FAIR VALUE - Summary of Financial Instruments at Carrying Amounts and Estimated Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financial Assets
Interest-bearing deposits with banks	$ 112,122	$ 107,691
Restricted investments in bank stock	23,984	26,717
Investment securities	947,018	952,740
Carrying Amount
Financial Assets
Cash and due from banks	49,014	42,083
Interest-bearing deposits with banks	112,122	107,691
Restricted investments in bank stock	23,984	26,717
Investment securities	947,018	952,740
Loans held for sale	3,366	6,090
Loans, net of allowance for credit losses	4,013,856	3,973,012
Accrued interest receivable	21,176	21,473
Financial Liabilities
Deposits	4,627,424	4,528,774
Securities sold under agreements to repurchase and federal funds purchased	19,264	24,542
FHLB advances and other borrowings	206,694	274,701
Subordinated notes and trust preferred debt	37,274	37,122
Accrued interest payable	3,140	3,497
Off-balance sheet instruments	0	0
Carrying Amount | Derivatives
Financial Assets
Derivatives	13,114	14,676
Financial Liabilities
Derivatives	12,652	15,138
Fair Value
Financial Liabilities
Off-balance sheet instruments	0	0
Fair Value | Fair Value
Financial Assets
Cash and due from banks	49,014	42,083
Interest-bearing deposits with banks	112,122	107,691
Investment securities	947,018	952,740
Loans held for sale	3,366	6,090
Loans, net of allowance for credit losses	3,940,737	3,934,248
Accrued interest receivable	21,176	21,473
Financial Liabilities
Deposits	4,626,352	4,527,619
Securities sold under agreements to repurchase and federal funds purchased	19,264	24,542
FHLB advances and other borrowings	206,663	274,765
Subordinated notes and trust preferred debt	38,894	38,861
Accrued interest payable	3,140	3,497
Fair Value | Fair Value | Derivatives
Financial Assets
Derivatives	13,114	14,676
Financial Liabilities
Derivatives	12,652	15,138
Fair Value | Level 1
Financial Assets
Cash and due from banks	49,014	42,083
Interest-bearing deposits with banks	112,122	107,691
Investment securities	14,437	14,454
Loans held for sale	0	0
Loans, net of allowance for credit losses	0	0
Accrued interest receivable	0	0
Financial Liabilities
Deposits	0	0
Securities sold under agreements to repurchase and federal funds purchased	0	0
FHLB advances and other borrowings	0	0
Subordinated notes and trust preferred debt	0	0
Accrued interest payable	0	0
Off-balance sheet instruments	0	0
Fair Value | Level 1 | Derivatives
Financial Assets
Derivatives	0	0
Financial Liabilities
Derivatives	0	0
Fair Value | Level 2
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Investment securities	915,471	922,958
Loans held for sale	3,366	6,090
Loans, net of allowance for credit losses	0	0
Accrued interest receivable	4,558	5,026
Financial Liabilities
Deposits	4,626,352	4,527,619
Securities sold under agreements to repurchase and federal funds purchased	19,264	24,542
FHLB advances and other borrowings	206,663	274,765
Subordinated notes and trust preferred debt	38,894	38,861
Accrued interest payable	3,140	3,497
Off-balance sheet instruments	0	0
Fair Value | Level 2 | Derivatives
Financial Assets
Derivatives	13,051	14,638
Financial Liabilities
Derivatives	12,652	15,138
Fair Value | Level 3
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Investment securities	17,110	15,328
Loans held for sale	0	0
Loans, net of allowance for credit losses	3,940,737	3,934,248
Accrued interest receivable	16,618	16,447
Financial Liabilities
Deposits	0	0
Securities sold under agreements to repurchase and federal funds purchased	0	0
FHLB advances and other borrowings	0	0
Subordinated notes and trust preferred debt	0	0
Accrued interest payable	0	0
Off-balance sheet instruments	0	0
Fair Value | Level 3 | Derivatives
Financial Assets
Derivatives	63	38
Financial Liabilities
Derivatives	$ 0	$ 0