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Note 2 - Summary of Significant Accounting Policies (Details Textual) - shares
6 Months Ended 12 Months Ended 24 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2,496,585 1,027,084 1,731,391 1,029,529
Maximum [Member]        
Property, Plant and Equipment, Useful Life (Year)     5 years