FAIR VALUE - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Assets:
Total securities available-for-sale	$ 1,031,938	$ 991,426
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Liabilities:
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities
Fair Value, Measurements, Recurring
Assets:
U.S. Treasury securities	$ 5,001
U.S. government sponsored agency securities	117,067	$ 109,435
Mortgage-backed securities: residential	448,208	422,409
State and municipal securities	461,662	459,582
Total securities available-for-sale	1,031,938	991,426
Mortgage banking derivative	73	94
Interest rate swap derivative	15,641	25,403
Total assets	1,047,652	1,016,923
Liabilities:
Mortgage banking derivative	1
Interest rate swap derivative	15,642	25,403
Total liabilities	15,643	25,403
Level 1 | Fair Value, Measurements, Recurring
Assets:
U.S. Treasury securities	5,001
U.S. government sponsored agency securities	0	0
Mortgage-backed securities: residential	0	0
State and municipal securities	0	0
Total securities available-for-sale	5,001	0
Mortgage banking derivative	0	0
Interest rate swap derivative	0	0
Total assets	5,001	0
Liabilities:
Mortgage banking derivative	0
Interest rate swap derivative	0	0
Total liabilities	0	0
Level 2 | Fair Value, Measurements, Recurring
Assets:
U.S. Treasury securities	0
U.S. government sponsored agency securities	117,067	109,435
Mortgage-backed securities: residential	448,208	422,409
State and municipal securities	457,212	454,922
Total securities available-for-sale	1,022,487	986,766
Mortgage banking derivative	73	94
Interest rate swap derivative	15,641	25,403
Total assets	1,038,201	1,012,263
Liabilities:
Mortgage banking derivative	1
Interest rate swap derivative	15,642	25,403
Total liabilities	15,643	25,403
Level 3 | Fair Value, Measurements, Recurring
Assets:
U.S. Treasury securities	0
U.S. government sponsored agency securities	0	0
Mortgage-backed securities: residential	0	0
State and municipal securities	4,450	4,660
Total securities available-for-sale	4,450	4,660
Mortgage banking derivative	0	0
Interest rate swap derivative	0	0
Total assets	4,450	4,660
Liabilities:
Mortgage banking derivative	0
Interest rate swap derivative	0	0
Total liabilities	$ 0	$ 0