FAIR VALUE - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial assets:
Loans, net		$ 4,244
Level 3 Inputs
Financial assets:
Loans, net		4,244
Reported Value Measurement
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	$ 124,169	499,605
Marketable securities held to maturity	633,386	184,263
Loans, net	2,234,782	1,876,076
Accrued interest receivable	10,111	8,901
Nonmarketable equity securities	23,529	15,344
Financial liabilities:
Deposits	2,790,510	2,670,827
Securities sold under repurchase agreements	7,592	14,151
Accrued interest payable	1,192	481
Federal Home Loan Bank advances	225,000	47,500
Subordinated debentures	51,119	19,810
Fair Value
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	124,169	499,605
Marketable securities held to maturity	595,844	192,472
Loans, net	2,147,119	1,883,756
Accrued interest receivable	10,111	8,901
Nonmarketable equity securities	23,529	15,344
Financial liabilities:
Deposits	2,789,308	2,671,404
Securities sold under repurchase agreements	7,592	14,151
Accrued interest payable	1,192	481
Federal Home Loan Bank advances	224,675	47,501
Subordinated debentures	51,275	17,833
Fair Value | Level 1 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	124,169	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	2,450,301	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	595,844	192,472
Loans, net	0	0
Accrued interest receivable	10,111	8,901
Nonmarketable equity securities	23,529	15,344
Financial liabilities:
Deposits	339,007	330,356
Securities sold under repurchase agreements	7,592	14,151
Accrued interest payable	1,192	481
Federal Home Loan Bank advances	224,675	47,501
Subordinated debentures	51,275	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	2,147,119	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