Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Inventory [Line Items]
Total raw materials	$ 5,573	$ 6,245
Total work-in-process	23,038	19,983
Total finished goods	5,671	5,062
Total inventories, net	34,282	31,290
Security Products
Inventory [Line Items]
Total raw materials	3,464	4,172
Total work-in-process	17,476	14,193
Total finished goods	3,233	3,163
Marine Components
Inventory [Line Items]
Total raw materials	2,109	2,073
Total work-in-process	5,562	5,790
Total finished goods	$ 2,438	$ 1,899