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Segment Information - Balance Sheet (Details) - USD ($) | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Assets: |  |  |  |
Cash and cash equivalents | $ 84,751,397 | $ 138,645,430 | $ 71,613,974 | $ 188,708,687
Restricted cash | 137,138,389 | 29,314,929 |  |
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 | 227,742,986 |  |
Securities held-to-maturity | 18,851,089 |  |  |
Investments in equity affiliates | 31,330,740 | 33,948,853 |  |
Goodwill and other intangible assets | 123,166,816 | 97,489,884 |  |
Other assets | 84,239,811 | 74,544,509 |  |
Total assets | 3,058,177,862 | 2,970,786,246 |  |
Liabilities: |  |  |  |
Debt obligations | 2,008,444,941 | 2,018,118,058 |  |
Allowance for loss-sharing obligations | 30,158,464 | 32,407,554 |  |
Other liabilities | 173,831,248 | 173,222,706 |  |
Total liabilities | 2,212,434,653 | 2,223,748,318 |  |
Other / Eliminations |  |  |  |
Liabilities: |  |  |  |
Debt obligations | 50,000,000 | 50,000,000 |  |
Other liabilities | 1,054,615 | 1,217,864 |  |
Total liabilities | 51,054,615 | 51,217,864 |  |
Structured Business | Operating segments |  |  |  |
Assets: |  |  |  |
Cash and cash equivalents | 28,874,347 | 103,156,034 |  |
Restricted cash | 137,126,053 | 16,230,051 |  |
Loans and investments, net | 1,997,555,985 | 1,695,732,351 |  |
Investments in equity affiliates | 31,330,740 | 33,948,853 |  |
Goodwill and other intangible assets | 12,500,000 |  |  |
Other assets | 71,864,641 | 63,350,947 |  |
Total assets | 2,279,251,766 | 1,912,418,236 |  |
Liabilities: |  |  |  |
Debt obligations | 1,630,457,754 | 1,307,973,936 |  |
Other liabilities | 122,924,302 | 133,788,359 |  |
Total liabilities | 1,753,382,056 | 1,441,762,295 |  |
Agency Business | Operating segments |  |  |  |
Assets: |  |  |  |
Cash and cash equivalents | 55,877,050 | 35,489,396 |  |
Restricted cash | 12,336 | 13,084,878 |  |
Loans held-for-sale, net | 333,267,976 | 673,367,304 |  |
Capitalized mortgage servicing rights, net | 247,875,659 | 227,742,986 |  |
Securities held-to-maturity | 18,851,089 |  |  |
Goodwill and other intangible assets | 110,666,816 | 97,489,884 |  |
Other assets | 12,375,170 | 11,193,562 |  |
Total assets | 778,926,096 | 1,058,368,010 |  |
Liabilities: |  |  |  |
Debt obligations | 327,987,187 | 660,144,122 |  |
Allowance for loss-sharing obligations | 30,158,464 | 32,407,554 |  |
Other liabilities | 49,852,331 | 38,216,483 |  |
Total liabilities | $ 407,997,982 | $ 730,768,159 |  |

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