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Fair Value, Financial Assets and Liabilities (Details) - USD ($) | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Financial assets: |  |
Loans and investments, net | $ 1,997,555,985 | $ 1,695,732,351
Securities held-to-maturity, net | 18,851,089 |
Financial liabilities: |  |
Credit and repurchase facilities | 562,326,537 | 906,636,790
Collateralized loan obligations | 1,066,230,488 | 728,441,109
Senior unsecured notes | 95,088,379 | 94,521,566
Convertible senior unsecured notes, net | 95,381,121 | 80,660,038
Junior subordinated notes | 139,418,416 | 157,858,555
Level 1 |  |
Financial liabilities: |  |
Senior unsecured notes | 99,817,226 |
Level 2 |  |
Financial assets: |  |
Loans held-for-sale, net | 333,316,099 |
Financial liabilities: |  |
Credit and repurchase facilities | 327,987,187 |
Convertible senior unsecured notes, net | 105,438,000 |
Level 3 |  |
Financial assets: |  |
Loans and investments, net | 2,056,020,469 |
Loans held-for-sale, net | 5,450,662 |
Capitalized mortgage servicing rights, net | 293,807,076 |
Securities held-to-maturity, net | 18,882,997 |
Financial liabilities: |  |
Credit and repurchase facilities | 235,379,290 |
Collateralized loan obligations | 1,080,228,695 |
Junior subordinated notes | 93,833,687 |
Related party financing | 53,270,857 |
Carrying Value |  |
Financial assets: |  |
Loans and investments, net | 1,997,555,985 | 1,695,732,351
Loans held-for-sale, net | 333,267,976 | 673,367,304
Capitalized mortgage servicing rights, net | 247,875,659 |
Securities held-to-maturity, net | 18,851,089 |
Financial liabilities: |  |
Credit and repurchase facilities | 562,326,537 | 906,636,790
Collateralized loan obligations | 1,066,230,488 | 728,441,109
Senior unsecured notes | 95,088,379 | 94,521,566
Convertible senior unsecured notes, net | 95,381,121 | 80,660,038
Junior subordinated notes | 139,418,416 | 157,858,555
Related party financing | 50,000,000 |
Fair Value |  |
Financial assets: |  |
Loans and investments, net | 2,056,020,469 | 1,749,130,232
Loans held-for-sale, net | 338,766,761 | 683,833,449
Capitalized mortgage servicing rights, net | 293,807,076 |
Securities held-to-maturity, net | 18,882,997 |
Financial liabilities: |  |
Credit and repurchase facilities | 563,366,477 | 907,882,886
Collateralized loan obligations | 1,080,228,695 | 728,642,500
Senior unsecured notes | 99,817,226 | 99,034,345
Convertible senior unsecured notes, net | 105,438,000 | 86,586,375
Junior subordinated notes | 93,833,687 | $ 105,649,537
Related party financing | $ 53,270,857 |

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