Revenue (Disaggregation Of Revenues, By Type) (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 45,928	$ 648,754	$ 667,249	$ 972,052
Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	18,339	268,695	297,835	430,442
Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	27,589	380,059	369,414	541,610
Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	19,234	305,699	299,383	482,347
Services [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,005	33,629	45,226	69,958
Services [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	17,229	272,070	254,157	412,389
Rentals Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	14,434	208,951	225,363	326,126
Rentals Services [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	14,082	197,050	215,163	310,844
Rentals Services [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	352	11,901	10,200	15,282
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	12,260	134,104	142,503	163,579
Product Sales [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,252	38,016	37,446	49,640
Product Sales [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	$ 10,008	$ 96,088	$ 105,057	$ 113,939