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BORROWINGS (Schedule of Maturities of Long-term Debt) (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |
FHLB fixed-rate advances maturing within one year of balance sheet date, Amount |  | $ 0 | $ 11,000,000
FHLB fixed-rate advances maturing within one year of balance sheet date, Rate |  | 0.00% | 2.69%
Long-term debt |  | $ 21,000,000 | $ 34,700,000
Long-term debt, Rate |  | 3.78% | 2.69%
Maximum borrowings from FHLB |  | $ 821,375,000 |
Available borrowings from FHLB |  | 808,275,000 |
Trust preferred subordinated debt |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt |  | $ 15,000,000 | $ 15,000,000
Effective rate, percentage |  | 4.00% | 4.00%
Interest rate percentage | 4.00% |  |
Subordinated debt issued | $ 15,000,000 |  |
Debt Instrument, Issuance Price, Percentage | 100.00% |  |
Loan payable variable rate, FCBI | Unsecured Debt |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt |  | $ 0 | $ 2,700,000
Effective rate, percentage |  | 0.00% | 3.32%
Interest rate percentage |  | 3.25% |
Trust Preferred Subordinated Debt, FCBI | Trust preferred subordinated debt |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt |  | $ 6,000,000 | $ 6,000,000
Effective rate, percentage |  | 3.21% | 1.69%
Subordinated debt issued |  | $ 6,000,000 |
London Interbank Offered Rate (LIBOR) | Trust Preferred Subordinated Debt, FCBI | Trust preferred subordinated debt |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate percentage |  | 6.399% |
Basis spread on prime rate, percentage |  | 1.63% |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Trust preferred subordinated debt |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on prime rate, percentage | 3.29% |  |

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