Note 12 - Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income taxes at U.S. statutory rate	$ (379,000)	$ (52,000)
State income taxes, net of federal benefit	7,000	11,000
Higher/(lower) effective taxes on earnings/losses in foreign countries	38,000	(65,000)
Foreign corporate income taxes	97,000	33,000
Foreign tax credit carryover		(66,000)
Life insurance settlement	118,000
GILTI	34,000
Nondeductible meals and entertainment expense	9,000	13,000
Valuation allowance, net	186,000	707,000
Other	(12,000)	(36,000)
	$ 98,000	$ 545,000