Business and Summary of Significant Accounting Policies (Property & Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 27,802	$ 24,787	$ 20,623
Internal payroll costs capitalized	$ 3,000	2,900	2,600
Interest costs capitalized		$ 400	$ 300
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	20 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	7 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years