Discontinued Operations (Assets And Liabilities Of Discontinued Operation) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets	$ 37,528	$ 242,104
Pumpco Member
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, net	7,469	25,448
Prepaid expenses	26	4,881
Other current assets	447	12,076
Total current assets	7,942	42,405
Property, plant and equipment, net	29,328	179,380
Operating lease ROU assets	127	16,958
Other assets	131	3,361
Total assets held for sale	37,528	242,104
Accounts payable	652	2,830
Accrued expenses	4,268	11,153
Operating lease liabilities	72	21,987
Decommissioning liabilities	0	8,311
Other liabilities	615	2,095
Total liabilities	$ 5,607	$ 46,376