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Commitments and Contingencies - Summary of Company's Purchases from Manufacturing Cooperatives (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Loss Contingencies [Line Items]    
Total purchases from manufacturing cooperatives $ 56,970 $ 50,190
SAC [Member]    
Loss Contingencies [Line Items]    
Total purchases from manufacturing cooperatives 33,634 33,222
Southeastern [Member]    
Loss Contingencies [Line Items]    
Total purchases from manufacturing cooperatives $ 23,336 $ 16,968