Revenue Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 1,869,275	$ 1,827,889	$ 2,048,124
Subsea Robotics
Disaggregation of Revenue [Line Items]
Revenues	538,515	493,332	583,652
Manufactured Products
Disaggregation of Revenue [Line Items]
Revenues	344,251	477,419	498,350
Offshore Projects Group
Disaggregation of Revenue [Line Items]
Revenues	378,121	289,127	380,966
Integrity Management & Digital Solutions
Disaggregation of Revenue [Line Items]
Revenues	241,393	226,938	266,086
Aerospace and Defense Technologies
Disaggregation of Revenue [Line Items]
Revenues	366,995	341,073	319,070
energy service and product
Disaggregation of Revenue [Line Items]
Revenues	$ 1,502,280	$ 1,486,816	$ 1,729,054