Note 11 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Net operating loss carryforwards	$ 20,058	$ 18,799
Tax credit carryforwards	2,387,000	2,315,000
Capitalized research and development	1,553,000	1,288,000
Stock-based compensation	2,809,000	2,504,000
Lease liabilities	80,000	13,000
Accruals & Others	7,000	0
Total deferred tax assets	26,894,000	24,919,000
Less: valuation allowance	(26,814,000)	(24,906,000)
Deferred tax assets	80,000	13,000
Operating lease assets	(80,000)	(13,000)
Total deferred tax liability	$ (80,000)	$ (13,000)