Segment Information - Capital expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Information
Capital expenditures	$ 381,487	$ 243,689	$ 189,706
Operating segments | U.S. Drilling
Segment Information
Capital expenditures	118,017	53,875	44,606
Operating segments | Canada Drilling
Segment Information
Capital expenditures		2,938	2,018
Operating segments | International Drilling
Segment Information
Capital expenditures	222,099	173,078	127,888
Operating segments | Drilling Solutions
Segment Information
Capital expenditures	19,946	9,919	12,306
Operating segments | Rig Technologies
Segment Information
Capital expenditures	15,660	2,790	2,637
Other reconciling items
Segment Information
Capital expenditures	$ 5,765	$ 1,089	$ 251