Revenue From Contracts With Customers - Disaggregation Of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue From Contracts With Customers
Net revenues	$ 395,670	$ 272,547	$ 954,571	$ 585,284
Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(17,084)	(13,409)	(43,834)	(36,503)
Well Intervention | Reportable Segments
Revenue From Contracts With Customers
Net revenues	225,367	143,925	522,026	356,583
Well Intervention | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(6,832)	(4,303)	(18,174)	(12,046)
Robotics | Reportable Segments
Revenue From Contracts With Customers
Net revenues	75,646	56,182	194,918	143,383
Robotics | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(10,252)	(8,971)	(25,634)	(24,322)
Shallow Water Abandonment | Reportable Segments
Revenue From Contracts With Customers
Net revenues	87,272	67,401	212,959	67,401
Shallow Water Abandonment | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues		(135)	(26)	(135)
Production Facilities | Reportable Segments
Revenue From Contracts With Customers
Net revenues	24,469	18,448	68,502	54,420
Short-term
Revenue From Contracts With Customers
Net revenues	239,775	205,339	589,908	429,087
Short-term | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues		(135)	(26)	(770)
Short-term | Well Intervention | Reportable Segments
Revenue From Contracts With Customers
Net revenues	139,743	111,378	293,131	288,772
Short-term | Robotics | Reportable Segments
Revenue From Contracts With Customers
Net revenues	26,995	26,695	100,269	73,684
Short-term | Shallow Water Abandonment | Reportable Segments
Revenue From Contracts With Customers
Net revenues	73,037	67,401	196,534	67,401
Long-term
Revenue From Contracts With Customers
Net revenues	155,895	67,208	364,663	156,197
Long-term | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(17,084)	(13,274)	(43,808)	(35,733)
Long-term | Well Intervention | Reportable Segments
Revenue From Contracts With Customers
Net revenues	85,624	32,547	228,895	67,811
Long-term | Robotics | Reportable Segments
Revenue From Contracts With Customers
Net revenues	48,651	29,487	94,649	69,699
Long-term | Shallow Water Abandonment | Reportable Segments
Revenue From Contracts With Customers
Net revenues	14,235		16,425
Long-term | Production Facilities | Reportable Segments
Revenue From Contracts With Customers
Net revenues	$ 24,469	$ 18,448	$ 68,502	$ 54,420