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Distressed and Other Residential Mortgage Loans, Net - Delinquencies in Portfolio of Loans Held in Securitization Trusts (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) loan | Dec. 31, 2018 USD ($) loan
90 |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of Delinquent Loans | 16 |
Total Unpaid Principal | $ | $ 10,010 |
% of Loan Portfolio | 21.05% |
Residential Mortgage Loans Held In Securitization Trusts And Real Estate Owned Held In Residential Securitization |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of Delinquent Loans | 18 |
Number Of Delinquent Loans, Real estate through foreclosure | 1 |
Unpaid Principal, Real estate owned through foreclosure | $ | $ 360 |
% Of Loan Portfolio, Real estate owned through foreclosure | 0.76% |
Residential Mortgage Loans Held In Securitization Trusts And Real Estate Owned Held In Residential Securitization | 30 - 60 |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of Delinquent Loans | 2 |
Total Unpaid Principal | $ | $ 211 |
% of Loan Portfolio | 0.44% |
Residential mortgage loans held in securitization trust, at fair value |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of Delinquent Loans |  | 19
Residential mortgage loans held in securitization trust, at fair value | 90 |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of Delinquent Loans |  | 19
Total Unpaid Principal | $ |  | $ 10,926
% of Loan Portfolio |  | 18.16%

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