Note 5 - Long-Term Debt - Schedule of Fair Value Measurements (Details)	Jun. 30, 2026	Jun. 04, 2026	Apr. 14, 2026
Measurement Input, Expected Term [Member] \| April Convertible Note [Member]
Debt Instrument, Measurement Input	1.8		2
Measurement Input, Expected Term [Member] \| June Convertible Note [Member]
Debt Instrument, Measurement Input	1.9	2
Measurement Input, Price Volatility [Member] \| April Convertible Note [Member]
Debt Instrument, Measurement Input	0.50		0.45
Measurement Input, Price Volatility [Member] \| June Convertible Note [Member]
Debt Instrument, Measurement Input	0.475	0.45
Measurement Input, Risk Free Interest Rate [Member] \| April Convertible Note [Member]
Debt Instrument, Measurement Input	0.0402		0.0369
Measurement Input, Risk Free Interest Rate [Member] \| June Convertible Note [Member]
Debt Instrument, Measurement Input	0.0404	0.0397
Measurement Input, Credit Spread [Member] \| April Convertible Note [Member]
Debt Instrument, Measurement Input	0.097		0.0931
Measurement Input, Credit Spread [Member] \| June Convertible Note [Member]
Debt Instrument, Measurement Input	0.097	0.0946