BORROWINGS AND RELATED INTEREST (Advances from the Federal Home Loan Bank of New York) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Additional borrowing capacity	$ 346,400	$ 628,100
Weighted average period remaining maturity of FHLB advances	1 year 4 months 24 days	3 days
Advances from the Federal Home Loan Bank \| Federal Loan Home Bank Advances Short Term Period
Debt Instrument [Line Items]
Original debt instrument term of FHLB advances	3 days
Asset Pledged as Collateral \| Advances from the Federal Home Loan Bank
Debt Instrument [Line Items]
Total Loans	$ 954,900	$ 951,100
Advances from the Federal Home Loan Bank
Debt Instrument [Line Items]
Minimum amount of qualifying collateral	110.00%
Accrued interest payable	$ 774	$ 103
Advances from the Federal Home Loan Bank \| Long-Term Fixed-Rate Advances from FHLB
Debt Instrument [Line Items]
Original debt instrument term of FHLB advances	2 years

Weighted average maturity (weighted by amount of the agreement) of FHLB advances.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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