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BORROWINGS (Details) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 08, 2017 | Jul. 14, 2006 | Dec. 07, 2005 | Dec. 31, 2023 | Dec. 31, 2022
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Available collateral to borrow an additional amount from FHLB |  |  |  | $ 3,100,000,000 |
Redemption of subordinated debt |  |  |  |  | $ 24,712,000
Floating Rate Junior Subordinated Debentures (the "Debentures") |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Description of periodic payment |  |  |  | twenty consecutive quarterly payments |
Period for periodic payment |  |  |  | 5 years |
Subordinated Debt |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Debt instrument face amount | $ 25,000,000.0 |  |  |  |
Maturity date | Mar. 15, 2027 |  |  |  |
Interest rate | 6.25% |  |  |  |
Metbank Capital Trust I |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Investment in common securities of the trust |  |  | $ 310,000 |  |
Trust preferred securities issued |  |  | 10,000,000.0 |  |
Metbank Capital Trust I | Floating Rate Junior Subordinated Debentures (the "Debentures") |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Debt instrument face amount |  |  | $ 10,300,000 |  |
Maturity date |  |  | Dec. 09, 2035 |  |
Interest rate during period |  |  |  | 7.51% | 5.93%
Metbank Capital Trust I | Floating Rate Junior Subordinated Debentures (the "Debentures") | London Interbank Offered Rate (LIBOR) |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Description of LIBOR rate basis |  |  |  |  | three-month LIBOR
Basis spread on LIBOR variable rate |  |  |  |  | 1.85%
Metbank Capital Trust I | Floating Rate Junior Subordinated Debentures (the "Debentures") | Secured Overnight Financing Rate (SOFR) |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Description of LIBOR rate basis |  |  |  | three-month SOFR |
Basis spread on LIBOR variable rate |  |  |  | 1.85% |
Metbank Capital Trust II |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Investment in common securities of the trust |  | $ 310,000 |  |  |
Trust preferred securities issued |  | 10,000,000 |  |  |
Metbank Capital Trust II | Floating Rate Junior Subordinated Debentures (the "Debentures") |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Debt instrument face amount |  | $ 10,300,000 |  |  |
Maturity date |  | Oct. 07, 2036 |  |  |
Interest rate during period |  |  |  | 7.66% | 6.08%
Metbank Capital Trust II | Floating Rate Junior Subordinated Debentures (the "Debentures") | London Interbank Offered Rate (LIBOR) |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Description of LIBOR rate basis |  |  |  |  | three-month LIBOR
Basis spread on LIBOR variable rate |  |  |  |  | 2.00%
Metbank Capital Trust II | Floating Rate Junior Subordinated Debentures (the "Debentures") | Secured Overnight Financing Rate (SOFR) |  |  |  |  |
Federal Home Loan Bank, Advances [Line Items] |  |  |  |  |
Description of LIBOR rate basis |  |  |  | three-month SOFR |
Basis spread on LIBOR variable rate |  |  |  | 2.00% |

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