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Income (Loss) 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
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Numerator:        
Net income $ 9,847 $ 7,061 $ 16,605 $ 11,339
Denominator:        
Weighted-average common shares outstanding - basic (shares) 54,795,750 54,501,257 54,756,580 54,474,946
Dilutive impact of options and warrants (shares) 282,004 284,835 282,624 276,674
Weighted average common share outstanding - diluted (shares) 55,077,754 54,786,092 55,039,204 54,751,620
Per common share:        
Basic income (loss) per common share (dollars per share) $ 0.18 $ 0.13 $ 0.30 $ 0.21
Diluted income (loss) per common share (dollars per share) $ 0.18 $ 0.13 $ 0.30 $ 0.21