Note 12 - Segments - Segments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenue	$ 419,646	$ 239,895
Assets	10,601,187		$ 14,417,249
Depreciation and Amortization	(162,565)	(237,854)
Net loss	(4,218,843)	(3,421,802)
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	0	0
Assets	5,012,926		8,782,034
Depreciation and Amortization	(1,851)	(1,654)
Net loss	(2,368,040)	(1,494,604)
Pittsburgh [Member] | Operating Segments [Member]
Revenue	4,858	10,627
Assets	3,135,259		3,263,270
Depreciation and Amortization	(32,097)	(111,822)
Net loss	(1,196,065)	(1,159,105)
Birmingham [Member] | Operating Segments [Member]
Revenue	11,009	13,649
Assets	840,518		981,914
Depreciation and Amortization	(120,794)	(117,600)
Net loss	(465,162)	(482,696)
Eagan [Member] | Operating Segments [Member]
Revenue	403,779	215,619
Assets	1,612,484		$ 1,390,031
Depreciation and Amortization	(7,823)	(6,778)
Net loss	$ (189,576)	$ (285,397)