Revenue from Contracts with Customers - Summary of Changes in Contract Assets and Contract Liabilities (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Contract assets
Beginning Balance	$ 1,831
Additions	5,312
Deductions	(5,755)
Ending Balance	1,388
Contract liabilities
Beginning Balance	11,049
Additions	4,325
Deductions	(8,018)
Ending Balance	7,356
Subsea Projects [Member]
Contract assets
Beginning Balance	1,448
Additions	5,235
Deductions	(5,295)
Ending Balance	1,388
Contract liabilities
Additions	2,385
Deductions	(1,561)
Ending Balance	824
Research Services
Contract assets
Beginning Balance	148
Additions	77
Deductions	(225)
Thermal Barrier [Member]
Contract assets
Beginning Balance	235
Deductions	(235)
Energy Industrial [Member]
Contract liabilities
Beginning Balance	1,321
Additions	1,940
Deductions	(1,729)
Ending Balance	1,532
Prepayment Liability [Member]
Contract liabilities
Beginning Balance	9,728
Deductions	(4,728)
Ending Balance	$ 5,000