Stockholders' Equity - Components of AOCI (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Jan. 31, 2017	Aug. 31, 2015
Number of shares of common stock issued	0.5
Program Amount authorized to repurchase			$ 100,000	$ 100,000
Repurchase of common stock (in shares)	0.0	0.4
Repurchase of common stock		$ 18,500
Components of accumulated other comprehensive income (loss), net of taxes
Balance	$ 826,958
Other comprehensive loss	(1,017)	$ (306)
Balance	878,834
Unrealized Gain on Cash Flow Hedge
Components of accumulated other comprehensive income (loss), net of taxes
Balance	1,175
Amount reclassified from accumulated other comprehensive income (loss)	(1,175)
Other comprehensive loss	(1,175)
Net Unrealized Losses on Available-For-Sale Securities
Components of accumulated other comprehensive income (loss), net of taxes
Balance	(683)
Other comprehensive income (loss) before reclassifications	158
Other comprehensive loss	158
Balance	(525)
Accumulated Other Comprehensive Loss
Components of accumulated other comprehensive income (loss), net of taxes
Balance	492
Other comprehensive income (loss) before reclassifications	158
Amount reclassified from accumulated other comprehensive income (loss)	(1,175)
Other comprehensive loss	(1,017)
Balance	$ (525)