FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial assets:
Cash and due from financial institutions	$ 23,184	$ 22,247
Interest-earning deposits in other financial institutions	47,033	14,600
Securities available for sale	550,927	583,993
Securities held to maturity	657	785
Loans, net and loans held for sale	1,990,441	1,950,147
Derivative assets	25,424	23,942
Deposits:
FHLBNY and FRB advances	80,000	31,920
Derivative liabilities	25,432	23,981
Recurring
Financial assets:
Securities available for sale	550,927	583,993
Derivative assets	25,424	23,942
Deposits:
Derivative liabilities	25,432	23,981
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Securities available for sale	55,474	55,332
Derivative assets	0	0
Deposits:
Derivative liabilities	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets:
Securities available for sale	489,278	521,131
Derivative assets	25,424	23,942
Deposits:
Derivative liabilities	25,432	23,981
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets:
Securities available for sale	6,175	7,530
Derivative assets	0	0
Deposits:
Derivative liabilities	0	0
Recurring | Carrying Amount
Financial assets:
Cash and due from financial institutions	23,184	22,247
Interest-earning deposits in other financial institutions	47,033	14,600
Equity investments	3,090	3,046
Securities available for sale	550,927	583,993
Securities held to maturity	657	785
FHLBNY and FRBNY stock	5,506	5,498
Loans, net and loans held for sale	2,011,853	1,972,664
Derivative assets	25,424	23,942
Deposits:
Demand, savings, and insured money market deposits	1,809,221	1,817,162
Time deposits	606,700	612,265
FHLBNY and FRB advances	80,000	31,920
Derivative liabilities	25,432	23,981
Recurring | Estimated Fair Value
Financial assets:
Cash and due from financial institutions	23,184	22,247
Interest-earning deposits in other financial institutions	47,033	14,600
Equity investments	3,090	3,046
Securities available for sale	550,927	583,993
Securities held to maturity	657	785
Loans, net and loans held for sale	1,913,709	1,875,390
Derivative assets	25,424	23,942
Deposits:
Demand, savings, and insured money market deposits	1,809,221	1,817,162
Time deposits	605,968	609,863
FHLBNY and FRB advances	79,844	31,925
Derivative liabilities	25,432	23,981
Recurring | Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and due from financial institutions	23,184	22,247
Interest-earning deposits in other financial institutions	47,033	14,600
Equity investments	3,090	3,046
Securities available for sale	55,474	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:
Demand, savings, and insured money market deposits	1,809,221	1,817,162
Time deposits	0	0
FHLBNY and FRB advances	0	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
Securities available for sale	489,278	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	25,424	23,942
Deposits:
Demand, savings, and insured money market deposits	0	0
Time deposits	605,968	609,863
FHLBNY and FRB advances	79,844	31,925
Derivative liabilities	25,432	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
Securities available for sale	6,175	7,530
Securities held to maturity	657	785
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	1,913,709	1,875,390
Derivative assets	0	0
Deposits:
Demand, savings, and insured money market deposits	0	0
Time deposits	0	0
FHLBNY and FRB advances	0	0
Derivative liabilities	$ 0	$ 0