CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Apr. 01, 2014	Dec. 31, 2013
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
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 outstanding	91,001,904	90,632,325
Common stock, shares issued	91,001,904	90,632,325
Treasury stock, shares	40,931,893	38,865,951