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Prepaid Expenses and Other Current Assets and Other Current Liabilities - Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 26, 2015
Balance Sheet Related Disclosures [Abstract]    
Prepaid expenses $ 1,021 $ 1,185
Prepaid gift card expenses 387 0
Inventories 226 182
Other current assets 0 385
Total $ 1,634 $ 1,752