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Derivative Financial Instruments and Hedging Activities - Schedule Of Derivative Instruments (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Asset Derivative |  |  |
Gross derivatives |  | $ 109,514,000 | $ 82,306,000
Offsetting derivative assets |  | 0 | (171,000)
Cash collateral received/posted |  | (109,514,000) | (82,135,000)
Net derivatives included in the consolidated balance sheets | [1] | 0 | 0
Liability Derivative |  |  |
Gross derivatives |  | 27,876,000 | 21,217,000
Offsetting derivative liabilities |  | 0 | (171,000)
Cash collateral received/posted |  | 0 | 0
Net derivatives included in the consolidated balance sheets | [1] | 27,876,000 | 21,046,000
Cash Flow Hedging | Interest Rate Swap |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount |  | 760,000,000 |
Financial Institution Counterparties |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Credit exposure related to interest rate swaps |  | 0 | 0
Financial Institution Counterparties | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [2] | 760,000,000 | 575,000,000
Asset Derivative |  |  |
Gross derivatives |  | 39,409,000 | 39,527,000
Liability Derivative |  |  |
Gross derivatives |  | 0 | 0
Financial Institution Counterparties | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swap |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [2] | 654,870,000 | 742,675,000
Asset Derivative |  |  |
Gross derivatives |  | 42,229,000 | 21,733,000
Liability Derivative |  |  |
Gross derivatives |  | 0 | 171,000
Financial Institution Counterparties | Not Designated as Hedging Instrument | Interest Rate Swap |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [2] | 216,777,000 | 223,124,000
Asset Derivative |  |  |
Gross derivatives |  | 27,876,000 | 21,046,000
Liability Derivative |  |  |
Gross derivatives |  | 0 | 0
Customer Counterparties |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Credit exposure related to interest rate swaps |  | 0 | 0
Customer Counterparties | Not Designated as Hedging Instrument | Interest Rate Swap |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [2] | 216,777,000 | 223,124,000
Asset Derivative |  |  |
Gross derivatives |  | 0 | 0
Liability Derivative |  |  |
Gross derivatives |  | $ 27,876,000 | $ 21,046,000
[1] | Net derivative assets are included in other assets and net derivative liabilities are included in other liabilities on the consolidated balance sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and our credit risk. We had no credit exposure related to interest rate swaps with financial institutions and none related to interest rate swaps with customers at September 30, 2023 or December 31, 2022. The credit risk associated with customer transactions is partially mitigated as these are generally secured by the non-cash collateral securing the underlying transaction being hedged.
[2] | Notional amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the consolidated balance sheets.

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