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Note 10 - Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Computed tax at expected statutory rate	$ (2,349,899)	$ (2,157,436)
State and local income taxes, net of federal benefit	(1,387)	(76,055)
Non-US income taxed at different rates	(101,856)	(35,454)
Deferred compensation	(31,500)	(52,165)
Non-deductible expenses	1,565	2,243
Non-taxable income	0	(75,562)
Change in valuation allowance	2,209,294	1,918,579
Other	210,747	10,705
Total tax expense (benefit)	$ (63,036)	$ (465,145)

X

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deferred compensation.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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