Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 976,765	$ 1,036,551	$ 1,029,650
Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	399,858	459,555	446,911
Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	213,095	255,773	250,320
Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	132,057	149,075	144,628
Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	54,706	54,707	51,963
Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	520,402	525,080	533,893
Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	180,664	175,298	179,411
Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	214,010	210,157	215,796
Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	125,728	139,625	138,686
Accessories [Member]
Disaggregation Of Revenue [Line Items]
Net sales	48,282	48,402	45,100
Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 8,223	$ 3,514	$ 3,746
Sales Revenue Net [Member] | Geographic Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	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	41.00%	44.00%	43.00%
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%	25.00%	24.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	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%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	53.00%	51.00%	53.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	18.00%	17.00%	18.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	22.00%	20.00%	21.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	13.00%	14.00%	14.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Accessories [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	5.00%	4.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	1.00%	0.00%	0.00%