FAIR VALUE - Carrying amounts and Estimated fair values (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets:
SBA servicing assets	$ 19,000	$ 16,500
Recurring
Financial Assets:
SBA servicing assets	8,162	8,419
Interest only strips	26	27
Recurring | Carrying Amount
Financial Assets:
Cash, due from banks, and federal funds sold	276,413	138,427
Securities purchased under agreements to resell	15,000	15,000
Investment securities	15,695	18,888
FHLB stock	3,842	1,163
Loans, net	1,154,323	1,136,930
Loans held for sale	85,793	56,865
Accrued interest receivable	5,101	4,957
SBA servicing assets	8,162	8,419
Mortgage servicing assets	18,068	14,934
Interest only strips	26	27
Financial Liabilities:
Deposits	1,307,377	1,244,232
Federal Home Loan Bank advances	60,000
Other borrowings	3,129	4,257
Accrued interest payable	890	1,251
Recurring | Estimated Fair Value
Financial Assets:
Cash, due from banks, and federal funds sold	276,413	138,427
Securities purchased under agreements to resell	15,000	15,000
Investment securities	15,695	18,888
Loans, net	1,169,214	1,166,945
Loans held for sale	88,178	56,865
Accrued interest receivable	5,101	4,957
SBA servicing assets	8,162	8,419
Mortgage servicing assets	19,035	16,460
Interest only strips	26	27
Financial Liabilities:
Deposits	1,308,946	1,242,863
Federal Home Loan Bank advances	60,000
Other borrowings	3,129	4,257
Accrued interest payable	890	1,251
Level 2 | Recurring | Estimated Fair Value
Financial Assets:
Cash, due from banks, and federal funds sold	276,413	138,427
Securities purchased under agreements to resell	15,000	15,000
Investment securities	3,259	3,705
Loans held for sale	88,178	56,865
Financial Liabilities:
Deposits	1,308,946	1,242,863
Federal Home Loan Bank advances	60,000
Other borrowings	3,129	4,257
Accrued interest payable	890	1,251
Level 3 | Recurring
Financial Assets:
SBA servicing assets	8,162	8,419
Interest only strips	26	27
Level 3 | Recurring | Estimated Fair Value
Financial Assets:
Investment securities	12,436	15,183
Loans, net	1,169,214	1,166,945
Accrued interest receivable	5,101	4,957
SBA servicing assets	8,162	8,419
Mortgage servicing assets	19,035	16,460
Interest only strips	$ 26	$ 27