Discontinued Operations (Components Of Income (Loss) From Discontinued Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		8 Months Ended	9 Months Ended
	Feb. 02, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, depletion, amortization and accretion	$ 8,358	$ 20,508	$ 59,208	$ 158,256	$ 77,939
General and administrative expenses	11,052	31,841	33,671	84,417	94,090
Other (gains) and losses, net		(13,397)	(1,097)	(732)	(30,263)
Income (loss) from operations	(4,525)	66,031	(43,981)	(109,308)	149,221
Other income (expense)	(2,105)	(6,838)	(6,224)	(6,499)	(6,362)
Income (loss) from discontinued operations, net of income tax	(352)	17	(5,161)	(33,967)	(188)
Pumpco [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,719	0	16,985	85,351	0
Cost of services	10,398	0	17,543	77,936	0
Depreciation, depletion, amortization and accretion	2,141	0	146	31,502	0
General and administrative expenses	1,119	289	2,379	8,597	5,742
Other (gains) and losses, net	0	(303)	3,815	11,333	(5,496)
Income (loss) from operations	(2,939)	14	(6,898)	(44,017)	(246)
Other income (expense)	2,485	0	238	188	0
Loss from discontinued operations before tax	(454)	14	(6,660)	(43,829)	(246)
Income tax benefit (expense)	102	3	1,499	9,862	58
Income (loss) from discontinued operations, net of income tax	$ (352)	$ 17	$ (5,161)	$ (33,967)	$ (188)