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Loans and Investments - Loan Resolution (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 31, 2024 USD ($) | Apr. 30, 2024 USD ($) | Sep. 30, 2023 | Apr. 30, 2023 USD ($) loan | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2023 | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Bridge loans, total UPB |  |  |  |  |  |  |  | $ 629,255 | $ 427,929
Loans and investments |  |  |  |  | $ 11,565,538 | $ 12,615,006 |  | 11,565,538 | $ 12,615,006
Number of loans sold | loan |  |  |  | 4 |  |  |  |  |
Sale of Waco Property |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of real estate | $ 12,300 |  |  |  |  |  |  |  |
Loss on sale of loans | 1,000 |  |  |  |  |  |  |  |
Savannah Property |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of real estate | 7,700 |  |  |  |  |  |  |  |
Gain on sale of loans | 300 |  |  |  |  |  |  |  |
Loss on sale of loans | 500 |  |  |  |  |  |  |  |
Houston Properties |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of real estate |  | $ 101,300 |  |  |  |  |  |  |
Bridge loans |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Bridge loans, total UPB |  | $ 100,300 |  |  |  |  |  |  |
Bridge loans | Waco Property |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Bridge loans, total UPB | $ 12,700 |  |  |  |  |  |  |  |
Financing receivable, basis spread on variable rate | 0.0375 |  |  |  |  |  |  |  |
Financing receivable, floor interest rate | 0.0010 |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss | $ 11,300 |  |  |  |  |  |  |  |
Loan loss reserves related to VIEs | 1,500 |  |  |  |  |  |  |  |
Loan reserve | $ 1,000 |  |  |  |  |  |  |  |
Bridge loans | Sale of Waco Property |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Financing receivable, floor interest rate | 0.0525 |  |  |  |  |  |  |  |
Loans and investments | $ 12,300 |  |  |  |  |  |  |  |
Bridge loans | Savannah Property |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Bridge loans, total UPB | $ 7,300 |  |  |  |  |  |  |  |
Financing receivable, basis spread on variable rate | 0.0375 |  |  |  |  |  |  |  |
Financing receivable, floor interest rate | 0.0010 |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss | $ 6,600 |  |  |  |  |  |  |  |
Loan loss reserves related to VIEs | 800 |  |  |  |  |  |  |  |
Loan reserve | 800 |  |  |  |  |  |  |  |
Loans and investments | $ 7,300 |  |  |  |  |  |  |  |
Financing receivable, fixed interest rate | 0.0400 |  |  |  |  |  |  |  |
Financing receivable, fixed accrual rate | 2.00% |  |  |  |  |  |  |  |
Bridge loans | Houston Properties |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Variable rate, spread |  | 3.00% |  |  |  |  |  |  |
AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Real estate investments, commitment, amount |  |  |  |  | 9,400 |  |  |  |
Independent Ownership Groups |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Real estate investments, commitment, amount |  |  |  |  | 11,800 |  |  |  |
Unconsolidated VIEs |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Loan loss reserves related to VIEs |  |  |  |  | 88,100 |  |  | 88,100 |
Unconsolidated VIEs | Houston Properties |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of real estate, capitalized amount |  | $ 15,000 |  |  | $ 21,200 |  |  | $ 21,200 |
Unconsolidated VIEs | Bridge loans | Houston Properties |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Short-term debt |  | $ 95,300 |  |  |  |  |  |  |
AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Real estate investments, commitment, amount |  |  |  |  |  | $ 24,000 |  |  |
Ownership interest, percentage |  |  |  |  | 49.00% |  |  | 49.00% |
Bridge loans |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |  |  |  |
Bridge loans, total UPB |  |  |  | $ 217,400 |  |  |  |  |
Financing receivable, fixed interest rate |  |  | 0.0300 |  | 0.0700 |  |  |  |
Variable rate, spread |  |  |  |  |  |  | 3.40% |  |

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