Revenue (Disaggregation Of Revenues, By Geography) (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 02, 2021	Mar. 31, 2021	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 56,647	$ 129,095	$ 321,497	$ 321,497
U.S. Land [Member]
Disaggregation of Revenue [Line Items]
Total revenues	19,015	36,479		134,678
U.S. Offshore [Member]
Disaggregation of Revenue [Line Items]
Total revenues	15,567	39,825		80,056
International [Member]
Disaggregation of Revenue [Line Items]
Total revenues	22,065	52,791	$ 106,763	106,763
Global [Member]
Disaggregation of Revenue [Line Items]
Total revenues	40,878	90,823
Global [Member] | U.S. Land [Member]
Disaggregation of Revenue [Line Items]
Total revenues	7,472	11,660		41,376
Global [Member] | U.S. Offshore [Member]
Disaggregation of Revenue [Line Items]
Total revenues	11,894	28,010		59,114
Global [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Total revenues	553	1,639		2,467
North America, Segment [Member]
Disaggregation of Revenue [Line Items]
Total revenues	15,769	38,272
North America, Segment [Member] | U.S. Land [Member]
Disaggregation of Revenue [Line Items]
Total revenues	11,543	24,819		93,302
North America, Segment [Member] | U.S. Offshore [Member]
Disaggregation of Revenue [Line Items]
Total revenues	3,673	11,815		20,942
North America, Segment [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 21,512	$ 51,152		104,296
Drilling Products and Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues				103,993
Onshore Completion and Workover Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues				61,218
Production Services [Member]
Disaggregation of Revenue [Line Items]
Total revenues				101,504
Technical Solutions [Member]
Disaggregation of Revenue [Line Items]
Total revenues				$ 54,782