Discontinued Operations (Components Of Income (Loss) From Discontinued Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 02, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, depletion, amortization and accretion	$ 8,358	$ 219,859	$ 98,060		$ 115,771
General and administrative expenses	$ 11,052	117,575	128,294		205,773
Other (gains) and losses, net		$ 16,726	$ (29,134)
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Asset Impairment Charges	Asset Impairment Charges	Asset Impairment Charges	Asset Impairment Charges
Income (loss) from operations	$ (4,525)	$ (150,610)	$ 203,414		(133,256)
Other income (expense)	(2,105)	(7,128)	(1,804)		(9,229)
Income (loss) from discontinued operations, net of income tax	(352)	(40,069)	(4,577)		(168,687)
Pumpco [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,719	90,682	0		184,580
Cost of services	10,398	85,191	0		180,408
Depreciation, depletion, amortization and accretion	2,141	31,502	0		31,022
General and administrative expenses	1,119	8,847	8,043		22,035
Other (gains) and losses, net	0	15,807	(2,249)		0
Reduction in value of assets	0	0	0		117,335
Income (loss) from operations	(2,939)	(50,665)	(5,794)		(166,220)
Other income (expense)	2,485	188	0		(2,069)
Loss from discontinued operations before tax	(454)	(50,477)	(5,794)		(168,289)
Income tax benefit (expense)	102	10,408	1,217		(398)
Income (loss) from discontinued operations, net of income tax	$ (352)	$ (40,069)	$ (4,577)		$ (168,687)