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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 |  |

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