Summary of Significant Accounting Policies (Schedule Of Allowance For Sales Returns) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Allowance for Sales Returns [Roll Forward]
Beginning Balance	$ 7,955	$ 8,594	$ 7,431
Additions	761,350	737,727	717,040
Returns	(760,899)	(738,366)	(715,877)
Ending Balance	$ 8,406	$ 7,955	$ 8,594