Note 5 - 401(k) Savings Plan (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Defined Contribution Plan, Cost	$ 23,803	$ 31,930	$ 77,135	$ 105,848