Note 7 - Income Taxes - Reconciliation of Income Tax Benefit (Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statutory federal income tax benefit	$ 5,404,903	$ 4,266,955
State tax benefit, net of federal taxes	856,735	793,282
Foreign tax benefit	0	0
Foreign operations tax rate differential	0	0
State rate adjustment	(7,795,184)	5,153
Nondeductible/nontaxable items	(7,709)	(260,768)
Goodwill impairment	1,654,212	605,420
NOL adjustments	(1,149,895)	(612,588)
Other	89,162	150,083
Valuation allowance increase	4,256,200	(3,075,039)
Total income tax benefit	$ 0	$ (661,658)