CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jul. 02, 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	89,659,216	87,812,022
Common stock, shares outstanding	89,659,216	87,812,022
Treasury stock, shares	35,742,652	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