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Inventories, Net - Inventories, Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Inventory [Line Items]    
Total raw materials $ 3,262 $ 3,393
Total work-in-process 9,902 10,271
Total finished goods 2,284 3,199
Total inventories, net 15,448 16,863
Security Products    
Inventory [Line Items]    
Total raw materials 2,725 2,805
Total work-in-process 8,443 8,889
Total finished goods 1,460 2,331
Marine Components    
Inventory [Line Items]    
Total raw materials 537 588
Total work-in-process 1,459 1,382
Total finished goods $ 824 $ 868