Goodwill and other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 20, 2017	Jan. 03, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 29,811	$ 29,826
Accumulated Amortization	(6,535)	(5,044)
Net	23,276	24,782
Favorable Lease Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,161	14,176
Accumulated Amortization	(3,849)	(2,996)
Net	10,312	11,180
Franchise rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,489	15,489
Accumulated Amortization	(2,659)	(2,038)
Net	12,830	13,451
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	161	161
Accumulated Amortization	(27)	(10)
Net	$ 134	$ 151