Segment Information - Adjusted operating income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Information
Total segment adjusted operating income (loss)	$ 105,868	$ 89,780	$ 310,911	$ 327,656
Operating segments
Segment Information
Total segment adjusted operating income (loss)	105,868	89,780	310,911	327,656
Operating segments | U.S. Drilling
Segment Information
Total segment adjusted operating income (loss)	41,694	49,582	137,308	210,859
Operating segments | International Drilling
Segment Information
Total segment adjusted operating income (loss)	32,182	9,862	78,330	22,226
Operating segments | Drilling Solutions
Segment Information
Total segment adjusted operating income (loss)	29,231	25,341	83,443	80,830
Operating segments | Rig Technologies
Segment Information
Total segment adjusted operating income (loss)	$ 2,761	$ 4,995	$ 11,830	$ 13,741