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Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Basic Earnings per Share:    
Net income $ 8,231 $ 10,661
Amount allocated to participating securities (107) (213)
Net income available for basic common shares and basic earnings per share $ 8,124 $ 10,448
Net income available for basic common shares and basic earnings per share, Shares 16,814 18,775
Net income available for basic common shares and basic earnings per share, Per Share Amount $ 0.48 $ 0.56
Diluted Earnings per Share:    
Net income $ 8,231 $ 10,661
Amount allocated to participating securities (107) (213)
Adjustment for dilutive potential common shares $ 0 $ 0
Adjustment for dilutive potential common shares, Shares 4 5
Net income available for diluted common shares and diluted earnings per share $ 8,124 $ 10,448
Net income available for diluted common shares and diluted earnings per share, Shares 16,818 18,780
Net income available for diluted common shares and diluted earnings per share, Per Share Amount $ 0.48 $ 0.56