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Inventories, Net - Inventories, Net (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Inventory [Line Items]    
Total raw materials $ 6,117 $ 5,042
Total work-in-process 17,661 16,767
Total finished goods 4,304 3,833
Total inventories, net 28,082 25,642
Security Products    
Inventory [Line Items]    
Total raw materials 4,107 3,640
Total work-in-process 12,720 12,721
Total finished goods 2,736 2,271
Marine Components    
Inventory [Line Items]    
Total raw materials 2,010 1,402
Total work-in-process 4,941 4,046
Total finished goods $ 1,568 $ 1,562