Note 12 - Income Taxes - Components of Temporary Difference (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Research and Development	$ 642,000	$ 760,000
Non-capital losses available for future periods	24,777,000	24,787,000
Foreign Tax Jurisdiction [Member] | Canada Revenue Agency [Member]
Operatinting loss	17,766,000	18,610,000
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member]
Operatinting loss	$ 7,011,000	$ 5,350,000