Segment Information - Adjusted operating income (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Information
Total segment adjusted operating income (loss)	$ 433,707	$ 194,401	$ (80,787)
Operating segments
Segment Information
Total segment adjusted operating income (loss)	433,707	194,401	(80,787)
Operating segments | U.S. Drilling
Segment Information
Total segment adjusted operating income (loss)	262,353	108,506	(76,492)
Operating segments | Canada Drilling
Segment Information
Total segment adjusted operating income (loss)			2,893
Operating segments | International Drilling
Segment Information
Total segment adjusted operating income (loss)	40,868	(879)	(40,117)
Operating segments | Drilling Solutions
Segment Information
Total segment adjusted operating income (loss)	110,957	77,868	32,771
Operating segments | Rig Technologies
Segment Information
Total segment adjusted operating income (loss)	$ 19,529	$ 8,906	$ 158