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Note 1 - Summary of Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Details)	Dec. 31, 2024
Equipment [Member]
Property and equipment, estimated useful lives (Year)	3 years
Minimum [Member] \| Furniture and Fixtures [Member]
Property and equipment, estimated useful lives (Year)	5 years
Maximum [Member] \| Furniture and Fixtures [Member]
Property and equipment, estimated useful lives (Year)	7 years