Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2016	Dec. 30, 2015	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Depreciation expense	$ 16,100	$ 13,100	$ 11,500
Gross value of assets under capital leases for buildings and improvements	1,600	1,600
Accumulated depreciation of assets under capital leases	1,500	1,500
Capital expenditures	37,400	30,800
Capital expenditures for restaurant remodeling	1,600	6,300
Capital expenditures for new restaurants	29,900	17,400
Other capital maintenance expenditures	5,900	7,100
Long-lived assets, non-cash impairment charges	$ 8,400	$ 181	$ 293