Segment Information - Adjusted operating income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Information
Total segment adjusted operating income (loss)	$ 118,658	$ (220)
Operating segments
Segment Information
Total segment adjusted operating income (loss)	118,658	(220)
Operating segments | U.S. Drilling
Segment Information
Total segment adjusted operating income (loss)	85,869	(5,851)
Operating segments | International Drilling
Segment Information
Total segment adjusted operating income (loss)	1,957	(6,327)
Operating segments | Drilling Solutions
Segment Information
Total segment adjusted operating income (loss)	27,138	14,709
Operating segments | Rig Technologies
Segment Information
Total segment adjusted operating income (loss)	$ 3,694	$ (2,751)