Loan Portfolio - Schedule of Carrying Value of Loan Portfolio Based on Internal Risk Ratings (Parenthetical) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Schedule of Loans Receivable Allowance for Credit Losses [Line Items] | ||||||||
| Specific CECL reserves | $ 515,600 | $ 365,400 | ||||||
| Proceeds from sales of loans receivable | 260,325 | [1] | $ 304,004 | |||||
| Recovery of principal charge-offs | $ 733 | $ 0 | 2,682 | $ 0 | ||||
| Loan Originated 2019 | ||||||||
| Schedule of Loans Receivable Allowance for Credit Losses [Line Items] | ||||||||
| Recovery of principal charge-offs | 2,200 | |||||||
| Loan Originated 2018 | ||||||||
| Schedule of Loans Receivable Allowance for Credit Losses [Line Items] | ||||||||
| Recovery of principal charge-offs | $ 500 | |||||||
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