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Securities (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 USD ($) shares | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) item | Jun. 30, 2015 USD ($) shares | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Available-for-sale securities |  |  |  |  |  |
Carrying Value / Estimated Fair Value | $ 823,050 |  |  | $ 823,050 |  | $ 2,499,709
Principal paydowns of loan sold |  |  |  | (551,201,085) | $ (474,807,344) |
Proceeds from sale of securities |  |  |  |  | 33,904,172 |
Reverse of unrealized loss from accumulated other comprehensive loss | 364,552 | $ 29,394 |  | 423,341 | (29,395) |
Gain on sale of securities |  |  |  |  | 518,640 |
Residential mortgage-backed security (RMBS) |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Number of investments acquired with deteriorated credit quality | item |  |  | 2 |  |  |
Aggregate carrying value of investment with deteriorated credit quality |  |  | $ 25,800,000 |  |  |
Proceeds from sale of securities |  |  | 25,900,000 |  |  |
Available-for-sale Securities |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Face Value |  |  |  |  |  | 2,100,000
Amortized Cost |  |  |  |  |  | 2,158,789
Cumulative Unrealized Gain |  |  |  |  |  | 340,920
Carrying Value / Estimated Fair Value |  |  |  |  |  | 2,499,709
Impairment charges | 0 | $ 0 |  | 0 | $ 0 |
Available-for-sale Securities | Realty Finance Corporation |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Carrying Value / Estimated Fair Value | $ 800,000 |  |  | $ 800,000 |  | 500,000
Number of shares of common stock purchased | shares | 2,939,465 |  |  | 2,939,465 |  |
Available-for-sale Securities | Commercial mortgage-backed security (CMBS) |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Face Value |  |  |  |  |  | 2,100,000
Amortized Cost |  |  |  |  |  | 2,100,000
Cumulative Unrealized (Loss) |  |  |  |  |  | (100,000)
Carrying Value / Estimated Fair Value | $ 2,000,000 |  |  | $ 2,000,000 |  | 2,000,000
Proceeds from sale of securities | 2,100,000 |  |  |  |  |
Reverse of unrealized loss from accumulated other comprehensive loss | $ 100,000 |  |  |  |  |
Weighted average yield (as a percent) | 1.19% |  |  | 1.04% |  |
Available-for-sale Securities | Residential mortgage-backed security (RMBS) |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Cumulative Unrealized Gain |  |  | 400,000 |  |  |
Carrying Value / Estimated Fair Value |  |  | 33,400,000 |  |  |
Proceeds from sale of securities |  |  | 33,900,000 |  |  |
Gain on sale of securities |  |  | $ 500,000 |  |  |
Number of securities | item |  |  | 2 |  |  |
Investments financed with a repurchase agreement with a financial institution |  |  | $ 25,300,000 |  |  |
Weighted average yield (as a percent) |  | 1.15% |  |  | 2.05% |
Available-for-sale Securities | Common Stock |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |
Amortized Cost | $ 58,789 |  |  | $ 58,789 |  | 58,789
Cumulative Unrealized Gain | 764,261 |  |  | 764,261 |  | 440,920
Carrying Value / Estimated Fair Value | $ 823,050 |  |  | $ 823,050 |  | $ 499,709

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