Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 30, 2018
Payables And Accruals [Abstract]
Payroll and related expense	$ 20,647	$ 22,348
Occupancy expense	9,143	11,220
Sales tax	8,102	10,198
Other	20,396	23,893
Accrued expenses	$ 58,288	$ 67,659