Discontinued Operations (Components Of Income (Loss) From Discontinued Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 02, 2021	Mar. 31, 2021	Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, depletion, amortization and accretion	$ 8,358	$ 40,030	$ 34,085
General and administrative expenses	11,052	18,438	32,018
Other (gains) and losses, net		(169)	1,147
Income (loss) from operations	(4,525)	(28,876)	16,745
Other income (expense)	(2,105)	(2,845)	13,947
Income (loss) from discontinued operations, net of income tax	(352)	(9,406)	1,739
Pumpco [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,719	23,252	0
Cost of services	10,398	22,522	0
Depreciation, depletion, amortization and accretion	2,141	12,775	0
General and administrative expenses	1,119	2,595	3,742
Other (gains) and losses, net	0	(2,500)	(5,943)
Income (loss) from operations	(2,939)	(12,140)	2,201
Other income (expense)	2,485	3	0
Loss from discontinued operations before tax	(454)	(12,137)	2,201
Income tax benefit (expense)	102	2,731	(462)
Income (loss) from discontinued operations, net of income tax	$ (352)	$ (9,406)	$ 1,739