Note 9 - Income Taxes - Reconciliation of Income Tax Benefit (Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statutory federal income tax benefit	$ 4,266,955	$ 5,434,463
State tax benefit, net of federal taxes	793,282	578,746
Foreign tax benefit	0	62,146
Foreign operations tax rate differential	0	(44,120)
State rate adjustment	5,153	65,112
Nondeductible/nontaxable items	(260,768)	(268,968)
Goodwill impairment	605,420	2,762,014
NOL adjustments	(612,588)	(1,141,662)
Other	150,083	(461,020)
Valuation allowance increase	(3,075,039)	(1,462,683)
Total income tax benefit	$ 661,658	$ 0