Stock Repurchase Program - Narrative (Details) - USD ($)				6 Months Ended		33 Months Ended
	May. 25, 2015	Nov. 20, 2014	Aug. 21, 2013	Jul. 26, 2015	Jul. 27, 2014	Jul. 26, 2015	May. 26, 2015	Nov. 30, 2014	Nov. 18, 2014	Nov. 30, 2011
Equity, Class of Treasury Stock [Line Items]
Share repurchase program, authorized amount			$ 100,000,000							$ 50,000,000
Share repurchase program, additional amount authorized	$ 70,000,000	$ 28,400,000	$ 50,000,000
Stock repurchase program, remaining authorized repurchase amount				$ 70,200,000		$ 70,200,000	$ 100,000,000	$ 50,000,000	$ 21,600,000
Value of stock repurchased						$ 128,200,000
Payments for repurchase of common stock				$ 49,847,000	$ 20,000,000
Two Thousand Eleven Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares acquired				2,190,160	761,294
Payments for repurchase of common stock				$ 49,847,000	$ 20,000,000