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Stockholders' Equity (Details 2) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Jun. 30, 2013
Series A Cumulative Perpetual Preferred Stock      
Preferred stock dividends paid $ 168,575 $ 168,575  
Series A cumulative perpetual preferred stock
      
Series A Cumulative Perpetual Preferred Stock      
Number of shares sold of series A cumulative perpetual preferred stock 317,319    
Preferred stock dividend rate (as a percent) 8.50%   8.50%
Preferred stock, liquidation preference (in dollars per share) $ 25.00   $ 25.00
Amount of sinking fund available to stockholders 0    
Redemption price per share (in dollars per share) $ 25.25    
Dividend payable monthly on preferred stock (in dollars per share) $ 0.177083    
Preferred stock dividends paid $ 168,575 $ 168,575