CONSOLIDATED SHAREHOLDERS' EQUITY (PARENTHETICAL) (USD $)	3 Months Ended												12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Jan. 02, 2010	Oct. 03, 2009	Jul. 04, 2009	Apr. 04, 2009	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Cash dividends paid per common share	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.215	$ 0.215	$ 0.215	$ 0.215	$ 0.215	$ 0.215	$ 0.215	$ 0.215	$ 0.92	$ 0.86	$ 0.86