Income Per Common Share (Computations Of Basic And Diluted Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Aug. 01, 2020	May 02, 2020	Aug. 03, 2019	May 04, 2019	Aug. 01, 2020	Aug. 03, 2019
Numerator:
Net income (loss)	$ 29,581	$ (50,582)	$ 28,831	$ 25,662	$ (21,001)	$ 54,493
Denominator:
Weighted-average common shares outstanding - basic (shares)	55,786,823		55,950,733		55,844,418	55,930,313
Dilutive impact of options and warrants (shares)	180,017		343,376		0	356,319
Weighted average common share outstanding - diluted (shares)	55,966,840		56,294,109		55,844,418	56,286,632
Per common share:
Basic income (loss) per common share (dollars per share)	$ 0.53		$ 0.52		$ (0.38)	$ 0.97
Diluted income (loss) per common share (dollars per share)	$ 0.53		$ 0.51		$ (0.38)	$ 0.97