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Stockholders' Equity - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Dec. 31, 2013 | Mar. 31, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2014 | 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 |  |  |  | $ 51,000 | $ 141,600 | $ 3,252,801 |
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 |
Treasury stock retired (shares) |  |  |  |  |  | 801,889 |
Treasury stock retired, value |  |  |  |  |  | $ 1,019,840 |
Purchases of treasury stock (shares) |  |  |  |  |  | 186,714 |
Treasury stock acquired, average cost (in USD per share) |  |  |  |  |  | $ 12.18 |
Purchases of treasury stock |  |  |  | 1,263,402 | 504,124 | $ 2,273,857 |
Cash dividends paid (per common share) |  | $ 0.10 | $ 0.05 |  |  |  |
Dividends paid |  |  |  | 6,565,823 | 9,833,642 | 9,723,833 |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Cash dividends to preferred stockholders |  |  |  | $ 674,302 | $ 674,302 | 674,302 |
Series A Cumulative Preferred Stock |  |  |  |  |  |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  | 317,319 |  |  |
Preferred stock dividend rate (as a percent) |  |  |  | 8.50% | 8.50% |  |
Amount of sinking fund available to stockholders |  |  |  | $ 0 |  |  |
Preferred stock, liquidation preference (in dollars per share) | $ 25.00 |  |  | $ 25.00 | $ 25.00 |  |
Dividend payable monthly on preferred stock (in dollars per share) |  |  |  | $ 0.177083 |  |  |
Cash dividends to preferred stockholders |  |  |  | $ 674,302 | $ 674,302 | $ 674,302 |
Common Stock |  |  |  |  |  |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Purchases of treasury stock (shares) |  |  |  | 218,682 | 70,907 | 186,714 |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Percentage of cash dividends treated as qualified dividend income |  |  |  |  | 14.00% |  |
Percentage of cash dividends treated as return of capital |  |  |  |  | 86.00% |  |
Preferred |  |  |  |  |  |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Percentage of cash dividends treated as qualified dividend income |  |  |  |  | 100.00% |  |
2015 Share Repurchase Program | Common Stock |  |  |  |  |  |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |  |
Purchases of treasury stock (shares) | 265,762 |  |  | 202,390 |  |  |
Treasury stock acquired, average cost (in USD per share) | $ 6.05 |  |  | $ 5.80 |  |  |
Purchases of treasury stock | $ 1,609,008 |  |  | $ 1,173,899 |  |  |
Amount authorized to be repurchased |  |  |  |  |  |  | $ 5,000,000

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