FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial assets:
Cash and due from financial institutions	$ 25,109	$ 29,309
Interest-earning deposits in other financial institutions	9,532	26,560
Securities available for sale	626,055	632,589
Securities held to maturity	1,932	2,424
Loans, net and loans held for sale	1,853,626	1,809,789
Derivative assets	22,710	27,141
Deposits [Abstract]
Derivative Liabilities	22,776	27,196
Recurring
Financial assets:
Securities available for sale	626,055	632,589
Derivative assets	22,710	27,141
Deposits [Abstract]
Derivative Liabilities	22,776	27,196
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Securities available for sale	56,328	55,574
Derivative assets	0	0
Deposits [Abstract]
Derivative Liabilities	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets:
Securities available for sale	561,061	577,015
Derivative assets	22,710	27,141
Deposits [Abstract]
Derivative Liabilities	22,776	27,196
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets:
Securities available for sale	8,666	0
Derivative assets	0	0
Deposits [Abstract]
Derivative Liabilities	0	0
Recurring | Carrying Amount
Financial assets:
Cash and due from financial institutions	25,109	29,309
Interest-earning deposits in other financial institutions	9,532	26,560
Equity investments	2,949	2,830
Securities available for sale	626,055	632,589
Securities held to maturity	1,932	2,424
FHLBNY and FRBNY stock	7,913	8,197
Loans, net and loans held for sale	1,853,626	1,809,789
Accrued interest receivable	8,469	8,682
Derivative assets	22,710	27,141
Deposits [Abstract]
Demand, savings, and insured money market accounts	1,880,335	1,924,843
Time deposits	452,094	402,384
Accrued interest payable	1,500	864
Derivative Liabilities	22,776	27,196
Recurring | Estimated Fair Value
Financial assets:
Cash and due from financial institutions	25,109	29,309
Interest-earning deposits in other financial institutions	9,532	26,560
Equity investments	2,949	2,830
Securities available for sale	626,055	632,589
Securities held to maturity	1,905	3,796
Loans, net and loans held for sale	1,790,939	1,757,171
Accrued interest receivable	8,469	8,682
Derivative assets	22,710	27,141
Deposits [Abstract]
Demand, savings, and insured money market accounts	1,880,335	1,924,843
Time deposits	450,201	403,572
Accrued interest payable	1,500	864
Derivative Liabilities	22,776	27,196
Recurring | Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and due from financial institutions	25,109	29,309
Interest-earning deposits in other financial institutions	9,532	26,560
Equity investments	2,949	2,830
Securities available for sale	56,328	55,574
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Accrued interest receivable	229	132
Derivative assets	0	0
Deposits [Abstract]
Demand, savings, and insured money market accounts	1,880,335	1,924,843
Time deposits	0	0
Accrued interest payable	73	64
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	561,061	577,015
Securities held to maturity	953	1,639
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Accrued interest receivable	1,900	2,002
Derivative assets	22,710	27,141
Deposits [Abstract]
Demand, savings, and insured money market accounts	0	0
Time deposits	450,201	403,572
Accrued interest payable	1,427	800
Derivative Liabilities	22,776	27,196
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	8,666	0
Securities held to maturity	952	2,157
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	1,790,939	1,757,171
Accrued interest receivable	6,340	6,548
Derivative assets	0	0
Deposits [Abstract]
Demand, savings, and insured money market accounts	0	0
Time deposits	0	0
Accrued interest payable	0	0
Derivative Liabilities	$ 0	$ 0