Shareholders' Equity (Common Stock) (Details) - USD ($)	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015	Sep. 27, 2012
Class of Stock [Line Items]
Number of shares of common stock reserved for issuance (shares)				500,000
Discount on common stock fair value for employee purchases (percent)				10.00%
Percentage of shares vested (percent)	33.00%	33.00%	33.00%
Compensation expense	$ 12,000,000	$ 11,200,000	$ 5,900,000
Employee stock purchase plan [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Employee Stock Purchase Plans	5,087	5,018	4,345
Compensation expense	$ 19,000	$ 16,500	$ 16,400
Proceeds from Issuance of Common Stock	$ 200,000	$ 200,000	$ 200,000