Repurchase of Common Stock (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Repurchase of Common Stock [Abstract]
Amount repurchased under Board approved share repurchase program	$ 10,008,000	$ 10,008,000	$ 30,027,000	$ 20,015,000
Amount repurchased in connection with the vesting of employee restricted stock grants	15,000	41,000	2,027,000	4,056,000
Total amount repurchased	10,023,000	10,049,000	32,054,000	24,071,000
Remaining Authorized Amount, Stock Repurchase Program			$ 146,700,000