Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 23, 2018	Dec. 31, 2017	Sep. 24, 2017
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (2,345)	$ (1,827)	$ (1,623)
Total other intangible assets, gross carrying amount	39,476	39,891	40,155
Total other intangibe assets, net carrying value	37,131	38,064	38,532
License / Franchise Agreements [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Carrying Amount	3,351	3,360	3,361
Accumulated Amortization	(2,345)	(1,827)	(1,623)
Net Carrying Value	1,006	1,533	1,738
Trade Names [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Carrying Amount/Value	$ 36,125	$ 36,531	$ 36,794