Note 5 - Warrant Liability - Schedule of Derivative Liabilities and Fair Value (Details) - Common Share Purchase Warrants [Member] - Derivative Financial Instruments, Liabilities [Member] $ in Thousands	9 Months Ended
Sep. 30, 2025 USD ($)
Balance	$ 1
Change in fair value of warrant derivative liability	(1)
Balance	$ 0

Note 5 - Warrant Liability - Schedule of Derivative Liabilities and Fair Value (Details) - Common Share Purchase Warrants [Member] - Derivative Financial Instruments, Liabilities [Member]
$ in Thousands

9 Months Ended

Sep. 30, 2025

USD ($)

Balance

$ 1

Change in fair value of warrant derivative liability

(1)

Balance

$ 0