Note 2 - Summary of Significant Accounting Policies - Unobservable Inputs (Details)	Sep. 30, 2025	Dec. 31, 2024
Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member]
Royalties payable due to related parties	19.50%	22.50%
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Discount Rate [Member]
Trading debt securities, input	0.115
Trading debt securities, input	0.115
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Recovery Rate [Member]
Trading debt securities, input	0.60
Trading debt securities, input	0.60
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Conversion Price [Member]
Trading debt securities, input	0.67
Trading debt securities, input	0.67
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Expected Equity Volatility [Member]
Trading debt securities, input	0.90
Trading debt securities, input	0.90
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Probability of Conversion [Member]
Trading debt securities, input	0.258
Trading debt securities, input	0.258
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Probability of Payment [Member]
Trading debt securities, input	0.742
Trading debt securities, input	0.742
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Expected Term for Conversion [Member]
Trading debt securities, input	1.8
Trading debt securities, input	1.8
Valuation Technique, Probability Weighted Expected Return [Member] | Measurement Input, Expected Term for Payment [Member]
Trading debt securities, input	5
Trading debt securities, input	5