Segment Information - Adjusted operating income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Information
Total segment adjusted operating income (loss)	$ 89,780	$ 60,380	$ 327,656	$ 93,440
Operating segments
Segment Information
Total segment adjusted operating income (loss)	89,780	60,380	327,656	93,440
Operating segments | U.S. Drilling
Segment Information
Total segment adjusted operating income (loss)	49,582	37,776	210,859	40,213
Operating segments | International Drilling
Segment Information
Total segment adjusted operating income (loss)	9,862	(907)	22,226	(2,629)
Operating segments | Drilling Solutions
Segment Information
Total segment adjusted operating income (loss)	25,341	20,099	80,830	53,068
Operating segments | Rig Technologies
Segment Information
Total segment adjusted operating income (loss)	$ 4,995	$ 3,412	$ 13,741	$ 2,788