Business Segment Information - Intercompany Segment Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Business Segment Information
Net revenues	$ (308,817)	$ (162,612)	$ (558,901)	$ (312,737)
Intercompany Eliminations
Business Segment Information
Net revenues	14,888	11,207	26,750	23,094
Intercompany Eliminations | Well Intervention
Business Segment Information
Net revenues	6,873	3,893	11,342	7,743
Intercompany Eliminations | Robotics
Business Segment Information
Net revenues	7,989	$ 7,314	15,382	$ 15,351
Intercompany Eliminations | Shallow Water Abandonment
Business Segment Information
Net revenues	$ 26		$ 26