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Accounts Receivable, Net (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Account receivable, net:    
Allowance for doubtful accounts $ (318) $ (401)
Total accounts receivable, net 17,212 14,246
Security Products [Member]
    
Account receivable, net:    
Total accounts receivable, net 8,779 7,637
Furniture Components [Member]
    
Account receivable, net:    
Total accounts receivable, net 7,715 6,208
Marine Components [Member]
    
Account receivable, net:    
Total accounts receivable, net $ 1,036 $ 802