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v3.25.4

Investment Securities - Narrative (Details) | 12 Months Ended
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Dec. 31, 2025 USD ($) security preferred_interest shares | Dec. 31, 2024 USD ($) preferred_interest security shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2012 shares
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Cost of third party management | $ 700,000 | $ 800,000 | $ 500,000 |
Number of securities with unrealized losses | security | 14 | 13 |  |
Allowance for credit loss | $ 216,936,000 | $ 431,424,000 |  |
Equity security, fair value | $ 628,000 | $ 5,146,000 |  |
SEREF |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of shares acquired (in shares) | shares |  |  |  | 9,140,000
Number of shares redeemed (in shares) | shares | 3,944,520 | 2,767,038 | 1,892,313 |
Proceeds from shares redeemed | $ 5,100,000 | $ 3,700,000 | $ 2,500,000 |
Remaining held (in shares) | shares | 536,129 |  |  |
Equity security, fair value | $ 600,000 | 5,100,000 |  |
Ownership percentage | 2.30% |  |  |
VIE eliminations |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Fair value of investment securities before consolidation of VIEs eliminated against VIE liabilities | $ 32,500,000 |  |  |
Fair value option |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Fair value of mortgage backed securities | 1,700,000,000 |  |  |
RMBS |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Portion of securities with variable rate | $ 78,600,000 |  |  |
RMBS | Available-for-sale |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Portion of securities with variable rate (as a percent) | 89.00% |  |  |
RMBS | Fair value option |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Portion of securities with variable rate | $ 0 |  |  |
Fair value of investment securities before consolidation of VIEs | 404,700,000 |  |  |
Unpaid principal balance of investment securities before consolidation of VIEs | 326,300,000 |  |  |
CMBS |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Allowance for credit loss | 92,629,000 | 357,012,000 |  |
CMBS | Fair value option |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Portion of securities with variable rate | 0 |  |  |
Fair value of investment securities before consolidation of VIEs | 1,300,000,000 |  |  |
Unpaid principal balance of investment securities before consolidation of VIEs | 2,900,000,000 |  |  |
Infrastructure bonds |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Allowance for credit loss | 41,463,000 | 27,343,000 |  |
Infrastructure bonds | Credit deteriorated | Infrastructure loans: | Choctaw, Mississippi |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Allowance for credit loss to date | 10,000,000.0 | 10,000,000.0 |  |
Allowance for credit loss | 19,200,000 | 19,200,000 |  |
Preferred interests |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Allowance for credit loss | $ 82,844,000 | $ 47,069,000 |  |
Preferred interests | Commercial loans: |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of commercial lending preferred interests | preferred_interest | 7 | 5 |  |
Debt securities, held-to-maturity, nonaccrual | $ 65,000,000.0 | $ 29,300,000 |  |
Unfunded commitments | $ 76,400,000 | $ 57,300,000 |  |

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