Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Disaggregation Of Revenue [Line Items]
Net sales	$ 1,036,551	$ 1,029,650	$ 1,019,154
Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	459,555	446,911	436,495
Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	255,773	250,320	244,945
Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	149,075	144,628	141,295
Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	54,707	51,963	50,255
Athletics [Member]
Disaggregation Of Revenue [Line Items]
Net sales	525,080	533,893	534,925
Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	175,298	179,411	177,627
Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	210,157	215,796	219,224
Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Net sales	139,625	138,686	138,074
Accessories [Member]
Disaggregation Of Revenue [Line Items]
Net sales	48,402	45,100	43,606
Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 3,514	$ 3,746	$ 4,128
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	44.00%	43.00%	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	25.00%	24.00%	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	51.00%	53.00%	53.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	17.00%	18.00%	17.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	20.00%	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	14.00%	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%	4.00%	4.00%
Sales Revenue Net [Member] | Geographic Concentration Risk [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	0.00%	0.00%	0.00%