Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Available-for-sale debt securities	$ 1,001,784	$ 909,651
Marketable equity securities	994	1,142
Derivative financial assets	83,456	33,933
LIABILITIES
Derivative financial liabilities	104,817	33,631
Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative financial assets	83,456	33,933
LIABILITIES
Derivative financial liabilities	83,449	33,631
Derivatives Designated as Hedging Instruments
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	21,368	0
U.S. Treasury securities
ASSETS
Available-for-sale debt securities	131,695	95,327
Obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,811	70,348
Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	428,407	270,294
Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,587	56,793
Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	327,313	341,300
Obligations of states and political subdivisions
ASSETS
Available-for-sale debt securities	30,471	75,089
Fair Value Measurements, Recurring
ASSETS
Available-for-sale debt securities	1,001,784	909,651
Marketable equity securities	994	1,142
Total Securities	1,002,778	910,793
Trading securities held in a deferred compensation plan	8,087	10,230
Total Assets	1,094,321	954,956
LIABILITIES
Total Liabilities	104,817	33,631
Fair Value Measurements, Recurring \| U.S. Treasury securities
ASSETS
Available-for-sale debt securities	131,695	95,327
Fair Value Measurements, Recurring \| Obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,811	70,348
Fair Value Measurements, Recurring \| Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	428,407	270,294
Fair Value Measurements, Recurring \| Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,587	56,793
Fair Value Measurements, Recurring \| Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	327,313	341,300
Fair Value Measurements, Recurring \| Corporate obligations
ASSETS
Available-for-sale debt securities	500	500
Fair Value Measurements, Recurring \| Obligations of states and political subdivisions
ASSETS
Available-for-sale debt securities	30,471	75,089
Fair Value Measurements, Recurring \| Interest rate swaps \| Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative financial assets	83,449	33,528
LIABILITIES
Derivative financial liabilities	83,449	33,631
Fair Value Measurements, Recurring \| Interest rate swaps \| Derivatives Designated as Hedging Instruments
LIABILITIES
Derivative financial liabilities	21,368
Fair Value Measurements, Recurring \| Interest rate lock commitments
ASSETS
Derivative financial assets	5	401
Fair Value Measurements, Recurring \| Forward sale contracts
ASSETS
Derivative financial assets	2	4
Fair Value Measurements, Recurring \| Level 1
ASSETS
Available-for-sale debt securities	131,695	95,327
Marketable equity securities	952	1,061
Total Securities	132,647	96,388
Trading securities held in a deferred compensation plan	8,087	10,230
Total Assets	140,734	106,618
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring \| Level 1 \| U.S. Treasury securities
ASSETS
Available-for-sale debt securities	131,695	95,327
Fair Value Measurements, Recurring \| Level 1 \| Obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Corporate obligations
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Obligations of states and political subdivisions
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Interest rate swaps \| Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring \| Level 1 \| Interest rate swaps \| Derivatives Designated as Hedging Instruments
LIABILITIES
Derivative financial liabilities	0
Fair Value Measurements, Recurring \| Level 1 \| Interest rate lock commitments
ASSETS
Derivative financial assets	0	0
Fair Value Measurements, Recurring \| Level 1 \| Forward sale contracts
ASSETS
Derivative financial assets	0	0
Fair Value Measurements, Recurring \| Level 2
ASSETS
Available-for-sale debt securities	870,089	814,324
Marketable equity securities	42	81
Total Securities	870,131	814,405
Trading securities held in a deferred compensation plan	0	0
Total Assets	953,580	847,933
LIABILITIES
Total Liabilities	104,817	33,631
Fair Value Measurements, Recurring \| Level 2 \| U.S. Treasury securities
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 2 \| Obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,811	70,348
Fair Value Measurements, Recurring \| Level 2 \| Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	428,407	270,294
Fair Value Measurements, Recurring \| Level 2 \| Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	41,587	56,793
Fair Value Measurements, Recurring \| Level 2 \| Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	327,313	341,300
Fair Value Measurements, Recurring \| Level 2 \| Corporate obligations
ASSETS
Available-for-sale debt securities	500	500
Fair Value Measurements, Recurring \| Level 2 \| Obligations of states and political subdivisions
ASSETS
Available-for-sale debt securities	30,471	75,089
Fair Value Measurements, Recurring \| Level 2 \| Interest rate swaps \| Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative financial assets	83,449	33,528
LIABILITIES
Derivative financial liabilities	83,449	33,631
Fair Value Measurements, Recurring \| Level 2 \| Interest rate swaps \| Derivatives Designated as Hedging Instruments
LIABILITIES
Derivative financial liabilities	21,368
Fair Value Measurements, Recurring \| Level 2 \| Interest rate lock commitments
ASSETS
Derivative financial assets	0	0
Fair Value Measurements, Recurring \| Level 2 \| Forward sale contracts
ASSETS
Derivative financial assets	0	0
Fair Value Measurements, Recurring \| Level 3
ASSETS
Available-for-sale debt securities	0	0
Marketable equity securities	0	0
Total Securities	0	0
Trading securities held in a deferred compensation plan	0	0
Total Assets	7	405
LIABILITIES
Total Liabilities	0	0
Fair Value Measurements, Recurring \| Level 3 \| U.S. Treasury securities
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Collateralized mortgage obligations of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Residential mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Commercial mortgage-backed securities of U.S. government corporations and agencies
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Corporate obligations
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Obligations of states and political subdivisions
ASSETS
Available-for-sale debt securities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Interest rate swaps \| Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative financial assets	0	0
LIABILITIES
Derivative financial liabilities	0	0
Fair Value Measurements, Recurring \| Level 3 \| Interest rate swaps \| Derivatives Designated as Hedging Instruments
LIABILITIES
Derivative financial liabilities	0
Fair Value Measurements, Recurring \| Level 3 \| Interest rate lock commitments
ASSETS
Derivative financial assets	5	401
Fair Value Measurements, Recurring \| Level 3 \| Forward sale contracts
ASSETS
Derivative financial assets	$ 2	$ 4

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