Property and Equipment - Schedule of Costs and Related Accumulated Depreciation and Amortization of Major Classes of Property (Detail) - USD ($) $ in Thousands	Mar. 28, 2018	Dec. 27, 2017
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 231,178	$ 209,316
Less: accumulated depreciation and amortization	(128,679)	(106,522)
Property and equipment, net	102,499	102,794
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	12,323	12,323
Buildings and improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	141,608	124,056
Other property and equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	70,741	64,712
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 6,506	$ 8,225