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FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financial assets:
Cash and due from financial institutions	$ 32,622	$ 33,040
Interest-earning deposits in other financial institutions	83,838	96,932
Equity investments	2,079	1,909
Securities available for sale	269,286	242,258
Securities held to maturity	4,099	4,858
Accrued interest receivable	4,052	3,703
Recurring
Financial assets:
Equity investments	1,244	1,075
Securities available for sale	269,286	242,258
Derivative assets	6,095	3,142
Financial liabilities:
Derivative liabilities	6,460	3,282
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and due from financial institutions	32,622	33,040
Interest-earning deposits in other financial institutions	83,838	96,932
Equity investments	1,244	1,075
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	73	80
Derivative assets	0	0
Financial liabilities:
Demand, savings, and insured money market accounts	1,363,346	1,419,011
Time deposits		0
Accrued interest payable	37	26
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	269,286	242,258
Securities held to maturity	2,349	1,838
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	0	0
Accrued interest receivable	815	697
Derivative assets	6,095	3,142
Financial liabilities:
Demand, savings, and insured money market accounts	0	0
Time deposits		150,938
Accrued interest payable	277	206
Derivative liabilities	6,095	3,142
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	1,750	3,020
FHLBNY and FRBNY stock	0	0
Loans, net and loans held for sale	1,260,787	1,287,495
Accrued interest receivable	4,052	3,703
Derivative assets	0	0
Financial liabilities:
Demand, savings, and insured money market accounts	0	0
Time deposits		0
Accrued interest payable	0	0
Derivative liabilities	365	140
Recurring | Carrying Amount
Financial assets:
Cash and due from financial institutions	32,622	33,040
Interest-earning deposits in other financial institutions	83,838	96,932
Equity investments	1,244	1,075
Securities available for sale	269,286	242,258
Securities held to maturity	4,090	4,875
FHLBNY and FRBNY stock	3,091	3,138
Loans, net and loans held for sale	1,269,339	1,293,464
Accrued interest receivable	4,940	4,480
Derivative assets	6,095	3,142
Financial liabilities:
Demand, savings, and insured money market accounts	1,363,346	1,419,011
Time deposits		150,226
Accrued interest payable	314	232
Derivative liabilities	6,460	3,282
Recurring | Estimated Fair Value
Financial assets:
Cash and due from financial institutions	32,622	33,040
Interest-earning deposits in other financial institutions	83,838	96,932
Equity investments	1,244	1,075
Securities available for sale	269,286	242,258
Securities held to maturity	4,099	4,858
Loans, net and loans held for sale	1,260,787	1,287,495
Accrued interest receivable	4,940	4,480
Derivative assets	6,095	3,142
Financial liabilities:
Demand, savings, and insured money market accounts	1,363,346	1,419,011
Time deposits		150,938
Accrued interest payable	314	232
Derivative liabilities	$ 6,460	$ 3,282

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

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