Note 7 - Fair Value of Financial Instruments - Derivative Liability Valuation Assumptions (Details) - Embedded Derivative Financial Instruments [Member]	Mar. 31, 2026	Dec. 31, 2025
Measurement Input, Expected Term [Member] \| Minimum [Member]
Embedded derivative, measurement input	0.75	0.91
Measurement Input, Expected Term [Member] \| Maximum [Member]
Embedded derivative, measurement input	1.83	1.5
Measurement Input, Price Volatility [Member]
Embedded derivative, measurement input	1.041
Measurement Input, Price Volatility [Member] \| Minimum [Member]
Embedded derivative, measurement input	1.041	1.102
Measurement Input, Price Volatility [Member] \| Maximum [Member]
Embedded derivative, measurement input		1.239
Measurement Input, Risk Free Interest Rate [Member] \| Minimum [Member]
Embedded derivative, measurement input	0.0361	0.0345
Measurement Input, Risk Free Interest Rate [Member] \| Maximum [Member]
Embedded derivative, measurement input	0.037	0.0349
Measurement Input, Expected Dividend Rate [Member] \| Minimum [Member]
Embedded derivative, measurement input	0	0
Measurement Input, Expected Dividend Rate [Member] \| Maximum [Member]
Embedded derivative, measurement input	0	0
Measurement Input, Continuous Discount Rate [Member] \| Minimum [Member]
Embedded derivative, measurement input	0.1518	0.1421
Measurement Input, Continuous Discount Rate [Member] \| Maximum [Member]
Embedded derivative, measurement input	0.1542	0.1685
Measurement Input, Discount Factor [Member] \| Minimum [Member]
Embedded derivative, measurement input	0.93	0.81
Measurement Input, Discount Factor [Member] \| Maximum [Member]
Embedded derivative, measurement input	0.97	0.96