CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Oct. 01, 2013	Jan. 01, 2013
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	90,197,535	87,812,022
Treasury stock, shares	37,842,743	34,414,222
Preferred stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Series A junior participating cumulative preferred stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	150,000	150,000
Preferred stock, shares issued	0	0