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Summary of Significant Accounting Policies (Schedule of Earnings per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Jan. 28, 2017
Oct. 29, 2016
Jul. 30, 2016
Apr. 30, 2016
Jan. 30, 2016
Oct. 31, 2015
Aug. 01, 2015
May 02, 2015
Jan. 28, 2017
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Basic Earnings per Share:                        
Net income $ (920) $ 9,672 $ 4,104 $ 10,661 $ 4,168 $ 9,386 $ 4,817 $ 10,396 $ 23,517 $ 23,517 $ 28,767 $ 25,527
Amount allocated to participating securities                 (487)   (566) (461)
Net income available for basic common shares and basic earnings per share                 $ 23,030   $ 28,201 $ 25,066
Net income available for basic common shares and basic earnings per share, Shares                 18,017   19,417 19,777
Net income per share - Basic $ (0.05) [1] $ 0.54 [1] $ 0.22 [1] $ 0.56 [1] $ 0.21 [1] $ 0.47 [1] $ 0.24 [1] $ 0.52 [1] $ 1.28   $ 1.45 $ 1.27
Diluted Earnings per Share:                        
Net income $ (920) $ 9,672 $ 4,104 $ 10,661 $ 4,168 $ 9,386 $ 4,817 $ 10,396 $ 23,517 $ 23,517 $ 28,767 $ 25,527
Amount allocated to participating securities                 (487)   (566) (461)
Adjustment for dilutive potential common shares                 $ 0   $ 0 $ 0
Adjustment for dilutive potential common shares, Shares                 5   10 14
Net income available for diluted common shares and diluted earnings per share                 $ 23,030   $ 28,201 $ 25,066
Net income available for diluted common shares and diluted earnings per share, Shares                 18,022   19,427 19,791
Net income per share - Diluted $ (0.05) [1] $ 0.54 [1] $ 0.22 [1] $ 0.56 [1] $ 0.21 [1] $ 0.47 [1] $ 0.24 [1] $ 0.52 [1] $ 1.28   $ 1.45 $ 1.27
[1] Per share amounts are computed independently for each of the quarters presented. The sum of the quarters may not equal the total year due to the impact of changes in weighted shares outstanding and differing applications of earnings under the two-class method.