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Equity Method Investments (Detail) - USD ($)
$ in Thousands
3 Months Ended
Dec. 23, 2016
Mar. 31, 2017
Mar. 31, 2016
Schedule of Equity Method Investments [Line Items]      
Distribution received from equity method investee   $ 0 $ 3,300
DMI [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity method ownership percentage (percent) 50.00%    
Foreign currency translation adjustment, before tax     81
Liquidation proceeds $ 351    
ICP [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity method ownership percentage (percent)   30.00%  
Related party sales to MGPI   $ 8,657 6,241
Depreciation and amortization   858 $ 735
Distribution received from equity method investee   $ 3,300