FAIR VALUE - Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financial Assets [Abstract]
Cash and due from financial institutions	$ 27,233	$ 24,886
Interest-bearing deposits in other financial institutions	80,121	1,299
Securities available for sale	300,277	344,820
Securities held to maturity	3,793	4,822
Loans, net	1,186,488	1,154,373
Accrued interest receivable	2,964	2,870
Financial liabilities [Abstract]
Securities sold under agreements to repurchase	28,778	28,453
FHLBNY overnight advances	0	13,900
FHLBNY term advances	19,148	19,203
Recurring [Member]
Financial Assets [Abstract]
Securities available for sale	300,277	344,820
Securities held to maturity	3,793
Derivative assets	437	15
Financial liabilities [Abstract]
Derivative liabilities	557	63
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets [Abstract]
Cash and due from financial institutions	27,233	24,886
Interest-bearing deposits in other financial institutions	80,121	1,299
Trading assets	767	701
Securities available for sale	52	14,840
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net	0	0
Loans held for sale	0	0
Accrued interest receivable	0	39
Derivative assets	0	0
Financial liabilities [Abstract]
Demand, savings, and insured money market accounts	1,309,265	1,234,216
Time deposits	0	0
Securities sold under agreements to repurchase	0	0
FHLBNY overnight advances		0
FHLBNY term advances	0	0
Accrued interest payable	21	17
Derivative liabilities	0	0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Assets [Abstract]
Cash and due from financial institutions	0	0
Interest-bearing deposits in other financial institutions	0	0
Trading assets	0	0
Securities available for sale	299,969	329,732
Securities held to maturity	0	0
FHLBNY and FRBNY stock	0	0
Loans, net	0	0
Loans held for sale	843	1,076
Accrued interest receivable	965	1,141
Derivative assets	437	15
Financial liabilities [Abstract]
Demand, savings, and insured money market accounts	0	0
Time deposits	159,084	166,551
Securities sold under agreements to repurchase	29,459	29,128
FHLBNY overnight advances		13,901
FHLBNY term advances	19,564	19,658
Accrued interest payable	192	192
Derivative liabilities	437	15
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Assets [Abstract]
Cash and due from financial institutions	0	0
Interest-bearing deposits in other financial institutions	0	0
Trading assets	0	0
Securities available for sale	256	248
Securities held to maturity		4,822
FHLBNY and FRBNY stock	0	0
Loans, net	1,209,140	1,178,081
Loans held for sale	0	0
Accrued interest receivable	2,939	2,835
Derivative assets	0	0
Financial liabilities [Abstract]
Demand, savings, and insured money market accounts	0	0
Time deposits	0	0
Securities sold under agreements to repurchase	0	0
FHLBNY overnight advances		0
FHLBNY term advances	0	0
Accrued interest payable	0	0
Derivative liabilities	120	48
Recurring [Member] | Carrying Amount [Member]
Financial Assets [Abstract]
Cash and due from financial institutions	27,233	24,886
Interest-bearing deposits in other financial institutions	80,121	1,299
Trading assets	767	701
Securities available for sale	300,277	344,820
Securities held to maturity	3,518	4,566
FHLBNY and FRBNY stock	4,491	4,797
Loans, net	1,186,488	1,154,373
Loans held for sale	809	1,076
Accrued interest receivable	3,904	4,015
Derivative assets	437	15
Financial liabilities [Abstract]
Demand, savings, and insured money market accounts	1,309,265	1,234,216
Time deposits	158,655	166,079
Securities sold under agreements to repurchase	28,778	28,453
FHLBNY overnight advances		13,900
FHLBNY term advances	19,148	19,203
Accrued interest payable	213	209
Derivative liabilities	557	63
Recurring [Member] | Estimated Fair Value [Member]
Financial Assets [Abstract]
Cash and due from financial institutions	27,233	24,886
Interest-bearing deposits in other financial institutions	80,121	1,299
Trading assets	767	701
Securities available for sale	300,277	344,820
Securities held to maturity	3,793	4,822
Loans, net	1,209,140	1,178,081
Loans held for sale	843	1,076
Accrued interest receivable	3,904	4,015
Derivative assets	437	15
Financial liabilities [Abstract]
Demand, savings, and insured money market accounts	1,309,265	1,234,216
Time deposits	159,084	166,551
Securities sold under agreements to repurchase	29,459	29,128
FHLBNY overnight advances		13,901
FHLBNY term advances	19,564	19,658
Accrued interest payable	213	209
Derivative liabilities	$ 557	$ 63