FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial assets:
Cash and due from financial institutions	$ 22,984	$ 22,247
Interest-earning deposits in other financial institutions	71,878	14,600
Debt Securities, Available-for-Sale	566,028	583,993
Securities held to maturity	785	785
Loans, net and loans held for sale	1,983,139	1,950,147
Derivative assets	25,806	23,942
Deposits [Abstract]
FHLBNY overnight advances	0	31,920
FRB term advance	50,000	0
Derivative liabilities	25,811	23,981
Recurring
Financial assets:
Debt Securities, Available-for-Sale	566,028	583,993
Derivative assets	25,806	23,942
Deposits [Abstract]
Derivative liabilities	25,811	23,981
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Debt Securities, Available-for-Sale	55,162	55,332
Derivative assets	0	0
Deposits [Abstract]
Derivative liabilities	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets:
Debt Securities, Available-for-Sale	503,145	521,131
Derivative assets	25,806	23,942
Deposits [Abstract]
Derivative liabilities	25,811	23,981
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets:
Debt Securities, Available-for-Sale	7,721	7,530
Derivative assets	0	0
Deposits [Abstract]
Derivative liabilities	0	0
Recurring | Carrying Amount
Financial assets:
Cash and due from financial institutions	22,984	22,247
Interest-earning deposits in other financial institutions	71,878	14,600
Equity investments	3,093	3,046
Debt Securities, Available-for-Sale	566,028	583,993
Securities held to maturity	785	785
FHLBNY and FRBNY stock	4,071	5,498
Loans, net and loans held for sale	2,003,706	1,972,664
Derivative assets	25,806	23,942
Deposits [Abstract]
Demand, savings, and insured money market deposits	1,851,412	1,817,162
Time deposits	629,360	612,265
FHLBNY overnight advances	0	31,920
FRB term advance	50,000
Derivative liabilities	25,811	23,981
Recurring | Estimated Fair Value
Financial assets:
Cash and due from financial institutions	22,984	22,247
Interest-earning deposits in other financial institutions	71,878	14,600
Equity investments	3,093	3,046
Debt Securities, Available-for-Sale	566,028	583,993
Securities held to maturity	785	785
Loans, net and loans held for sale	1,896,266	1,875,390
Derivative assets	25,806	23,942
Deposits [Abstract]
Demand, savings, and insured money market deposits	1,851,412	1,817,162
Time deposits	626,423	609,863
FHLBNY overnight advances	0	31,925
FRB term advance	49,828
Derivative liabilities	25,811	23,981
Recurring | Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and due from financial institutions	22,984	22,247
Interest-earning deposits in other financial institutions	71,878	14,600
Equity investments	3,093	3,046
Debt Securities, Available-for-Sale	55,162	55,332
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Derivative assets	0	0
Deposits [Abstract]
Demand, savings, and insured money market deposits	1,851,412	1,817,162
Time deposits	0	0
FHLBNY overnight advances	0	0
FRB term advance	0
Derivative liabilities	0	0
Recurring | Estimated Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and due from financial institutions	0	0
Interest-earning deposits in other financial institutions	0	0
Equity investments	0	0
Debt Securities, Available-for-Sale	503,145	521,131
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Derivative assets	25,806	23,942
Deposits [Abstract]
Demand, savings, and insured money market deposits	0	0
Time deposits	626,423	609,863
FHLBNY overnight advances	0	31,925
FRB term advance	49,828
Derivative liabilities	25,811	23,981
Recurring | Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and due from financial institutions	0	0
Interest-earning deposits in other financial institutions	0	0
Equity investments	0	0
Debt Securities, Available-for-Sale	7,721	7,530
Securities held to maturity	785	785
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	1,896,266	1,875,390
Derivative assets	0	0
Deposits [Abstract]
Demand, savings, and insured money market deposits	0	0
Time deposits	0	0
FHLBNY overnight advances	0	0
FRB term advance	0
Derivative liabilities	$ 0	$ 0