Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Disaggregation Of Revenue [Line Items]
Net sales	$ 274,645	$ 269,181	$ 796,676	$ 794,992
Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	111,285	106,611	339,900	331,344
Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	61,126	59,510	187,834	185,525
Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	35,446	33,946	111,417	107,633
Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	14,713	13,155	40,649	38,186
Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	148,935	149,281	418,315	427,105
Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	46,742	47,409	139,457	143,583
Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	56,112	56,608	166,253	170,453
Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	46,081	45,264	112,605	113,069
Accessories and Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 14,425	$ 13,289	$ 38,461	$ 36,543
Sales Revenue Net [Member] | Geographic Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	40.00%	40.00%	43.00%	42.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	22.00%	22.00%	24.00%	23.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	13.00%	13.00%	14.00%	14.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	5.00%	5.00%	5.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	54.00%	55.00%	53.00%	54.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	17.00%	18.00%	18.00%	18.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	20.00%	20.00%	21.00%	22.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	17.00%	17.00%	14.00%	14.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Accessories and Other [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	6.00%	5.00%	4.00%	4.00%