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NOTES PAYABLE AND FINANCING TRANSACTIONS (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Oct. 02, 2018
Sep. 06, 2018
Jul. 21, 2016
Jun. 30, 2020
Jun. 30, 2019
Debt Instrument [Line Items]          
Interest expense       $ 236,000 $ 220,000
Cost of equipment       $ 9,905,000 $ 9,483,000
Minnesota Bank & Trust [Member]          
Debt Instrument [Line Items]          
Debt instrument, origination fee   $ 60,000      
Percentage of late payment fee       5.00%  
Increased percentage of default late payment       3.00%  
Minnesota Bank & Trust [Member] | Business Loan Agreement ("Revolving Loan Agreement") [Member]          
Debt Instrument [Line Items]          
Debt instrument, maturity date   Nov. 06, 2020      
Debt instrument, face amount   $ 2,000,000      
Interest rate   4.50%      
Minnesota Bank & Trust [Member] | Business Loan Agreement ("Term Loan Agreement") [Member]          
Debt Instrument [Line Items]          
Debt instrument, maturity date   Oct. 01, 2025      
Debt instrument, face amount   $ 5,000,000      
Interest rate   5.53%      
Interest expense $ 18,433        
Debt instrument, periodic payment of principal and interest beginning November 1, 2018   $ 72,000      
Note payable balance       $ 3,900,000  
Jules And Associates, Inc [Member] | Master Equipment Lease Agreement [Member]          
Debt Instrument [Line Items]          
Interim rent     $ 7,388    
Cost of equipment     106,000    
Amount of payment     $ 3,121    
Duration of lease payment     36 months