Repurchase of Common Stock (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Repurchase of Common Stock [Abstract]
Amount repurchased under Board-approved share repurchase program	$ 10,011,000	$ 10,009,000	$ 20,022,000	$ 20,018,000
Stock Repurchase Acquired Through Tax Withholding Restricted Stock	1,223,000	1,878,000	1,448,000	2,013,000
Total amount repurchased	11,234,000	11,887,000	21,470,000	22,031,000
Remaining Authorized Amount, Stock Repurchase Program			$ 116,700,000