Segment Information - Capital expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Information
Capital expenditures	$ 552,908	$ 381,487	$ 243,689
Operating segments | U.S. Drilling
Segment Information
Capital expenditures	136,311	118,017	53,875
Operating segments | Canada Drilling
Segment Information
Capital expenditures			2,938
Operating segments | International Drilling
Segment Information
Capital expenditures	357,609	222,099	173,078
Operating segments | Drilling Solutions
Segment Information
Capital expenditures	25,721	19,946	9,919
Operating segments | Rig Technologies
Segment Information
Capital expenditures	21,229	15,660	2,790
Other reconciling items
Segment Information
Capital expenditures	$ 12,038	$ 5,765	$ 1,089