FAIR VALUE - Schedule of Carrying Amounts and Estimated Fair Value of Assets And Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Reported Value Measurement
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	$ 222,091	$ 499,605
Marketable securities held to maturity	494,289	184,263
Loans, net	1,983,449	1,876,076
Accrued interest receivable	8,961	8,901
Nonmarketable equity securities	12,513	15,344
Financial liabilities:
Deposits	2,797,410	2,670,827
Securities sold under repurchase agreements	11,090	14,151
Accrued interest payable	591	481
Federal Home Loan Bank advances	7,500	47,500
Subordinated debentures	54,146	19,810
Fair Value
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	222,091	499,605
Marketable securities held to maturity	490,523	192,472
Loans, net	1,951,997	1,883,756
Accrued interest receivable	8,961	8,901
Nonmarketable equity securities	12,513	15,344
Financial liabilities:
Deposits	2,797,744	2,671,404
Securities sold under repurchase agreements	11,090	14,151
Accrued interest payable	591	481
Federal Home Loan Bank advances	7,494	47,501
Subordinated debentures	52,190	17,833
Fair Value | Level 1 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	222,091	499,605
Marketable securities held to maturity	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Nonmarketable equity securities	0	0
Financial liabilities:
Deposits	2,473,118	2,341,048
Securities sold under repurchase agreements	0	0
Accrued interest payable	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures	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	490,523	192,472
Loans, net	0	0
Accrued interest receivable	8,961	8,901
Nonmarketable equity securities	12,513	15,344
Financial liabilities:
Deposits	324,626	330,356
Securities sold under repurchase agreements	11,090	14,151
Accrued interest payable	591	481
Federal Home Loan Bank advances	7,494	47,501
Subordinated debentures	52,190	17,833
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	1,951,997	1,883,756
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 debentures	$ 0	$ 0