Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
ASSETS
Debt securities	$ 973,839	$ 969,308
Equity securities	4,119	1,083
Derivative financial assets	70,313	63,018
LIABILITIES
Derivative financial liabilities	87,921	78,293
U.S. Treasury securities
ASSETS
Debt securities	113,449	133,786
Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	24,786	32,513
Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	519,325	460,939
Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,298	38,177
Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	256,540	273,425
Obligations of states and political subdivisions
ASSETS
Debt securities	24,441	30,468
Fair Value Measurements, Recurring
ASSETS
Debt securities	973,839	969,308
Equity securities	4,119	1,083
Total Securities Available for Sale	977,958	970,391
Securities held in a deferred compensation plan	10,503	9,399
Total Assets	1,058,774	1,042,808
LIABILITIES
Total Liabilities	87,921	78,293
Fair Value Measurements, Recurring | U.S. Treasury securities
ASSETS
Debt securities	113,449	133,786
Fair Value Measurements, Recurring | Obligations of U.S. government corporations and agencies
ASSETS
Debt securities	24,786	32,513
Fair Value Measurements, Recurring | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	519,325	460,939
Fair Value Measurements, Recurring | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,298	38,177
Fair Value Measurements, Recurring | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	256,540	273,425
Fair Value Measurements, Recurring | Obligations of states and political subdivisions
ASSETS
Debt securities	24,441	30,468
Fair Value Measurements, Recurring | Interest rate swaps - commercial loans
ASSETS
Derivative financial assets	70,313	63,018
LIABILITIES
Derivative financial liabilities	70,765	63,554
Fair Value Measurements, Recurring | Interest rate swaps - cash flow hedge
LIABILITIES
Derivative financial liabilities	17,156	14,739
Fair Value Measurements, Recurring | Level 1
ASSETS
Debt securities	113,449	133,786
Equity securities	4,119	1,010
Total Securities Available for Sale	117,568	134,796
Securities held in a deferred compensation plan	10,503	9,399
Total Assets	128,071	144,195
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring | Level 1 | U.S. Treasury securities
ASSETS
Debt securities	113,449	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 swaps - commercial loans
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 1 | Interest rate swaps - cash flow hedge
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 2
ASSETS
Debt securities	860,390	835,522
Equity securities	0	73
Total Securities Available for Sale	860,390	835,595
Securities held in a deferred compensation plan	0	0
Total Assets	930,703	898,613
LIABILITIES
Total Liabilities	87,921	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	24,786	32,513
Fair Value Measurements, Recurring | Level 2 | Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Debt securities	519,325	460,939
Fair Value Measurements, Recurring | Level 2 | Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	35,298	38,177
Fair Value Measurements, Recurring | Level 2 | Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Debt securities	256,540	273,425
Fair Value Measurements, Recurring | Level 2 | Obligations of states and political subdivisions
ASSETS
Debt securities	24,441	30,468
Fair Value Measurements, Recurring | Level 2 | Interest rate swaps - commercial loans
ASSETS
Derivative financial assets	70,313	63,018
LIABILITIES
Derivative financial liabilities	70,765	63,554
Fair Value Measurements, Recurring | Level 2 | Interest rate swaps - cash flow hedge
LIABILITIES
Derivative financial liabilities	17,156	14,739
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	0	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 swaps - commercial loans
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring | Level 3 | Interest rate swaps - cash flow hedge
LIABILITIES
Derivative financial liabilities	$ 0	$ 0