenues	(1,000)	[1]	(2,000)
Operating costs:
Operating costs	(844,000)		(752,000)
Oil and natural gas | Oil and Natural Gas [Member]
Revenues:
Revenues	55,025,000	[1]	48,524,000
Operating costs:
Operating costs	19,993,000		31,415,000
Oil and natural gas | Contract drilling [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Oil and natural gas | Mid-Stream [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Oil and natural gas | Corporate and Other [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Contract drilling
Revenues:
Revenues	15,674,000		36,632,000
Operating costs:
Operating costs	11,871,000		25,449,000
Contract drilling | Intersegment Eliminations
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Contract drilling | Oil and Natural Gas [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Contract drilling | Contract drilling [Member]
Revenues:
Revenues	15,674,000	[1]	36,632,000
Operating costs:
Operating costs	11,871,000		25,449,000
Contract drilling | Mid-Stream [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Contract drilling | Corporate and Other [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Gas gathering and processing
Revenues:
Revenues	50,199,000		37,222,000
Operating costs:
Operating costs	40,543,000		27,611,000
Gas gathering and processing | Intersegment Eliminations
Revenues:
Revenues	(9,411,000)	[1]	(5,458,000)
Operating costs:
Operating costs	(8,568,000)		(4,708,000)
Gas gathering and processing | Oil and Natural Gas [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Gas gathering and processing | Contract drilling [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	0		0
Gas gathering and processing | Mid-Stream [Member]
Revenues:
Revenues	59,610,000	[1]	42,680,000
Operating costs:
Operating costs	49,111,000		32,319,000
Gas gathering and processing | Corporate and Other [Member]
Revenues:
Revenues	0	[1]	0
Operating costs:
Operating costs	$ 0		$ 0

[1] The revenues for oil and natural gas occur at a point in time. The revenues for contract drilling and gas gathering and processing occur over time.