Stockholders' Equity (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		6 Months Ended				1 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013 Unrealized Gain (Loss) on Cash Flow Hedge	Jun. 29, 2013 Net Unrealized Losses on Available-For-Sale Securities	Jan. 31, 2013 Maximum	Apr. 30, 2012 Maximum	Oct. 31, 2011 Maximum
Stockholders' Equity
Stock issuances under employee plans, net of shares withheld for taxes (in shares)			0.8
Shares withheld to satisfy employee tax obligation			0.1
Stockholders' Equity
Value of common stock board of directors authorized to repurchase (in USD)							$ 50,000,000	$ 100,000,000	$ 50,000,000
Components of accumulated other comprehensive loss, net of taxes
Balance at beginning of the period			(946,000)		(428,000)	(518,000)
Other comprehensive income (loss) before reclassifications			(41,000)		744,000	(785,000)
Amounts reclassified from accumulated other comprehensive loss			58,000		209,000	(151,000)
Other comprehensive income (loss)	(54,000)	168,000	17,000	819,000	953,000	(936,000)
Balance at end of the period	(929,000)		(929,000)		525,000	(1,454,000)
Repurchases of common stock (in shares)				1.1
Repurchases of common stock				$ 38,800,000