FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Financial assets:
Debt securities available for sale	$ 266,096		$ 234,942
Securities held to maturity	2,827		3,712
Equity investments	2,313		2,224
Other investments
Other Investments	11,597		21,437
FRB Stock	7,400		7,300
FHLB Stock	2,700		8,100
SBA Loan Fund		$ 5,000
Financial liabilities:
Noninterest-bearing demand deposits	1,715,042		1,090,479
Time deposits	92,062
Federal Home Loan Bank of New York advances	0		144,000
Carrying Amount
Financial assets:
Cash and due from banks	8,692		8,116
Overnight deposits	855,613		381,104
Debt securities available for sale	266,096		234,942
Securities held to maturity	2,760		3,722
Equity investments	2,313		2,224
Loans, net	3,101,646		2,646,677
Other investments
FRB Stock	7,381		7,317
FHLB Stock	2,718		8,122
SBA Loan Fund			5,000
Disability Fund	1,000		500
CRA - CD	498		498
Accrued interest receivable	13,249		8,862
Financial liabilities:
Noninterest-bearing demand deposits	1,715,042		1,090,479
Money market and savings deposits	2,011,409		1,589,920
Time deposits	92,062		110,375
Federal Home Loan Bank of New York advances			144,000
Trust preferred securities payable	20,620		20,620
Subordinated debt, net of issuance cost	24,657		24,601
Accrued interest payable	712		1,229
Secured Borrowings	36,964		42,972
Total Fair Value
Financial assets:
Cash and due from banks	8,692		8,116
Overnight deposits	855,613		381,104
Debt securities available for sale	266,096		234,942
Securities held to maturity	2,827		3,712
Equity investments	2,313		2,224
Loans, net	3,094,998		2,609,233
Other investments
Disability Fund	1,000		500
CRA - CD	498		498
Accrued interest receivable	13,249		8,862
Financial liabilities:
Noninterest-bearing demand deposits	1,715,042		1,090,479
Money market and savings deposits	2,011,409		1,589,920
Time deposits	93,157		110,800
Federal Home Loan Bank of New York advances			144,229
Trust preferred securities payable	20,001		20,011
Subordinated debt, net of issuance cost	25,375		25,375
Accrued interest payable	712		1,229
Secured Borrowings	36,964		42,972
Interest Rate Cap [Member] | Carrying Amount
Other investments
Derivative Asset	770
Interest Rate Cap [Member] | Total Fair Value
Other investments
Derivative Asset	770
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	8,692		8,116
Overnight deposits	855,613		381,104
Equity investments	2,313		2,224
Other investments
CRA - CD	498		498
Financial liabilities:
Noninterest-bearing demand deposits	1,715,042		1,090,479
Money market and savings deposits	2,011,409		1,589,920
Accrued interest payable	7		14
Fair Value, Inputs, Level 2
Financial assets:
Debt securities available for sale	266,096		234,942
Securities held to maturity	2,827		3,712
Other investments
Disability Fund	1,000		500
Accrued interest receivable	414		544
Financial liabilities:
Money market and savings deposits	0
Time deposits	93,157		110,800
Federal Home Loan Bank of New York advances			144,229
Subordinated debt, net of issuance cost	25,375		25,375
Accrued interest payable	591		1,009
Secured Borrowings	36,964		42,972
Fair Value, Inputs, Level 2 | Interest Rate Cap [Member]
Other investments
Derivative Asset	770
Fair Value, Inputs, Level 3
Financial assets:
Loans, net	3,094,998		2,609,233
Other investments
Accrued interest receivable	12,835		8,318
Financial liabilities:
Money market and savings deposits	0
Trust preferred securities payable	20,001		20,011
Accrued interest payable	$ 114		$ 206