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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
bank
Jan. 01, 2019
USD ($)
Concentration Risk [Line Items]    
Number of banking offices 18  
Right-of-use assets, net | $ $ 4,734  
Lease liabilities | $ $ 4,870  
Accounting Standards Update 2016-02    
Concentration Risk [Line Items]    
Right-of-use assets, net | $   $ 2,700
Lease liabilities | $   $ 2,700
Sussex County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 7  
Bergen County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 4  
Essex County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 2  
Hudson County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 1  
Middlesex County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 1  
Union County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 1  
Warren County, New Jersey    
Concentration Risk [Line Items]    
Number of banking offices 1  
Queens County, New York    
Concentration Risk [Line Items]    
Number of banking offices 1