Note 7 - Income Taxes - Income (Loss) from Continuing Operations (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
US operations	$ (3,030,960)	$ (3,345,925)
Foreign operations	(131,704)	(361,522)
	$ (3,162,664)	$ (3,707,447)

Amount after tax of income (loss) from continuing operations attributable to the parent.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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