Business Segment Information - Total Assets By Reportable Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Business Segment Information
Total assets	$ 2,596,937	$ 2,556,036
Corporate and Other
Business Segment Information
Total assets	161,825	210,674
Well Intervention | Reportable Segments
Business Segment Information
Total assets	1,907,375	1,790,971
Robotics | Reportable Segments
Business Segment Information
Total assets	228,763	177,801
Shallow Water Abandonment | Reportable Segments
Business Segment Information
Total assets	183,924	256,356
Production Facilities | Reportable Segments
Business Segment Information
Total assets	$ 115,050	$ 120,234