Note 6 - Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense 2 (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Total stock-based compensation expense	$ 219,317	$ 292,744
Share-Based Payment Arrangement, Option [Member]
Total stock-based compensation expense	206,817	292,744
Share-Based Payment Arrangement, Option [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Total stock-based compensation expense	98,640	162,428
Share-Based Payment Arrangement, Option [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Total stock-based compensation expense	108,177	130,316
Restricted Stock [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Total stock-based compensation expense	$ 12,500	$ 0