Net Property and Equipment (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Property, Plant and Equipment
Property and equipment, gross	$ 557,041	$ 526,786
Accumulated depreciation and amortization	(337,584)	(314,689)	(291,303)
Net property and equipment	219,457	212,097	196,661
Land
Property, Plant and Equipment
Property and equipment, gross	32,880	33,000
Buildings and improvements
Property, Plant and Equipment
Property and equipment, gross	86,892	86,763
Leasehold improvements
Property, Plant and Equipment
Property and equipment, gross	110,323	106,487
Equipment and other
Property, Plant and Equipment
Property and equipment, gross	320,480	280,381
Construction in progress
Property, Plant and Equipment
Property and equipment, gross	$ 6,466	$ 20,155