FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets:
Debt securities available for sale	$ 199,854	$ 234,942
Securities held to maturity	3,588	3,712
Other investments
Other Investments	21,455	21,437
Financial liabilities:
Noninterest-bearing demand deposits	1,250,584	1,090,479
Federal Home Loan Bank of New York advances	144,000	144,000
Carrying Amount
Financial assets:
Cash and due from banks	12,501	9,619
Overnight deposits	569,927	381,104
Debt securities available for sale	199,854	234,942
Securities held to maturity	3,520	3,722
Equity investments	2,272	2,224
Loans, net	2,735,175	2,646,677
Other investments
FRB Stock	7,335	7,317
FHLB Stock	8,122	8,122
SBA Loan Fund	5,000	5,000
Disability Fund	500	500
Time deposits at banks	498	498
Interest rate cap derivative	1,892
Accrued interest receivable	9,108	8,862
Financial liabilities:
Noninterest-bearing demand deposits	1,250,584	1,090,479
Money market and savings deposits	1,673,452	1,589,920
Time deposits	97,656	110,375
Federal Home Loan Bank of New York advances	144,000	144,000
Trust preferred securities payable	20,620	20,620
Subordinated debt, net of issuance cost	24,615	24,601
Accrued interest payable	1,146	1,229
Total Fair Value
Financial assets:
Cash and due from banks	12,501	9,619
Overnight deposits	569,927	381,104
Debt securities available for sale	199,854	234,942
Securities held to maturity	3,588	3,712
Equity investments	2,272	2,224
Loans, net	2,732,185	2,609,233
Other investments
Disability Fund	500	500
Time deposits at banks	498	498
Interest rate cap derivative	1,892
Accrued interest receivable	9,108	8,862
Financial liabilities:
Noninterest-bearing demand deposits	1,250,584	1,090,479
Money market and savings deposits	1,673,452	1,589,920
Time deposits	98,846	110,800
Federal Home Loan Bank of New York advances	144,813	144,229
Trust preferred securities payable	20,024	20,011
Subordinated debt, net of issuance cost	24,125	25,375
Accrued interest payable	1,146	1,229
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	12,501	9,619
Overnight deposits	569,927	381,104
Equity investments	2,272	2,224
Other investments
Time deposits at banks	498	498
Financial liabilities:
Noninterest-bearing demand deposits	1,250,584	1,090,479
Money market and savings deposits	1,673,452	1,589,920
Accrued interest payable	9	14
Fair Value, Inputs, Level 2
Financial assets:
Debt securities available for sale	199,854	234,942
Securities held to maturity	3,588	3,712
Other investments
Disability Fund	500	500
Interest rate cap derivative	1,892
Accrued interest receivable	503	544
Financial liabilities:
Money market and savings deposits	0
Time deposits	98,846	110,800
Federal Home Loan Bank of New York advances	144,813	144,229
Subordinated debt, net of issuance cost	24,125	25,375
Accrued interest payable	941	1,009
Fair Value, Inputs, Level 3
Financial assets:
Loans, net	2,732,185	2,609,233
Other investments
Accrued interest receivable	8,605	8,318
Financial liabilities:
Money market and savings deposits	0
Trust preferred securities payable	20,024	20,011
Accrued interest payable	$ 196	$ 206