Business Segment Information - Total Assets By Reportable Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total assets	$ 2,307,370	$ 2,326,028
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Total assets	77,296	98,561
Well Intervention | Reportable Segments
Segment Reporting Information [Line Items]
Total assets	2,026,522	2,012,214
Robotics | Reportable Segments
Segment Reporting Information [Line Items]
Total assets	87,575	96,249
Production Facilities | Reportable Segments
Segment Reporting Information [Line Items]
Total assets	$ 115,977	$ 119,004