Revenue (Disaggregation Of Revenues, By Type) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		8 Months Ended		9 Months Ended
	Feb. 02, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 45,928	$ 178,583	$ 135,976	$ 450,318	$ 450,318	$ 521,797	$ 521,797
Rentals [Member]
Disaggregation of Revenue [Line Items]
Total revenues	18,339	76,217			185,902
Well Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	27,589	102,366			264,416
Drilling Products and Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			56,001				227,344
Production Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			46,962				165,828
Technical Solutions [Member]
Disaggregation of Revenue [Line Items]
Total revenues			33,013				128,625
Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	19,234	85,667	67,213		209,133	230,935	230,935
Services [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,005	8,735			24,591
Services [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	17,229	76,932			184,542
Services [Member] | Drilling Products and Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			11,132			38,721
Services [Member] | Production Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			35,221			124,445
Services [Member] | Technical Solutions [Member]
Disaggregation of Revenue [Line Items]
Total revenues			20,860			67,769
Rentals [Member]
Disaggregation of Revenue [Line Items]
Total revenues	14,434	59,420	41,351		143,972	182,436
Rentals [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total revenues	14,082	56,743			133,231
Rentals [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	352	2,677			10,741
Rentals [Member] | Drilling Products and Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			38,784			161,186
Rentals [Member] | Production Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			2,135			12,218
Rentals [Member] | Technical Solutions [Member]
Disaggregation of Revenue [Line Items]
Total revenues			432			9,032
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total revenues	12,260	33,496	27,412		97,213	108,426	$ 108,426
Product Sales [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,252	10,739			28,080
Product Sales [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 10,008	$ 22,757			$ 69,133
Product Sales [Member] | Drilling Products and Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			6,085			27,437
Product Sales [Member] | Production Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues			9,606			29,165
Product Sales [Member] | Technical Solutions [Member]
Disaggregation of Revenue [Line Items]
Total revenues			$ 11,721			$ 51,824