Supplemental Financial Information (Property and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Jan. 01, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 273,857	$ 224,987
Accumulated depreciation and amortization	(106,243)	(88,700)
Property and equipment, net	167,614	136,287
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	169,953	139,907
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	92,695	77,202
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 11,209	$ 7,878