Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 24, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 17,061	$ 16,581
Accumulated Amortization	(6,063)	(5,754)
Net	10,998	10,827
Sublease assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,820	1,340
Accumulated Amortization	(103)	(82)
Net	1,717	1,258
Franchise rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,298	14,298
Accumulated Amortization	(5,727)	(5,465)
Net	8,571	8,833
Reacquired franchise rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	943	943
Accumulated Amortization	(233)	(207)
Net	$ 710	$ 736