Other Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Component of Other Income, Nonoperating [Line Items]
Other income	$ 717	$ 720	$ 444
Business Interruption Insurance Recoveries [Member]
Component of Other Income, Nonoperating [Line Items]
Other income		(100)
Property Insurance Recoveries [Member]
Component of Other Income, Nonoperating [Line Items]
Other income		(300)
Gain (Loss) on Disposition of Property [Member]
Component of Other Income, Nonoperating [Line Items]
Other income		$ (300)