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Agreements and Transactions with Related Parties, Other (Details) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
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Sep. 30, 2017 USD ($) shares | Jul. 14, 2016 USD ($) shares | Aug. 31, 2017 USD ($) | Jul. 31, 2017 USD ($) | May 31, 2017 USD ($) | Jan. 31, 2017 USD ($) | Nov. 30, 2016 USD ($) item | Sep. 30, 2016 USD ($) property | Jan. 31, 2016 USD ($) property | Sep. 30, 2017 USD ($) shares | Sep. 30, 2016 USD ($) property | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Sep. 30, 2017 USD ($) shares | Sep. 30, 2016 USD ($) property | Dec. 31, 2015 USD ($) loan | Dec. 31, 2014 USD ($) item loan | Mar. 31, 2017 USD ($) item | Dec. 31, 2016 USD ($)
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due from related party | $ 12,613,313 |  |  |  |  |  |  |  |  | $ 12,613,313 |  |  |  | $ 12,613,313 |  |  |  |  | $ 1,464,732
Due to related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,038,707
Related party financing | 50,000,000 |  |  |  |  |  |  |  |  | 50,000,000 |  |  |  | 50,000,000 |  |  |  |  | 50,000,000
Income from equity affiliates |  |  |  |  |  |  |  |  |  | 995,312 | $ 4,929,375 |  |  | 1,755,145 | $ 11,193,918 |  |  |  |
Investments in equity affiliates | 31,330,740 |  |  |  |  |  |  |  |  | 31,330,740 |  |  |  | 31,330,740 |  |  |  |  | 33,948,853
ACM Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition purchase price |  | $ 292,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000
Commitment to fund additional investment |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  | 500,000 |  |  |  |  |
Fixed rate of interest (as a percent) |  |  |  |  |  | 11.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Mezzanine loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 100,000 | 100,000 |  |  | 300,000 | 300,000 |  |  |  |
Fixed rate of interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12.50% |  |  |
Amount of loan to related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000 |  |  |
Maturity Date of October 2018, extended from October 2017 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 300,000 | 300,000 |  |  | 800,000 | 800,000 |  |  |  |
Number of mortgage loans secured by property purchased from related party | loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Loan due from related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,700,000 |  |  |
Maturity date of November 2018 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 14,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  | 5.25% |  |  |  |  |  |  |  |  |  |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  | 800,000 |  |  |  |  |
Number of bridge loans originated | item |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
ACM / Our "Former Manager" |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due from related party | $ 12,600,000 |  |  |  |  |  |  |  |  | 12,600,000 |  |  |  | 12,600,000 |  |  |  |  | 1,500,000
Due to related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,000,000
ACM / Our "Former Manager" | Residential Mortgage Banking Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest in equity method investment acquired (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Indirect ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22.5% |  |  |
Acquisition purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,600,000 |  |  |
Income from equity affiliates |  |  |  |  |  |  |  |  |  | $ (1,200,000) | 4,200,000 |  |  | $ (1,800,000) | 8,900,000 |  |  |  |
ACM / Our "Former Manager" | ACM Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares held by related party | shares | 5,349,053 |  |  |  |  |  |  |  |  | 5,349,053 |  |  |  | 5,349,053 |  |  |  |  |
OP units issued as part of acquisition | shares |  | 21,230,769 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting power held by related party |  | 32.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACM / Our "Former Manager" | Non-qualified Residential Mortgages | Residential Mortgage Banking Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional investment made by the company along with a consortium of independent outside investors |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000 |  | 16,100,000 |  |  |
Distributions received |  |  |  |  |  |  |  |  |  |  |  |  |  | 900,000 |  | 14,000,000 |  |  |
ACM / Our "Former Manager" | Mortgage loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 47,000,000 |  |  |
ACM / Our "Former Manager" | Preferred equity interest financing agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party financing | $ 50,000,000 |  |  |  |  |  |  |  |  | $ 50,000,000 |  |  |  | 50,000,000 |  |  |  |  | 50,000,000
Interest expense on related party loan |  |  |  |  |  |  |  |  |  | 1,000,000 | 800,000 |  |  | 2,900,000 | 800,000 |  |  |  |
ACM / Our "Former Manager" | Maturity date of April 2016 | Mortgage loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.80% |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 200,000 | 200,000 |  |  | 700,000 | 700,000 |  |  |  |
Number of mortgage loans secured by property purchased from related party | loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
ACM / Our "Former Manager" | Maturity date of April 2016 | Mortgage loans | First mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,600,000 |  |
ACM / Our "Former Manager" | Maturity date of April 2016 | Mortgage loans | Second mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from repayment in full |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,100,000 |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,100,000 |  |
ACM / Our "Former Manager" | Maturity date of March 2017 | Mortgage loans | First mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,600,000 |  |  |  |  |  |
Consortium of investors including an immediate family member of Mr. Kaufman | Fannie Mae loan on a multifamily property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of maximum loss-sharing obligation unpaid principal balance |  |  |  |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 46,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  | 17.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certain officers, including Mr. Kaufman and our Former Manager | Maturity date of September 2019 | Bridge loan, six multifamily properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  | $ 48,000,000 |  |  | $ 48,000,000 |  |  |  | $ 48,000,000 |  |  |  |
Number of properties owned | property |  |  |  |  |  |  |  | 6 |  |  | 6 |  |  |  | 6 |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  | 4.50% |  |  | 4.50% |  |  |  | 4.50% |  |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 700,000 | $ 100,000 |  |  | 2,100,000 | $ 100,000 |  |  |  |
Proceeds from repayment in full |  |  | $ 6,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certain officers, including Mr. Kaufman and our Former Manager | Maturity date of September 2019 | Bridge loan, six multifamily properties | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  | 7.80% |  |  |  |  |  |  |  |  |  |  |
Certain officers, including Mr. Kaufman and our Former Manager | Maturity date of September 2019 | Bridge loan, six multifamily properties | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  | 9.00% |  |  |  |  |  |  |  |  |  |  |
Certain officers, including Mr. Kaufman and our Former Manager | Maturity date of April 2018 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.50% |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  | 200,000 |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,300,000 |  |  |
Certain Officers | Preferred equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of ownership interest of related party in the entity |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certain Officers | Maturity date of July 2020 | Bridge loan, one multifamily property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  | $ 36,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  | 41.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  | 4.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LIBOR floor (as a percentage) |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 400,000 |  |  |  | 400,000 |  |  |  |  |
Certain Officers | Maturity date of January 2019 | Bridge loan, two multifamily properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 12,700,000 |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  | 4.50% |  |  |  |  |  |  |  |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 300,000 | 300,000 |  |  | 900,000 | 900,000 |  |  |  |
Certain Officers | Maturity date of January 2019 | Bridge loan, one multifamily property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 19,000,000 |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  | 7.50% |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  | 4.50% |  |  |  |  |  |  |  |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | 300,000 | 300,000 |  |  | 800,000 | 700,000 |  |  |  |
Certain Officers | Maturity date of November 2016, extended from April 2016 | Preferred equity investments | Multifamily |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity investment |  |  |  |  |  |  |  |  | $ 5,200,000 |  |  |  |  |  |  |  |  |  |
Fixed rate of interest (as a percent) |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |
Certain Officers | Maturity date of November 2016, extended from April 2016 | Bridge loan, two multifamily properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties owned | property |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Certain Officers | Maturity date of November 2018 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.50% |  |  |
LIBOR floor (as a percentage) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | $ 100,000 | 100,000 |  |  | $ 300,000 | 300,000 |  |  |  |
Loan due from related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,100,000 |  |  |
Chief executive officer | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest allowed under company charter (as a percent) | 5.00% |  |  |  |  |  |  |  |  | 5.00% |  |  |  | 5.00% |  |  |  |  |
Chief executive officer | Maturity date of February 2018 | Preferred equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 23,000,000 | $ 18,000,000 |  |
Interest income recorded |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |
Fixed rate of interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |
Amount of ownership interest of related party in the entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |
Proceeds from repayment in full |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |
Chief executive officer | Maturity date of September 2016, extended from March 2016 | Bridge loan, two multifamily properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties owned | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% |  |
Base spread (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.50% |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | $ 100,000 | 100,000 |  |  | $ 100,000 | 200,000 |  |  |  |
Proceeds from repayment in full |  |  |  |  |  |  |  |  |  |  | 3,300,000 |  |  |  |  |  |  |  |
Investments in equity affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |
Ownership interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |
Number of bridge loans originated | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 |  |
Chief executive officer | Maturity date of August 2017 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.00% |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 30,400,000 |  |
Chief executive officer | Maturity date of August 2020 | Bridge loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base spread (as a percent) |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LIBOR floor (as a percentage) |  |  | 1.23% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  | $ 43,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mr. Ivan Kaufman and his affiliates | Maturity date of August 2017 | Mezzanine loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income recorded |  |  |  |  |  |  |  |  |  | $ 800,000 | 900,000 |  |  | $ 2,400,000 | 2,600,000 |  |  |  |
Fixed rate of interest (as a percent) |  |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |
Amount of mortgage loan secured by property, purchased by related party |  |  |  |  |  |  |  |  | $ 4,600,000 |  |  |  |  |  |  |  |  |  |
Kaufman Entities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of our Former Manager's outstanding membership interest of related party in another related party | 70.00% |  |  |  |  |  |  |  |  | 70.00% |  |  |  | 70.00% |  |  |  |  |
Affiliate of Mr. Ivan Kaufman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract period with the new entity |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years 6 months |  |  |  |  |
Fees as a percentage of gross revenues of the underlying properties |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.75% |  |  |  |  |
Lexford Portfolio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate outstanding balance of related party debt | $ 845,800,000 |  |  |  |  |  |  |  |  | $ 845,800,000 |  |  |  | $ 845,800,000 |  |  |  |  |
Lexford Portfolio | Preferred equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from equity affiliates |  |  |  |  |  |  |  |  |  | 700,000 | 700,000 |  |  | 2,000,000 | 2,100,000 |  |  |  |
Ginkgo | Fannie Mae |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan purchased a multifamily apartment complex which assumed |  |  |  |  |  | $ 8,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of maximum loss-sharing obligation unpaid principal balance |  |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of loan assumption fee |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership after transaction | 3.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lexford Portfolio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from equity affiliates |  |  |  |  |  |  |  |  |  | 700,000 | $ 700,000 |  |  | 2,000,000 | $ 2,100,000 |  |  |  |
Investments in equity affiliates | $ 100 |  |  |  |  |  |  |  |  | $ 100 |  |  |  | $ 100 |  |  |  |  | $ 100
Two portfolios of multifamily properties | Consortium of Investors, including Mr. Kaufman and our Former Manager |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount invested |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |
Ownership interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 26.10% |
Number of portfolios of multifamily properties | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Ginkgo | Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreements and transactions with related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of managing member |  |  |  |  |  | 33.00% |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin. + References No definition available. + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of the contractual principal due at the origination of the mortgage loan (face amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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