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DEBT AND OTHER FINANCING ARRANGEMENTS - Avidbank Link of Credit (Details) - USD ($)
Jan. 15, 2016
Sep. 30, 2018
Jun. 30, 2018
Term Loan      
Debt Instrument [Line Items]      
Principal amount   $ 22,708,000 $ 23,333,000
Avidbank | Line of Credit      
Debt Instrument [Line Items]      
Maximum limit of amount under line of credit $ 7,000,000.0    
Avidbank | Line of Credit | Prime Rate      
Debt Instrument [Line Items]      
Interest rate 2.00%    
Avidbank | Term Loan      
Debt Instrument [Line Items]      
Interest rate 5.00%    
Principal amount $ 3,000,000    
Avidbank | Term Loan | Prime Rate      
Debt Instrument [Line Items]      
Interest rate 1.75%    
Avidbank | Fifteenth Amendment | Line of Credit      
Debt Instrument [Line Items]      
Maximum limit of amount under line of credit $ 7,500,000