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Stockholders' Equity - Narrative (Details) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2013
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
May. 12, 2015
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Common shares issued during period for share based compensation (shares)           1,568,832      
Proceeds from the exercise of stock options         $ 141,600 $ 3,252,801 $ 70,719    
Stock issued, nonqualified stock options and incentive warrants noncash (shares)           2,635,696      
Shares received in lieu of cash payment (shares)           50,956      
Shares received in lieu of cash payment, average cost of shares (in USD per share)           $ 12.14      
Dividends paid         9,833,642 $ 9,723,833      
Cash dividends paid (per common share) $ 0.10 $ 0.05 $ 0.10 $ 0.10          
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Payments of Ordinary Dividends, Preferred Stock and Preference Stock         674,302 $ 674,302 674,302    
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]                  
Treasury stock retired (shares)           801,889      
Treasury stock retired, value           $ 1,019,840      
Purchases of treasury stock (shares)           186,714      
Purchases of treasury stock         $ 504,124 $ 2,273,857      
Treasury stock acquired, average cost (in USD per share)           $ 12.18      
Series A Cumulative Preferred Stock                  
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Issuance of preferred stock (in shares)               317,319  
Proceeds from issuance of preferred stock, net               $ 6,930,535  
Cumulative Preferred Stock (as a percent)         8.50% 8.50%   8.50%  
Preferred stock, liquidation preference (in dollars per share)         $ 25.00 $ 25.00   $ 25.00  
Preferred Stock, Dividend Rate, Per-Dollar-Amount         $ 0.177083        
Payments of Ordinary Dividends, Preferred Stock and Preference Stock         $ 674,302 $ 674,302 $ 674,302    
Weighted Average | Series A Cumulative Preferred Stock                  
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Share Price               $ 23.80  
Public Offering | Series A Cumulative Preferred Stock                  
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Issuance of preferred stock (in shares)               220,000  
At the Market Offering | Series A Cumulative Preferred Stock                  
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Issuance of preferred stock (in shares)               97,319  
Common Stock                  
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]                  
Purchases of treasury stock (shares)         70,907 186,714      
Stock acquired for payroll tax liabilities from vestings of stock based compensation plan (in shares)         7,535        
Stock acquired for payroll tax liabilities from vestings of stock based compensation plan (in USD per share)         $ 9.16        
2015 Share Repurchase Program | Common Stock                  
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]                  
Amount authorized to be repurchased                 $ 5,000,000
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]                  
Purchases of treasury stock (shares)         63,372        
Treasury stock acquired, average cost (in USD per share)         $ 6.87