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Commitments and Contingencies - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) letter_of_credit | Sep. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) letter_of_credit | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) letter_of_credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |
Insurance recoveries | $ 2,100 |  |  |  |  |
Provision (release) for loan credit losses | 35,216 | $ 4,644 |  | $ 41,610 | $ 14,169 |
Loss Contingency Loans |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |
Provision (release) for loan credit losses |  |  | $ (375) | 1,300 |  | $ 4,100
Contingency reserve | 2,800 |  |  | 2,800 |  |
Contingency reserve provision for loan credit losses |  |  |  | 1,200 |  |
Lending-related Commitments |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |
Reserve for lending related commitments | $ 5,000 |  |  | $ 5,000 |  | $ 3,500
Letter of credit | FHLB |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |
Number of instruments | letter_of_credit | 45 |  |  | 45 |  | 37
Maximum borrowing capacity | $ 600,600 |  |  | $ 600,600 |  | $ 709,200

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