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Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Goodwill [Line Items]      
Balance Beginning $ 34,200,000 $ 31,400,000 $ 23,742,000
Goodwill acquired during the year   3,100,000  
Sale of disposed operations (10,800,000)    
Changes in currency exchange rates 300,000 (300,000)  
Balance Ending 23,742,000 34,200,000 23,742,000
Security Products
      
Goodwill [Line Items]      
Balance Beginning 23,742,000 23,742,000 23,742,000
Goodwill acquired during the year       
Sale of disposed operations       
Changes in currency exchange rates        
Balance Ending 23,742,000 23,742,000 23,742,000
Furniture Components
      
Goodwill [Line Items]      
Balance Beginning 10,500,000 7,700,000   
Goodwill acquired during the year   3,100,000  
Sale of disposed operations (10,800,000)    
Changes in currency exchange rates 300,000 (300,000)  
Balance Ending    $ 10,500,000