Consolidated Statements of Comprehensive Income (Loss) (Parentheticals) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Change in fair value of derivatives, net of tax		$ 169	$ 272
Pension Plans, Defined Benefit [Member]
Minimum liability adjustment, net of tax	(682)	(2,561)	(434)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Minimum liability adjustment, net of tax	$ 44	$ 12	$ 16