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Note 4 - Debts and Commitments - Future Obligations (Details) | Sep. 30, 2020 USD ($)
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Payments due by Fiscal Year One | $ 129,000 |
Payments due by Fiscal Year Two | 11,000 |
Payments due by Fiscal Year Three | 0 |
Payments due by Fiscal Year Four | 0 |
Payments due by Fiscal Year Five | 0 |
Payments due by Fiscal Year After Year Five | 0 |
Payments due by Fiscal Year Total | 140,000 |
Payments due by Fiscal Year One | 270,000 |
Payments due by Fiscal Year Two | 593,000 |
Payments due by Fiscal Year Three | 344,000 |
Payments due by Fiscal Year Four | 373,000 |
Payments due by Fiscal Year Five | 324,000 |
Payments due by Fiscal Year After Year Five | 1,400,000 |
Payments due by Fiscal Year Total | 3,304,000 |
Real Estate Loan [Member] |  |
Payments due by Fiscal Year One | 131,000 |
Payments due by Fiscal Year Two | 148,000 |
Payments due by Fiscal Year Three | 153,000 |
Payments due by Fiscal Year Four | 158,000 |
Payments due by Fiscal Year Five | 164,000 |
Payments due by Fiscal Year After Year Five | 955,000 |
Payments due by Fiscal Year Total | 1,709,000 |
Long Term Accrued Liabilities [Member] |  |
Payments due by Fiscal Year One | 10,000 | [1]
Payments due by Fiscal Year Two | 434,000 | [1]
Payments due by Fiscal Year Three | 191,000 | [1]
Payments due by Fiscal Year Four | 215,000 | [1]
Payments due by Fiscal Year Five | 160,000 | [1]
Payments due by Fiscal Year After Year Five | 445,000 | [1]
Payments due by Fiscal Year Total | $ 1,455,000 | [1]
[1] | The long-term accrued liabilities for the Management Incentive Plan are discounted to the present value using a discount rate of 6%.

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