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, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, depletion, amortization and accretion	$ 8,358	$ 219,859		$ 115,771	$ 146,791
General and administrative expenses	11,052	117,575		205,773	244,403
Other expenses	0	16,726	$ 16,700	0	0
(Loss) income from operations	(4,525)	(150,610)		(133,256)	13,300
Other income (expense)	(2,105)	(7,128)		(9,229)	(2,484)
Loss from discontinued operations, net of income tax	(352)	(40,069)		(168,687)	(165,465)
Pumpco [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,719	90,682		184,580	734,768
Cost of services	10,398	85,191		180,408	639,065
Depreciation, depletion, amortization and accretion	2,141	31,502		31,022	124,746
General and administrative expenses	1,119	8,847		22,035	50,953
Other expenses	0	15,807		0	0
Reduction in value of assets	0	0		117,335	84,470
(Loss) income from operations	(2,939)	(50,665)		(166,220)	(164,466)
Other income (expense)	2,485	188		(2,069)	27
Loss from discontinued operations before tax	(454)	(50,477)		(168,289)	(164,439)
Income tax benefit (expense)	102	10,408		(398)	(1,026)
Loss from discontinued operations, net of income tax	$ (352)	$ (40,069)		$ (168,687)	$ (165,465)