FAIR VALUE - Schedule of Carrying Amounts and Estimated Fair Value of Assets And Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Loans, net	$ 1,148	$ 4,244
Level 3 Inputs
Financial assets:
Loans, net	1,148	4,244
Reported Value Measurement
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	71,023	499,605
Marketable securities held to maturity	713,390	184,263
Loans, net	2,107,658	1,876,076
Accrued interest receivable	10,144	8,901
Nonmarketable equity securities	17,753	15,344
Financial liabilities:
Deposits	2,779,621	2,670,827
Securities sold under repurchase agreements	7,871	14,151
Accrued interest payable	1,008	481
Federal Home Loan Bank advances	131,500	47,500
Subordinated debentures	51,053	19,810
Fair Value
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	71,023	499,605
Marketable securities held to maturity	682,497	192,472
Loans, net	2,056,757	1,883,756
Accrued interest receivable	10,144	8,901
Nonmarketable equity securities	17,753	15,344
Financial liabilities:
Deposits	2,779,234	2,671,404
Securities sold under repurchase agreements	7,871	14,151
Accrued interest payable	1,008	481
Federal Home Loan Bank advances	131,450	47,501
Subordinated debentures	49,306	17,833
Fair Value | Level 1 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	71,023	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	2,452,997	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	682,497	192,472
Loans, net	0	0
Accrued interest receivable	10,144	8,901
Nonmarketable equity securities	17,753	15,344
Financial liabilities:
Deposits	326,237	330,356
Securities sold under repurchase agreements	7,871	14,151
Accrued interest payable	1,008	481
Federal Home Loan Bank advances	131,450	47,501
Subordinated debentures	49,306	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	2,056,757	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