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Fair Value Disclosures (Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | $ 501,336 | $ 408,410
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 501,336 | 408,410
Derivative financial instruments and interest rate swap agreements, asset | 12,387 | 12,821
Derivative financial instruments and interest rate swap agreements, liability | 14,023 | 14,807
US Treasury Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 77,911 | 76,033
US Government-sponsored Enterprises Debt Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 42,566 | 48,093
Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 18,097 | 18,276
Other Debt Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 40,232 | 33,069
Mortgage-backed securities (GSEs) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | $ 322,530 | $ 232,939
Interest Rate Swap [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other Assets | Other Assets
Interest Rate Swap Liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Fair Value, Recurring [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | $ 501,336 | $ 408,410
Total assets at fair value | 513,723 | 421,231
Derivative financial instruments and interest rate swap agreements, liability |  | 14,807
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 501,336 | 408,410
Total assets at fair value | 513,723 | 421,231
Derivative financial instruments and interest rate swap agreements, liability |  | 14,807
Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 77,911 | 76,033
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 77,911 | 76,033
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 42,566 | 48,093
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 42,566 | 48,093
Fair Value, Recurring [Member] | Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 18,097 | 18,276
Fair Value, Recurring [Member] | Municipal securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 18,097 | 18,276
Fair Value, Recurring [Member] | Other Debt Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 40,232 | 33,069
Fair Value, Recurring [Member] | Other Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 40,232 | 33,069
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 322,530 | 232,939
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value, post ASU 2019-04 | 322,530 | 232,939
Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative financial instruments and interest rate swap agreements, asset | 12,387 | 12,821
Fair Value, Recurring [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative financial instruments and interest rate swap agreements, asset | 12,387 | $ 12,821
Fair Value, Recurring [Member] | Interest Rate Swap Liability |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative financial instruments and interest rate swap agreements, liability | 14,023 |
Fair Value, Recurring [Member] | Interest Rate Swap Liability | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative financial instruments and interest rate swap agreements, liability | $ 14,023 |

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