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Derivatives - Narrative (Details) $ in Thousands | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) derivative | Sep. 30, 2023 USD ($) | Oct. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) derivative | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Number of fixed portfolio layer method fair value swaps | derivative | 5 |  |  |  | 5 |  |
Amortization adjustment | $ 20,700 |  |  |  |  |  |
Fair value, net derivative asset (liability), recurring basis, unobservable input reconciliation, gain (loss), statement of income or comprehensive income flag | Noninterest income |  |  |  |  |  |
Fair value of embedded derivative |  |  |  | $ 648 | $ 648 | $ 648 | $ 787
Realized and unrealized gain (loss) included in earnings | $ 0 | $ (100) |  |  |  |  |
Fair value hedge |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Notional amount | 429,300 |  |  |  |  |  |
Fixed rate mortgages |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Number of fixed portfolio layer method fair value swaps | derivative |  |  |  |  | 4 |  |
Derivative liability | (2,800) |  |  |  |  |  |
Discontinuance fee | 1,700 |  |  |  |  |  |
Fixed rate mortgages | Subsequent Event |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Notional amount |  |  | $ 250,000 |  |  |  |
Fixed rate bonds |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Number of fixed portfolio layer method fair value swaps | derivative |  |  |  |  | 1 |  |
Embedded derivative |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Fair value of embedded derivative | $ 600 |  |  |  | $ 600 |  |

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