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Fair Value Measurements and Fair Value of Financial Instruments, Fair Value of Financial Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
AFS securities [Abstract] |  |
AFS securities | $ 1,439,445 | $ 1,430,858
Equity securities | $ 40,087 | 37,591
Minimum [Member] |  |
Fair Value Measurements [Abstract] |  |
Liquidation expense ratio on impaired collateral | 10.00% |
Maximum [Member] |  |
Fair Value Measurements [Abstract] |  |
Liquidation expense ratio on impaired collateral | 50.00% |
U.S. Treasury [Member] |  |
AFS securities [Abstract] |  |
AFS securities | $ 135,310 | 125,024
Federal Agency [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 214,326 | 214,740
State & Municipal [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 86,002 | 86,306
Corporate [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 41,987 | 40,976
Recurring Basis [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 1,439,445 | 1,430,858
Equity securities | 40,087 | 37,591
Derivatives | $ 91,186 | $ 75,142
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other Assets | Other Assets
Total | $ 1,570,718 | $ 1,543,591
Liabilities [Abstract] |  |
Derivatives | $ 115,664 | $ 95,875
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities
Total | $ 115,664 | $ 95,875
Recurring Basis [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 135,310 | 125,024
Equity securities | 39,087 | 36,591
Derivatives | 0 | 0
Total | 174,397 | 161,615
Liabilities [Abstract] |  |
Derivatives | 0 | 0
Total | 0 | 0
Recurring Basis [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 1,304,135 | 1,305,834
Equity securities | 1,000 | 1,000
Derivatives | 91,186 | 75,142
Total | 1,396,321 | 1,381,976
Liabilities [Abstract] |  |
Derivatives | 115,664 | 95,875
Total | 115,664 | 95,875
Recurring Basis [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Equity securities | 0 | 0
Derivatives | 0 | 0
Total | 0 | 0
Liabilities [Abstract] |  |
Derivatives | 0 | 0
Total | 0 | 0
Recurring Basis [Member] | U.S. Treasury [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 135,310 | 125,024
Recurring Basis [Member] | U.S. Treasury [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 135,310 | 125,024
Recurring Basis [Member] | U.S. Treasury [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | U.S. Treasury [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Federal Agency [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 214,326 | 214,740
Recurring Basis [Member] | Federal Agency [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Federal Agency [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 214,326 | 214,740
Recurring Basis [Member] | Federal Agency [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | State & Municipal [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 86,002 | 86,306
Recurring Basis [Member] | State & Municipal [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | State & Municipal [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 86,002 | 86,306
Recurring Basis [Member] | State & Municipal [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Mortgage-Backed [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 392,332 | 422,268
Recurring Basis [Member] | Mortgage-Backed [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Mortgage-Backed [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 392,332 | 422,268
Recurring Basis [Member] | Mortgage-Backed [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Collateralized Mortgage Obligations [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 569,488 | 541,544
Recurring Basis [Member] | Collateralized Mortgage Obligations [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Collateralized Mortgage Obligations [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 569,488 | 541,544
Recurring Basis [Member] | Collateralized Mortgage Obligations [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Corporate [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 41,987 | 40,976
Recurring Basis [Member] | Corporate [Member] | Level 1 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Recurring Basis [Member] | Corporate [Member] | Level 2 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 41,987 | 40,976
Recurring Basis [Member] | Corporate [Member] | Level 3 [Member] |  |
AFS securities [Abstract] |  |
AFS securities | 0 | 0
Non-Recurring Basis [Member] |  |
Fair Value Measurements [Abstract] |  |
Loans individually evaluated for expected credit losses, fair value | $ 1,700 | $ 0

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