Income (Loss) Per Common Share (Computations Of Basic And Diluted Income (Loss) Per Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
May 05, 2018
Apr. 29, 2017
Numerator:    
Net income $ 21,804 $ 8,391
Denominator:    
Weighted-average common shares outstanding - basic (shares) 55,586,037 55,030,682
Dilutive impact of options and warrants (shares) 415,902 274,060
Weighted average common share outstanding - diluted (shares) 56,001,939 55,304,742
Per common share:    
Basic income (loss) per common share (dollars per share) $ 0.39 $ 0.15
Diluted income (loss) per common share (dollars per share) $ 0.39 $ 0.15