Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
ASSETS
Debt securities	$ 1,006,857	$ 969,308
Equity securities	4,455	1,083
Derivative financial assets	45,754	63,018
LIABILITIES
Derivative financial liabilities	53,271	78,293
U.S. Treasury securities
ASSETS
Debt securities	118,109	133,786
Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	15,026	32,513
Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	565,312	460,939
Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,653	38,177
Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	248,044	273,425
Obligations of states and political subdivisions
ASSETS
Debt securities	24,713	30,468
Fair Value Measurements, Recurring
ASSETS
Debt securities	1,006,857	969,308
Equity securities	4,455	1,083
Total Securities Available for Sale	1,011,312	970,391
Securities held in a deferred compensation plan	10,800	9,399
Total Assets	1,067,866	1,042,808
LIABILITIES
Total Liabilities	53,271	78,293
Fair Value Measurements, Recurring | U.S. Treasury securities
ASSETS
Debt securities	118,109	133,786
Fair Value Measurements, Recurring | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	15,026	32,513
Fair Value Measurements, Recurring | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	565,312	460,939
Fair Value Measurements, Recurring | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,653	38,177
Fair Value Measurements, Recurring | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	248,044	273,425
Fair Value Measurements, Recurring | Obligations of states and political subdivisions
ASSETS
Debt securities	24,713	30,468
Fair Value Measurements, Recurring | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	45,690	63,018
LIABILITIES
Derivative financial liabilities	46,156	63,554
Fair Value Measurements, Recurring | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	7,115	14,739
Fair Value Measurements, Recurring | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	64
Fair Value Measurements, Recurring | Level 1
ASSETS
Debt securities	118,109	133,786
Equity securities	4,455	1,010
Total Securities Available for Sale	122,564	134,796
Securities held in a deferred compensation plan	10,800	9,399
Total Assets	133,364	144,195
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring | Level 1 | U.S. Treasury securities
ASSETS
Debt securities	118,109	133,786
Fair Value Measurements, Recurring | Level 1 | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	0	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 swap contracts - cash flow hedge
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 2
ASSETS
Debt securities	888,748	835,522
Equity securities	0	73
Total Securities Available for Sale	888,748	835,595
Securities held in a deferred compensation plan	0	0
Total Assets	934,438	898,613
LIABILITIES
Total Liabilities	53,271	78,293
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	15,026	32,513
Fair Value Measurements, Recurring | Level 2 | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	565,312	460,939
Fair Value Measurements, Recurring | Level 2 | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,653	38,177
Fair Value Measurements, Recurring | Level 2 | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	248,044	273,425
Fair Value Measurements, Recurring | Level 2 | Obligations of states and political subdivisions
ASSETS
Debt securities	24,713	30,468
Fair Value Measurements, Recurring | Level 2 | Interest rate swap contracts - commercial loans
ASSETS
Derivative financial assets	45,690	63,018
LIABILITIES
Derivative financial liabilities	46,156	63,554
Fair Value Measurements, Recurring | Level 2 | Interest rate swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	7,115	14,739
Fair Value Measurements, Recurring | Level 2 | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	0
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	64	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	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 swap contracts - cash flow hedge
LIABILITIES
Derivative financial liabilities	0	$ 0
Fair Value Measurements, Recurring | Level 3 | Interest rate lock commitments - mortgage loans
ASSETS
Derivative financial assets	$ 64