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Inventories, Net - Inventories, Net (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Inventory [Line Items]    
Total raw materials $ 6,548 $ 6,245
Total work-in-process 22,024 19,983
Total finished goods 5,193 5,062
Total inventories, net 33,765 31,290
Security Products    
Inventory [Line Items]    
Total raw materials 4,548 4,172
Total work-in-process 16,032 14,193
Total finished goods 3,332 3,163
Marine Components    
Inventory [Line Items]    
Total raw materials 2,000 2,073
Total work-in-process 5,992 5,790
Total finished goods $ 1,861 $ 1,899