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Derivative Financial Instruments and Hedging Activities - Narrative (Details) | 3 Months Ended | 6 Months Ended |
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Sep. 30, 2024 contracts | Jun. 30, 2023 contracts | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Derivative [Line Items] |  |  |  |  |
Cash collateral received from counterparties under master netting agreements |  |  | $ 16,990,000 |  | $ 49,874,000
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost |  |  | 249,300,000 |  | 265,800,000
Gain (Loss) on Hedging Activity |  |  | 1,200,000 | $ 4,000,000.0 |
Securities AFS |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost |  |  | 390,800,000 |  | 558,500,000
Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease) |  |  | 662,000 |  | $ 1,100,000
Derivatives designated as hedging instruments |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest Rate Swap Contacts Terminated, Number | contracts | 3 | 1 |  |  |
Interest Rate Swap | Cash Flow Hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  |  | 810,000,000.0 |  |
Cash Flow Hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months |  |  | $ 4,300,000 |  |

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