Revenue (Schedule of Revenue Disaggregation by Product Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Disaggregation Of Revenue [Line Items]
Percentage of net sales	100.00%	100.00%	100.00%
Net sales	$ 1,029,650	$ 1,019,154	$ 1,001,102
Non-Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	43.00%	43.00%	45.00%
Net sales	$ 446,911	$ 436,495	$ 445,496
Non-Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	24.00%	24.00%	26.00%
Net sales	$ 250,320	$ 244,945	$ 256,271
Non-Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	14.00%	14.00%
Net sales	$ 144,628	$ 141,295	$ 137,729
Non-Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	5.00%	5.00%	5.00%
Net sales	$ 51,963	$ 50,255	$ 51,496
Athletics [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	53.00%	53.00%	51.00%
Net sales	$ 533,893	$ 534,925	$ 511,006
Athletics [Member] | Women' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	18.00%	17.00%	16.00%
Net sales	$ 179,411	$ 177,627	$ 165,179
Athletics [Member] | Men' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	21.00%	22.00%	22.00%
Net sales	$ 215,796	$ 219,224	$ 217,969
Athletics [Member] | Children' s [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	14.00%	14.00%	13.00%
Net sales	$ 138,686	$ 138,074	$ 127,858
Accessories [Member]
Disaggregation Of Revenue [Line Items]
Percentage of net sales	4.00%	4.00%	4.00%
Net sales	$ 45,100	$ 43,606	$ 41,259
Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 3,746	$ 4,128	$ 3,341