Note 8 - Real Estate Development - Changes to Equity Method Investments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Net Equity Investment Balance at 12/31/22	$ 6,840,285		$ 6,863,517
Net Equity Investment Balance at 12/31/22	1,304,179		3,185,923
Net Equity Investment Balance at 12/31/22	5,536,106		$ 3,677,594
Equity investment income (loss)	(23,232)
Equity investment income (loss)	1,881,744
Equity investment income (loss)	$ 1,858,512	$ (239,522)