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Prepaid Expenses and Other Current Assets and Other Current Liabilities - Other Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 26, 2015
Balance Sheet Related Disclosures [Abstract]    
Accrued payroll and bonuses $ 3,880 $ 2,812
Current portion of deferred revenues 1,547 1,744
Gift card liability 936 108
Taxes payable 895 161
Accrued interest 29 660
Other accrued liabilities 1,954 2,059
Total $ 9,241 $ 7,544