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FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets:
Cash and due from financial institutions	$ 27,522	$ 25,203
Interest-earning deposits in other financial institutions	116,936	96,701
Securities available for sale	299,075	284,090
Securities held to maturity	3,024	3,139
Accrued interest receivable	3,759	3,684
Recurring
Financial assets:
Securities available for sale	299,075	284,090
Derivative Asset	16,343	6,466
Financial liabilities:
Derivative Liabilities	16,773	6,831
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and due from financial institutions	27,522	25,203
Interest-earning deposits in other financial institutions	116,936	96,701
Equity investments	1,999	2,174
Securities available for sale	0	0
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Accrued interest receivable	39	63
Derivative Asset	0	0
Financial liabilities:
Demand, savings, and insured money market accounts	1,441,841	1,410,962
Time deposits	0	0
Accrued interest payable	11	27
Derivative Liabilities	0	0
Recurring | 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	299,075	284,090
Securities held to maturity	2,093	2,094
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Accrued interest receivable	988	885
Derivative Asset	16,343	6,466
Financial liabilities:
Demand, savings, and insured money market accounts	0	0
Time deposits	170	163,761
Accrued interest payable	282	272
Derivative Liabilities	16,343	6,466
Recurring | 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	0	0
Securities held to maturity	931	1,045
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	1,298	1,285,215
Accrued interest receivable	3,759	3,685
Derivative Asset	0	0
Financial liabilities:
Demand, savings, and insured money market accounts	0	0
Time deposits	0	0
Accrued interest payable	0	0
Derivative Liabilities	430	365
Recurring | Carrying Amount
Financial assets:
Cash and due from financial institutions	27,522	25,203
Interest-earning deposits in other financial institutions	116,936	96,701
Equity investments	1,999	2,174
Securities available for sale		284,090
Securities held to maturity	3,001	3,115
FHLBNY and FRBNY stock	3,099	3,099
Loans, net and loans held for sale	1,295,029	1,286,926
Accrued interest receivable	4,786	4,633
Derivative Asset	16,343	6,466
Financial liabilities:
Demand, savings, and insured money market accounts	1,441,841	1,410,962
Time deposits	166,262	161,176
Accrued interest payable	293	299
Derivative Liabilities	16,773	6,831
Recurring | Estimated Fair Value
Financial assets:
Cash and due from financial institutions	27,522	25,203
Interest-earning deposits in other financial institutions	116,936	96,701
Equity investments	1,999	2,174
Securities available for sale		284,090
Securities held to maturity	3,024	3,139
Loans, net and loans held for sale	1,298	1,285,215
Accrued interest receivable	4,786	4,633
Derivative Asset	16,343	6,466
Financial liabilities:
Demand, savings, and insured money market accounts	1,441,841	1,410,962
Time deposits	170	163,761
Accrued interest payable	293	299
Derivative Liabilities	$ 16,773	$ 6,831

X

- Definition

The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice. Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank and Federal Home Loan Bank (FHLB) stock represents an equity interest in in a FHLB. They do not have a readily determinable fair values because ownership is restricted and it lacks a market (liquidity).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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