Note 11 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Provision for federal income taxes - current	$ 299,492	$ 152,350	$ 771,532	$ 317,128
Provision for state income taxes - current	0	0	225	250
Provision for (benefit from) federal income taxes – deferred	(68,691)	8,091	(51,263)	158,544
Total provision for income taxes	$ 230,801	$ 160,441	$ 720,494	$ 475,922