Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 1,330,394	$ 976,765	$ 1,036,551
Sales Revenue Net | Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Percentage of net sales	100.00%	100.00%	100.00%
Net sales	$ 1,330,394	$ 976,765	$ 1,036,551
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics
Disaggregation Of Revenue [Line Items]
Percentage of net sales	44.00%	41.00%	44.00%
Net sales	$ 594,364	$ 399,858	$ 459,555
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Women' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	24.00%	22.00%	25.00%
Net sales	$ 317,144	$ 213,095	$ 255,773
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Men' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	14.00%	14.00%
Net sales	$ 189,294	$ 132,057	$ 149,075
Sales Revenue Net | Geographic Concentration Risk | Non-Athletics | Children' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	6.00%	5.00%	5.00%
Net sales	$ 87,926	$ 54,706	$ 54,707
Sales Revenue Net | Geographic Concentration Risk | Athletics
Disaggregation Of Revenue [Line Items]
Percentage of net sales	50.00%	53.00%	51.00%
Net sales	$ 660,297	$ 520,402	$ 525,080
Sales Revenue Net | Geographic Concentration Risk | Athletics | Women' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	16.00%	18.00%	17.00%
Net sales	$ 212,669	$ 180,664	$ 175,298
Sales Revenue Net | Geographic Concentration Risk | Athletics | Men' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	20.00%	22.00%	20.00%
Net sales	$ 264,417	$ 214,010	$ 210,157
Sales Revenue Net | Geographic Concentration Risk | Athletics | Children' s
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	13.00%	14.00%
Net sales	$ 183,211	$ 125,728	$ 139,625
Sales Revenue Net | Geographic Concentration Risk | Accessories
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	5.00%	5.00%
Net sales	$ 67,168	$ 48,282	$ 48,402
Sales Revenue Net | Geographic Concentration Risk | Other
Disaggregation Of Revenue [Line Items]
Percentage of net sales	1.00%	1.00%	0.00%
Net sales	$ 8,565	$ 8,223	$ 3,514