Revenue from Contracts with Customers - Summary of Changes in Contract Assets and Contract Liabilities (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Contract assets
Beginning Balance	$ 1,831
Additions	3,539
Deductions	(2,642)
Ending Balance	2,728
Contract liabilities
Beginning Balance	11,049
Additions	3,335
Deductions	(7,768)
Ending Balance	6,616
Subsea Projects [Member]
Contract assets
Beginning Balance	1,448
Additions	3,462
Deductions	(2,417)
Ending Balance	2,493
Contract liabilities
Additions	1,939
Deductions	(1,549)
Ending Balance	390
Research Services
Contract assets
Beginning Balance	148
Additions	77
Deductions	(225)
Thermal Barrier [Member]
Contract assets
Beginning Balance	235
Ending Balance	235
Energy Industrial [Member]
Contract liabilities
Beginning Balance	1,321
Additions	1,396
Deductions	(1,491)
Ending Balance	1,226
Prepayment Liability [Member]
Contract liabilities
Beginning Balance	9,728
Deductions	(4,728)
Ending Balance	$ 5,000