Supplemental Financial Information (Property and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 297,185	$ 273,857
Accumulated depreciation and amortization	(116,768)	(106,243)
Property and equipment, net	180,417	167,614
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	187,110	169,953
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	102,431	92,695
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,644	$ 11,209