Equity Repurchases of Common Stock (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended		1 Months Ended
	Feb. 19, 2014	Mar. 29, 2015	Mar. 30, 2014	Apr. 30, 2015	Aug. 31, 2014	Jan. 31, 2014
Stock Repurchase Program, Authorized Amount					$ 100,000	$ 275,000
Treasury Stock, Shares, Acquired	29,730	3,342
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions	275,000	36,912
Stock Repurchase Program, Cost Incurred		51	2,261
Subsequent Event [Member]
Treasury Stock, Shares, Acquired				2,313
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions				$ 24,719