Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Income tax effect on unrealized hedging gains (losses)	$ (2,914)	$ 1,907	$ 0
Income tax effect on reclassification of realized losses to net income (loss)	1,281	(47)	0
Income tax effect on employee benefit plans	(8,964)	(1,019)	(10,963)
Pension & Other Postretirement Benefits
Income tax effect on employee benefit plans	(8,964)	(1,019)	(10,963)
Unrealized Gains (Losses) on Hedges
Income tax effect on unrealized hedging gains (losses)	(2,914)	1,907	0
Income tax effect on reclassification of realized losses to net income (loss)	$ 1,281	$ (47)	$ 0