Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 30, 2022	Jul. 31, 2021
Disaggregation Of Revenue [Line Items]
Net sales	$ 312,268	$ 332,230	$ 629,795	$ 660,687
Sales Revenue Net | Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Net sales	$ 312,268	$ 332,230	$ 629,795	$ 660,687
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics
Disaggregation Of Revenue [Line Items]
Percentage of net sales	55.00%	48.00%	53.00%	46.00%
Net sales	$ 171,937	$ 157,372	$ 331,054	$ 300,478
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Women's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	30.00%	25.00%	29.00%	24.00%
Net sales	$ 94,013	$ 83,141	$ 182,569	$ 158,672
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Men's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	18.00%	16.00%	17.00%	15.00%
Net sales	$ 55,102	$ 51,678	$ 104,254	$ 95,960
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Children's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	7.00%	7.00%	7.00%	7.00%
Net sales	$ 22,822	$ 22,553	$ 44,231	$ 45,846
Sales Revenue Net | Geographic Concentration Risk | Athletics
Disaggregation Of Revenue [Line Items]
Percentage of net sales	40.00%	47.00%	41.00%	48.00%
Net sales	$ 122,264	$ 156,475	$ 263,052	$ 323,372
Sales Revenue Net | Geographic Concentration Risk | Athletics | Women's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	13.00%	15.00%	14.00%	16.00%
Net sales	$ 40,511	$ 49,648	$ 91,545	$ 108,243
Sales Revenue Net | Geographic Concentration Risk | Athletics | Men's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	17.00%	20.00%	16.00%	20.00%
Net sales	$ 50,776	$ 66,902	$ 103,802	$ 132,626
Sales Revenue Net | Geographic Concentration Risk | Athletics | Children's
Disaggregation Of Revenue [Line Items]
Percentage of net sales	10.00%	12.00%	11.00%	12.00%
Net sales	$ 30,977	$ 39,925	$ 67,705	$ 82,503
Sales Revenue Net | Geographic Concentration Risk | Accessories
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	5.00%	5.00%	5.00%
Net sales	$ 16,664	$ 16,266	$ 32,414	$ 32,894
Sales Revenue Net | Geographic Concentration Risk | Other
Disaggregation Of Revenue [Line Items]
Percentage of net sales	0.00%	0.00%	1.00%	1.00%
Net sales	$ 1,403	$ 2,117	$ 3,275	$ 3,943