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Investments - Additional Information (Detail)
 3 Months Ended
Mar. 31, 2016
USD ($)
MXN / $
Mar. 31, 2015
USD ($)
MXN / $
Dec. 31, 2015
USD ($)
MXN / $
Schedule of Equity Method Investments [Line Items]      
Equity in (losses), net of taxes $ (150,000) $ 288,000  
Deferred tax expense $ 113,000    
Grupo Vasconia S.A.B.      
Schedule of Equity Method Investments [Line Items]      
Percentage of ownership in equity method investment 30.00%    
Exchange rate at period end - MXN to USD | MXN / $ 17.27   17.38
Average daily exchange rate for period - MXN to USD | MXN / $ 18.02 14.94  
Increase (decrease) in equity method investment $ (600,000) $ (1,700,000)  
Equity in (losses), net of taxes (200,000) $ 300,000  
Deferred tax expense 200,000    
Fair value of investment 36,300,000   $ 35,900,000
Carrying value of investment 24,100,000   24,700,000
Grupo Vasconia S.A.B. | Prepaid expenses and other current assets      
Schedule of Equity Method Investments [Line Items]      
Due from related party 55,000    
Grupo Vasconia S.A.B. | Accrued expenses and accounts payable      
Schedule of Equity Method Investments [Line Items]      
Due to related party $ 63,000   28,000
GS Internacional S/A      
Schedule of Equity Method Investments [Line Items]      
Percentage of ownership in equity method investment 40.00%    
Carrying value of investment $ 0   $ 0