Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 29, 2019	Dec. 30, 2018
Income Tax Disclosure [Abstract]
Deferred income on sale-leaseback of certain real estate	$ 0	$ 2,505
Deferred Tax Assets, Interest Expense	2,558	0
Lease financing obligations	190	182
Deferred Tax Assets, Operating Lease Liabilities	218,503	0
Postretirement benefit expenses	944	935
Stock-based compensation expense	1,274	1,326
Federal net operating loss carryforwards	30,588	18,955
State net operating loss carryforwards	5,388	3,902
Goodwill and other intangibles, net	548	1,301
Occupancy costs	275	6,091
Tax credit carryforwards	32,378	28,827
Accrued vacation benefits	2,440	2,060
Accrued workers compensation	1,310	1,189
Accumulated other comprehensive income-postretirement benefits	(280)	140
Other	2,367	1,983
Net deferred income tax assets	298,483	69,396
Deferred Tax Liabilities, Operating Right-of-use Assets	(208,804)	0
Inventory and other reserves	(252)	(167)
Property and equipment depreciation	(29,685)	(19,870)
Franchise rights	(66,725)	(21,068)
Deferred Tax Liabilities, Gross	(305,466)	(41,105)
Carrying value of net deferred income tax assets	$ (6,983)	$ 28,291