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Inventories, Net - Inventories, Net (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventory [Line Items]    
Total raw materials $ 3,157 $ 3,565
Total work-in-process 10,021 6,696
Total finished goods 2,697 2,974
Total inventories, net 15,875 13,235
Security Products
   
Inventory [Line Items]    
Total raw materials 2,544 2,565
Total work-in-process 8,610 5,992
Total finished goods 1,905 2,349
Marine Components
   
Inventory [Line Items]    
Total raw materials 613 1,000
Total work-in-process 1,411 704
Total finished goods $ 792 $ 625