Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 02, 2020	May 04, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 147,495	$ 253,810
Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	54,645	108,662
Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	28,921	60,431
Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	18,715	35,863
Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	7,009	12,368
Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	85,036	133,809
Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	32,912	49,687
Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	31,460	53,304
Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,664	30,818
Accessories and Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 7,814	$ 11,339
Sales Revenue Net [Member] | Geographic Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	100.00%	100.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	38.00%	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	20.00%	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	13.00%	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%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	57.00%	53.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	22.00%	20.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	21.00%	21.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	12.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Accessories and Other [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	4.00%