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Agreements and Transactions with Related Parties - 2019 Activity (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 30, 2025 | Sep. 30, 2025 | Feb. 28, 2025 | Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2022
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Interest income |  |  |  | $ 235,047 | $ 240,693 |  |  |
Related Party |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Amount invested |  |  |  |  |  |  |  | $ 4,200
Other Related Party Transactions | Bridge loan, six multifamily properties |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
UPB converted to a mezzanine loan |  |  |  |  |  |  | $ 2,000 |
Other Related Party Transactions | Related Party | Bridge loans |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Principal amount | $ 67,900 |  |  |  |  |  |  |
SOFR floor, percentage | 2.50% |  |  |  |  |  |  |
Interest income |  |  |  | 1,100 |  |  |  |
Other Related Party Transactions | Related Party | Bridge loans | Maturity Date February 2025 |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Variable rate, spread |  |  |  |  |  | 3.50% |  |
Other Related Party Transactions | Related Party | Bridge loans | Maturity Date February 2025 | One multifamily property |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  | $ 35,400 |  |
Other Related Party Transactions | Related Party | Bridge loans | Maturity Date July 2028 |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
SOFR floor, percentage |  | 6.50% |  |  |  |  |  |
Financing receivable, fixed interest rate |  | 0.0100 |  |  |  |  |  |
Other Related Party Transactions | Related Party | Bridge loan, one multifamily property | Maturity Date July 2028 |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Variable rate, spread |  | 1.00% |  |  |  |  |  |
Other Related Party Transactions | Related Party | AMAC III | Mezzanine Loans |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | 7,000 |
Other Related Party Transactions | Related Party | AMAC III | Bridge loans |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 34,000 |
Other Related Party Transactions | Chief executive officer | Mezzanine Loans | Maturity date of January 2024 |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Fixed rate of interest |  |  |  |  |  |  | 10.00% |
Other Related Party Transactions | Chief executive officer | Bridge loan, six multifamily properties | Maturity date of 2019 | Minimum |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  | 10.50% |
Other Related Party Transactions | Chief executive officer | Bridge loan, six multifamily properties | Maturity date of 2019 | Maximum |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  | 12.00% |
Other Related Party Transactions | Chief executive officer | Bridge loan, six multifamily properties | Maturity date of September 2019 |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Interest income |  |  |  | 100 | 100 |  |  |
AMAC III | Other Related Party Transactions | Related Party |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Amount invested |  |  |  |  |  |  | $ 30,000 |
Ownership interest, percentage |  |  |  |  |  |  | 18.00% |
AMAC III | Other Related Party Transactions | Related Party | Bridge loans |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Payoffs and partial paydowns of principal |  |  | $ 2,000 |  |  |  |  |
Interest income |  |  |  | 100 | 700 |  |  |
AMAC Holdings III LLC |  |  |  |  |  |  |  |
Agreements and Transactions with Related Parties |  |  |  |  |  |  |  |
Gain (loss) on investment |  |  |  | $ (500) | (900) |  |  |
Contributions made |  |  |  |  | $ 900 |  |  |

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