Revenue from Contracts with Customers - Disaggregation Of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenue From Contracts With Customers
Total Revenue	$ 287,946	$ 278,064
Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue	(23,842)	(8,007)
Well Intervention
Revenue From Contracts With Customers
Total Revenue	195,959	198,374
Well Intervention \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	209,443	198,374
Well Intervention \| Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue	13,484
Robotics
Revenue From Contracts With Customers
Total Revenue	52,015	43,087
Robotics \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	62,373	51,042
Robotics \| Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue	10,358	7,955
Shallow Water Abandonment
Revenue From Contracts With Customers
Total Revenue	21,236	16,766
Shallow Water Abandonment \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	21,236	16,818
Shallow Water Abandonment \| Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue		52
Production Facilities
Revenue From Contracts With Customers
Total Revenue	18,736	19,837
Production Facilities \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	18,736	19,837
Production maximization
Revenue From Contracts With Customers
Total Revenue	79,540	138,629
Production maximization \| Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue	(17,545)	(3,972)
Production maximization \| Well Intervention \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	67,167	96,962
Production maximization \| Robotics \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	9,399	24,726
Production maximization \| Shallow Water Abandonment \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	1,783	1,076
Production maximization \| Production Facilities \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	18,736	19,837
Decommissioning
Revenue From Contracts With Customers
Total Revenue	162,958	116,330
Decommissioning \| Intercompany Eliminations
Revenue From Contracts With Customers
Total Revenue	(6,297)	(4,035)
Decommissioning \| Well Intervention \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	140,870	100,683
Decommissioning \| Robotics \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	8,932	4,016
Decommissioning \| Shallow Water Abandonment \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	19,453	15,666
Renewables
Revenue From Contracts With Customers
Total Revenue	36,757	16,850
Renewables \| Robotics \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	36,757	16,774
Renewables \| Shallow Water Abandonment \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue		76
Other
Revenue From Contracts With Customers
Total Revenue	8,691	6,255
Other \| Well Intervention \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	1,406	729
Other \| Robotics \| Reportable Segments
Revenue From Contracts With Customers
Total Revenue	$ 7,285	$ 5,526