Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Property and equipment [Line Items]
Land	$ 19,126	$ 6,316
Owned buildings	13,625	8,335
Leasehold improvements	215,673	185,109
Equipment	181,283	170,053
Assets subject to capital leases	16,547	16,018
Propert and equipment, gross	446,254	385,831
Less accumulated depreciation and amortization	(226,140)	(206,448)
Property and equipment, net	220,114	179,383
Capital leases, accumulated depreciation	9,553	8,168
Depreciation expense	39,845	36,923	$ 33,594
Property and Equipment [Member]
Property and equipment [Line Items]
Depreciation expense	$ 33,878	$ 31,372	$ 28,364