Note 11 - Income Taxes - Reconciliation of Tax Rates (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statutory tax rate	21.00%	21.00%
Effect of state taxes (net of federal benefit)	0.00%	0.00%
Rate differential on foreign earnings	3.00%	(25.00%)
Valuation allowance	(56.00%)	(4.00%)
Net operating loss	19.00%	(10.00%)
Disallowances for income tax purposes	(35.00%)	(21.00%)
Tax relating to origination or reversal of temporary differences	(1.00%)	0.00%
Income exempt for tax purposes	1.00%	13.00%
Global intangible low taxable income	1.00%	(12.00%)
Undistributed earnings	(2.00%)	(8.00%)
Foreign tax credit	(2.00%)	(7.00%)
Currency Translation Adjustment	12.00%	(3.00%)
Uncertain tax position	11.00%	5.00%
Other, net	(2.00%)	(5.00%)
Total	(30.00%)	(56.00%)