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Other Assets and Liabilities - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 USD ($) property | Dec. 31, 2018 USD ($) partnership property | Sep. 30, 2019 USD ($) property | Dec. 31, 2018 USD ($) partnership property
Other Assets and Other Liabilities [Line Items] |  |  |  |
Real estate owned (REO) | $ 5,069 | $ 3,943 | $ 5,069 | $ 3,943
REO liquidations |  |  | 5,000 |
Unrealized gain resulting from market valuation adjustments on REO |  |  | 1,000 |
Number of partnerships consolidated | partnership |  | 2 |  | 2
Payable to minority partner | 18,664 | $ 14,331 | 18,664 | $ 14,331
Net gain allocated to Limited Partners | 400 |  | 900 |
Legacy Sequoia |  |  |  |
Other Assets and Other Liabilities [Line Items] |  |  |  |
Real estate owned (REO) | $ 500 |  | 500 |
Amount related to transfers into REO |  |  | $ 200 |
Number of REO properties recorded on balance sheet | property | 3 | 13 | 3 | 13
Freddie Mac SLST |  |  |  |
Other Assets and Other Liabilities [Line Items] |  |  |  |
Real estate owned (REO) | $ 100 |  | $ 100 |
Amount related to transfers into REO |  |  | 100 |
Bridge Loan | Debt Securities |  |  |  |
Other Assets and Other Liabilities [Line Items] |  |  |  |
Real estate owned (REO) | $ 5,000 |  | 5,000 |
Amount related to transfers into REO |  |  | $ 5,000 |
Number of REO properties recorded on balance sheet | property | 1 |  | 1 |

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