CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2011	Jan. 01, 2011
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, issued
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	23,093,338	22,691,821
Treasury stock, shares	4,437,428	4,233,810