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Capitalization (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 15, 2014
Aug. 01, 2014
Jun. 16, 2014
Apr. 11, 2014
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Capitalization              
Preferred stock, shares authorized         1,000,000 1,000,000  
Preferred stock, shares outstanding         0 0  
Dividends              
Dividends declared per common share (in dollars per share)   $ 0.05   $ 0.05 $ 0.00 $ 0.10 $ 0.30
Dividend declared (in dollars)   $ 421   $ 420      
Dividend paid (in dollars per share) $ 0.05   $ 0.05