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Note 1 - Organization and Summary of Significant Accounting Policies - Prepaid Expenses and Other Current Assets (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Prepaid insurance $ 209,888 $ 265,429
Prepaid expenses - various 117,887 124,273
Prepaid taxes 0 2,534
Prepaid Expense and Other Assets, Current $ 327,775 $ 392,236