Revenue From Contracts With Customers - Disaggregation Of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue From Contracts With Customers
Net revenues	$ 272,547	$ 180,716	$ 585,284	$ 506,072
Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(13,409)	(11,773)	(36,503)	(36,962)
Well Intervention
Revenue From Contracts With Customers
Net revenues	143,925	131,314	356,583	397,387
Well Intervention | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(4,303)	(4,267)	(12,046)	(17,060)
Robotics
Revenue From Contracts With Customers
Net revenues	56,182	42,623	143,383	96,430
Robotics | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(8,971)	(7,506)	(24,322)	(19,902)
Shallow Water Abandonment
Revenue From Contracts With Customers
Net revenues	67,401		67,401
Shallow Water Abandonment | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(135)		(135)
Production Facilities
Revenue From Contracts With Customers
Net revenues	18,448	18,552	54,420	49,217
Short-term
Revenue From Contracts With Customers
Net revenues	205,339	123,140	429,087	279,445
Short-term | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(135)		(770)
Short-term | Well Intervention
Revenue From Contracts With Customers
Net revenues	111,378	92,954	288,772	218,840
Short-term | Robotics
Revenue From Contracts With Customers
Net revenues	26,695	30,186	73,684	60,605
Short-term | Shallow Water Abandonment
Revenue From Contracts With Customers
Net revenues	67,401		67,401
Long-term
Revenue From Contracts With Customers
Net revenues	67,208	57,576	156,197	226,627
Long-term | Intercompany Eliminations
Revenue From Contracts With Customers
Net revenues	(13,274)	(11,773)	(35,733)	(36,962)
Long-term | Well Intervention
Revenue From Contracts With Customers
Net revenues	32,547	38,360	67,811	178,547
Long-term | Robotics
Revenue From Contracts With Customers
Net revenues	29,487	12,437	69,699	35,825
Long-term | Production Facilities
Revenue From Contracts With Customers
Net revenues	$ 18,448	$ 18,552	$ 54,420	$ 49,217