Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 269,181	$ 287,469	$ 794,992	$ 775,922
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Non-Athletics [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 106,611	$ 104,807	$ 331,344	$ 317,458
Percentage of net sales	40.00%	37.00%	42.00%	42.00%
Non-Athletics [Member] | Women' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 59,510	$ 57,601	$ 185,525	$ 176,722
Percentage of net sales	22.00%	20.00%	23.00%	23.00%
Non-Athletics [Member] | Men' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 33,946	$ 33,828	$ 107,633	$ 104,267
Percentage of net sales	13.00%	12.00%	14.00%	14.00%
Non-Athletics [Member] | Children' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 13,155	$ 13,378	$ 38,186	$ 36,469
Percentage of net sales	5.00%	5.00%	5.00%	5.00%
Athletics [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 149,281	$ 168,632	$ 427,105	$ 423,123
Percentage of net sales	55.00%	58.00%	54.00%	54.00%
Athletics [Member] | Women' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 47,409	$ 52,077	$ 143,583	$ 140,725
Percentage of net sales	18.00%	18.00%	18.00%	18.00%
Athletics [Member] | Men' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 56,608	$ 64,044	$ 170,453	$ 170,811
Percentage of net sales	20.00%	22.00%	22.00%	22.00%
Athletics [Member] | Children' s [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 45,264	$ 52,511	$ 113,069	$ 111,587
Percentage of net sales	17.00%	18.00%	14.00%	14.00%
Accessories [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 12,081	$ 12,853	$ 34,019	$ 32,781
Percentage of net sales	5.00%	5.00%	4.00%	4.00%
Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 1,208	$ 1,177	$ 2,524	$ 2,560
Percentage of net sales	0.00%	0.00%	0.00%	0.00%