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Debt - Schedule of Status of Notes and Securitizations (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Mortgage loans |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | $ 400,596 | $ 628,615
Bond principal balance | $ 268,263 | $ 414,338
Percentage of collateral coverage | 149.00% | 152.00%
Mortgage UPB | $ 1,015,033 |
Bond principal balance | 789,905 |
Mortgage loans | 2019-D |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | 92,815 | $ 99,367
Bond principal balance | $ 62,475 | $ 67,739
Percentage of collateral coverage | 149.00% | 147.00%
Mortgage UPB | $ 193,301 |
Bond principal balance | 156,670 |
Mortgage loans | 2019-F |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | 90,384 | $ 96,870
Bond principal balance | $ 51,110 | $ 57,936
Percentage of collateral coverage | 177.00% | 167.00%
Mortgage UPB | $ 170,876 |
Bond principal balance | 127,673 |
Mortgage loans | 2020-B |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | 96,308 | $ 100,245
Bond principal balance | $ 59,202 | $ 63,574
Percentage of collateral coverage | 163.00% | 158.00%
Mortgage UPB | $ 156,468 |
Bond principal balance | 114,534 |
Mortgage loans | 2021-A |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | 121,089 | $ 127,250
Bond principal balance | $ 95,476 | $ 102,057
Percentage of collateral coverage | 127.00% | 125.00%
Mortgage UPB | $ 206,506 |
Bond principal balance | 175,116 |
Mortgage loans | 2021-B |  |
Debt Instrument [Line Items] |  |
Carrying value of mortgages | 0 | $ 204,883
Bond principal balance | $ 0 | $ 123,032
Percentage of collateral coverage | 0.00% | 167.00%
Mortgage UPB | $ 287,882 |
Bond principal balance | 215,912 |
Secured Debt |  |
Debt Instrument [Line Items] |  |
Deferred issuance costs | $ (1,500) | $ (3,100)

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