Leases Rent Expense Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Operating Leased Assets [Line Items]
Minimum rent on real property	$ 59,076	$ 53,085	$ 45,371
Contingent rent on real property	5,738	5,011	3,494
Restaurant rent expense	64,814	58,096	48,865
Administrative and equipment rent	65,081	58,372	49,129
Rent expense on operating leases	65,081	58,372	49,129
General and Administrative Expense [Member]
Operating Leased Assets [Line Items]
Administrative and equipment rent	267	276	264
Rent expense on operating leases	$ 267	$ 276	$ 264