Note 10 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Computed "expected" tax benefit (expense)	$ 592,264	$ 1,072,702
Reduction in income taxes resulting from income taxes in other tax jurisdictions	(494,697)	(1,072,270)
Other	(30)	(35)
Change in taxation rates in other jurisdictions	0
Change in exchange rates	21,016	1,190
Change in valuation allowance	(87,792)	(2,881)
	$ 30,761	$ (1,294)