Discontinued Operation (Cash Flow Of Discontinued Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Feb. 02, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other (gains) and losses, net		$ (18,013)	$ 534	$ 365	$ (16,866)
Pumpco Member
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain)/loss on sale of assets	$ (43)			0	0
Other (gains) and losses, net	0	$ 750	$ 10,018	7,518	(5,193)
Depreciation, depletion, amortization and accretion	2,141			31,356	0
Proceeds from sales of assets	$ 486			$ 14,894	$ 13,861