Note 7 - Fair Value Measurements (Details Textual)	Jun. 30, 2026 USD ($)	Dec. 31, 2025
Crypto Asset, Number of Units	69.78	0
Embedded Conversion Features [Member] \| Measurement Input, Share Price [Member]
Derivative Liability, Measurement Input	6.33
Embedded Conversion Features [Member] \| Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	1.10
Embedded Conversion Features [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.0425
Embedded Conversion Features [Member] \| Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input	0.85
Bitcoin [Member]
Crypto Asset, Spot Price	$ 59,007
Bitcoin [Member] \| Call Option [Member]
Crypto Asset, Spot Price	$ 59,007
Crypto Asset, Number of Units	8