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Note 5 - Cash and Cash Equivalents - Schedule of Cash and Cash Equivalents (Details) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Certificates of Deposit (original 3-month maturity) $ 0 $ 125,000
Money market funds 575,907 1,031,361
U.S. Treasury Bills (original 3-month maturity) 1,294,553 6,746,727
Total cash and cash equivalents 2,441,916 8,243,122
Demand Deposits [Member]    
Demand Deposits $ 571,456 $ 340,034