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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
ASSETS
Debt securities	$ 999,830	$ 986,415
Equity securities	1,319	1,176
Derivative financial assets	35,758	60,890
LIABILITIES
Derivative financial liabilities	39,241	70,860
U.S. Treasury securities
ASSETS
Debt securities	94,262	92,768
Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	0	15,071
Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	637,536	596,284
Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	31,856	33,207
Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	231,233	224,798
Obligations of states and political subdivisions
ASSETS
Debt securities	4,943	24,287
Fair Value Measurements, Recurring
ASSETS
Debt securities	999,830	986,415
Equity securities	1,319	1,176
Total Securities Available for Sale	1,001,149	987,591
Securities held in a deferred compensation plan	13,609	10,876
Total Assets	1,050,516	1,059,357
LIABILITIES
Total Liabilities	39,241	70,860
Fair Value Measurements, Recurring | U.S. Treasury securities
ASSETS
Debt securities	94,262	92,768
Fair Value Measurements, Recurring | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities		15,071
Fair Value Measurements, Recurring | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	637,536	596,284
Fair Value Measurements, Recurring | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	31,856	33,207
Fair Value Measurements, Recurring | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	231,233	224,798
Fair Value Measurements, Recurring | Obligations of states and political subdivisions
ASSETS
Debt securities	4,943	24,287
Fair Value Measurements, Recurring | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	35,739	60,890
LIABILITIES
Derivative financial liabilities	36,042	61,271
Fair Value Measurements, Recurring | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	19
Fair Value Measurements, Recurring | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	3,199	9,589
Fair Value Measurements, Recurring | Level 1
ASSETS
Debt securities	94,262	92,768
Equity securities	1,319	1,176
Total Securities Available for Sale	95,581	93,944
Securities held in a deferred compensation plan	13,609	10,876
Total Assets	109,190	104,820
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring | Level 1 | U.S. Treasury securities
ASSETS
Debt securities	94,262	92,768
Fair Value Measurements, Recurring | Level 1 | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities		0
Fair Value Measurements, Recurring | Level 1 | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 1 | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 1 | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 1 | Obligations of states and political subdivisions
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 1 | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 1 | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	0
Fair Value Measurements, Recurring | Level 1 | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 2
ASSETS
Debt securities	905,568	893,647
Equity securities	0	0
Total Securities Available for Sale	905,568	893,647
Securities held in a deferred compensation plan	0	0
Total Assets	941,307	954,537
LIABILITIES
Total Liabilities	39,241	70,860
Fair Value Measurements, Recurring | Level 2 | U.S. Treasury securities
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 2 | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities		15,071
Fair Value Measurements, Recurring | Level 2 | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	637,536	596,284
Fair Value Measurements, Recurring | Level 2 | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	31,856	33,207
Fair Value Measurements, Recurring | Level 2 | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	231,233	224,798
Fair Value Measurements, Recurring | Level 2 | Obligations of states and political subdivisions
ASSETS
Debt securities	4,943	24,287
Fair Value Measurements, Recurring | Level 2 | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	35,739	60,890
LIABILITIES
Derivative financial liabilities	36,042	61,271
Fair Value Measurements, Recurring | Level 2 | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	0
Fair Value Measurements, Recurring | Level 2 | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	3,199	9,589
Fair Value Measurements, Recurring | Level 3
ASSETS
Debt securities	0	0
Equity securities	0	0
Total Securities Available for Sale	0	0
Securities held in a deferred compensation plan	0	0
Total Assets	19	0
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring | Level 3 | U.S. Treasury securities
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 3 | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities		0
Fair Value Measurements, Recurring | Level 3 | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 3 | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 3 | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 3 | Obligations of states and political subdivisions
ASSETS
Debt securities	0	0
Fair Value Measurements, Recurring | Level 3 | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 3 | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	19
Fair Value Measurements, Recurring | Level 3 | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	$ 0	$ 0

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