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NOTES PAYABLE AND FINANCING TRANSACTIONS (Details Narrative) - USD ($) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 06, 2020 | Oct. 02, 2018 | Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |  |  |
Interest expense |  |  | $ 352,000 | $ 236,000 |  |
Debt outstanding |  |  | $ 12,835,000 |  |  |
Minnesota Bank And Trust [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest expense |  | $ 30,000 |  |  |  |
Percentage of late payment fee |  |  | 5.00% |  |  |
Increased percentage of default late payment |  |  | 3.00% |  |  |
Minnesota Bank And Trust [Member] | Property Loan [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, maturity date | Nov. 01, 2030 |  |  |  |  |
Balloon payment | $ 3,100,000 |  |  |  |  |
Description of prepayment | Any prepayment of the Property Loan (other than monthly scheduled interest and principal payments), is subject to a prepayment fee equal to 4% of the principal amount prepaid for any prepayment made during the first or second year, 3% of the principal amount prepaid for any prepayment made during the third or fourth year, 2% of the principal amount prepaid for any prepayment made during the fifth or sixth year, and 1% of the principal amount prepaid for any prepayment made during the seventh or eighth year. |  |  |  |  |
Debt outstanding |  |  |  |  |  | $ 5,118,000
Minnesota Bank And Trust [Member] | Term Loan One [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount | $ 7,525,000 |  |  |  |  |
Debt instrument, maturity date | Nov. 01, 2027 |  |  |  |  |
Debt outstanding | $ 3,770,331 |  | $ 6,716,000 |  |  |
Amount borrowed for repurchase of common stock |  |  |  |  | $ 3,000,000 |
Interest rate | 3.84% |  |  |  |  |
Periodic payment of principal and interest | $ 97,000 |  |  |  |  |
Minnesota Bank And Trust [Member] | Term Loan Two [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount | $ 1,000,000 |  |  |  |  |
Debt instrument, maturity date | Nov. 01, 2027 |  |  |  |  |
Debt outstanding |  |  |  |  | $ 1,000,000 |
Interest rate | 3.84% |  |  |  |  |
Periodic payment of principal and interest | $ 15,000 |  |  |  |  |
Minnesota Bank And Trust [Member] | Revolving Loan [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount | $ 2,000,000 |  |  |  |  |
Debt instrument, maturity date | Nov. 05, 2021 |  |  |  |  |
Interest rate | 3.25% |  |  |  |  |
Property Loan [Member] | Minnesota Bank And Trust [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount | $ 5,200,000 |  |  |  |  |
Loan origination fees | $ 26,037,000 |  |  |  |  |
Loan bears interest rate | 3.55% |  |  |  |  |

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