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Receivables, Net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jun. 25, 2016
Jul. 01, 2017
Jun. 25, 2016
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Customers, trade $ 50,658   $ 50,658   $ 39,749
Other receivables 3,044   3,044   3,963
Gross receivables 53,702   53,702   43,712
Less: allowance for doubtful accounts (90)   (90)   (107)
Receivables, net 53,612   53,612   $ 43,605
Allowance for doubtful accounts [Abstract]          
Bad debt expense (credit) $ (13) $ (68) $ 17 $ (95)