Note 7 - Other Comprehensive Income - Accumulated Other Comprehensive Loss Balances (Details)	9 Months Ended
	Sep. 30, 2019 USD ($)
Balance	$ 6,255,729
Balance	1,792,141
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(6,050,347)
Accumulated Other Comprehensive Loss, Current period change	15,603
Balance	(6,034,744)
AOCI Attributable to Parent [Member]
Balance	(6,050,347)
Accumulated Other Comprehensive Loss, Current period change	15,603
Balance	$ (6,034,744)