Stock Repurchase Program - Narrative (Details) (USD $)	0 Months Ended		9 Months Ended		21 Months Ended	24 Months Ended	9 Months Ended		0 Months Ended
	Aug. 21, 2013	Nov. 30, 2011	Oct. 26, 2014	Oct. 27, 2013	Aug. 21, 2013	Oct. 26, 2014	Oct. 26, 2014 Two Thousand Eleven Repurchase Program [Member]	Oct. 27, 2013 Two Thousand Eleven Repurchase Program [Member]	Nov. 20, 2014 Subsequent Event [Member]	Nov. 18, 2014 Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Share repurchase program, authorized amount		$ 50,000,000			$ 100,000,000
Share repurchase program, additional amount authorized	50,000,000								28,400,000
Stock repurchase program, remaining authorized repurchase amount									50,000,000	21,600,000
Value of stock repurchased						78,400,000
Treasury stock, shares acquired							1,578,869	484,698
Payments for repurchase of common stock			$ 40,906,000	$ 15,000,000			$ 40,900,000	$ 15,000,000