Income Per Common Share (Computations Of Basic And Diluted Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	May 02, 2020	May 04, 2019
Numerator:
Net (loss) income	$ (50,582)	$ 25,662
Denominator:
Weighted-average common shares outstanding - basic (shares)	55,723,045	55,899,324
Dilutive impact of options and warrants (shares)	0	369,262
Weighted average common share outstanding - diluted (shares)	55,723,045	56,268,586
Per common share:
Basic income (loss) per common share (dollars per share)	$ (0.91)	$ 0.46
Diluted income (loss) per common share (dollars per share)	$ (0.91)	$ 0.46