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Accounts Receivable - Components of Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 10, 2016
Jan. 02, 2016
Jan. 03, 2015
Accounts Receivable, Net [Abstract]      
Trade $ 42,597 $ 38,379  
Less: allowance for doubtful accounts 2,394 2,207 $ 3,927
Trade - net 40,203 36,172  
Related parties 1,378 1,250  
Other 5,789 4,170  
Total accounts receivable - net $ 47,370 $ 41,592