FAIR VALUE - Schedule of Carrying Amounts and Estimated Fair Value of Assets And Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial assets:
Loans, net	$ 14,527
Level 3 Inputs
Financial assets:
Loans, net	14,527
Reported Value Measurement
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	89,524	$ 106,467
Marketable securities held to maturity	404,208	509,008
Loans, net	2,290,881	2,344,245
Accrued interest receivable	13,143	11,555
Nonmarketable equity securities	24,128	25,585
Financial liabilities:
Deposits	2,633,246	2,681,154
Securities sold under repurchase agreements	25,172	7,221
Accrued interest payable	5,272	2,348
Federal Home Loan Bank advances	140,000	290,000
Subordinated debt	45,785	49,153
Fair Value
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	89,524	106,467
Marketable securities held to maturity	374,523	475,068
Loans, net	2,187,669	2,217,606
Accrued interest receivable	13,143	11,555
Nonmarketable equity securities	24,128	25,585
Financial liabilities:
Deposits	2,634,137	2,678,596
Securities sold under repurchase agreements	25,172	7,221
Accrued interest payable	5,272	2,348
Federal Home Loan Bank advances	139,963	289,926
Subordinated debt	46,433	50,025
Fair Value | Level 1 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	89,524	106,467
Marketable securities held to maturity	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Nonmarketable equity securities	0	0
Financial liabilities:
Deposits	1,928,063	2,326,615
Securities sold under repurchase agreements	0	0
Accrued interest payable	0	0
Federal Home Loan Bank advances	0	0
Subordinated debt	0	0
Fair Value | Level 2 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	0	0
Marketable securities held to maturity	374,523	475,068
Loans, net	0	0
Accrued interest receivable	13,143	11,555
Nonmarketable equity securities	24,128	25,585
Financial liabilities:
Deposits	706,074	351,981
Securities sold under repurchase agreements	25,172	7,221
Accrued interest payable	5,272	2,348
Federal Home Loan Bank advances	139,963	289,926
Subordinated debt	46,433	50,025
Fair Value | Level 3 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	0	0
Marketable securities held to maturity	0	0
Loans, net	2,187,669	2,217,606
Accrued interest receivable	0	0
Nonmarketable equity securities	0	0
Financial liabilities:
Deposits	0	0
Securities sold under repurchase agreements	0	0
Accrued interest payable	0	0
Federal Home Loan Bank advances	0	0
Subordinated debt	$ 0	$ 0