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Note 4 - Debts and Commitments - Future Obligations (Details)
Sep. 30, 2022
USD ($)
Payments due by Fiscal Year One $ 140,000
Payments due by Fiscal Year Two 3,000
Payments due by Fiscal Year Total 143,000
Payments due by Fiscal Year One 286,000
Payments due by Fiscal Year Two 1,979,000
Payments due by Fiscal Year Three 884,000
Payments due by Fiscal Year Four 785,000
Payments due by Fiscal Year Five 683,000
Payments due by Fiscal Year After Year Five 1,482,000
Payments due by Fiscal Year Total 6,099,000
Real Estate Loan [Member]  
Payments due by Fiscal Year One 146,000
Payments due by Fiscal Year Two 158,000
Payments due by Fiscal Year Three 164,000
Payments due by Fiscal Year Four 169,000
Payments due by Fiscal Year Five 175,000
Payments due by Fiscal Year After Year Five 619,000
Payments due by Fiscal Year Total 1,431,000
Long Term Accrued Liabilities [Member]  
Payments due by Fiscal Year Two 1,818,000
Payments due by Fiscal Year Three 720,000
Payments due by Fiscal Year Four 616,000
Payments due by Fiscal Year Five 508,000
Payments due by Fiscal Year After Year Five 863,000
Payments due by Fiscal Year Total $ 4,525,000