Income Taxes - Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 28, 2021	Dec. 29, 2020
Deferred tax assets (liabilities):
Loss carry forwards	$ 37,534	$ 37,852
Deferred franchise revenue	1,128	1,506
Property, equipment and intangible assets	(11,821)	(11,063)
Stock-based compensation	1,676	1,384
Tax credit carry forwards	5,624	4,326
Inventory smallwares	(1,646)	(1,740)
Other accrued expenses	1,154	1,861
Operating lease assets	(51,136)	(53,748)
Operating lease liabilities	61,844	63,799
Other	1,138	1,103
Total deferred tax assets	45,495	45,280
Valuation allowance	(45,764)	(45,520)
Net deferred tax liabilities	$ (269)	$ (240)