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Other Noncurrent Liabilities - Schedule of Other Noncurrent Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 27, 2017
Dec. 28, 2016
Payables and Accruals [Abstract]    
Deferred rent $ 9,403 $ 8,328
Other 3,369 2,354
Total noncurrent liabilities $ 12,772 $ 10,682