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Loans - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Net deferred costs | $ 46.3 |  | $ 46.3 |  | $ 43.9
Accrued interest receivable | 40.2 |  | 40.2 |  | 38.1
Interest income on nonaccrual loans | $ 0.1 | $ 0.1 | 2.3 | $ 1.1 |
Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Remaining fair value adjustment for loans acquired |  |  | $ (102.2) |  | $ 128.1
Percentage of fair value adjustment for loans acquired | 3.90% |  | 3.90% |  | 4.30%

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