Note 3 - Valuation Allowance (Details) - Allowance for Doubtful Accounts [Member] - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Balance	$ 395	$ 1,171	$ 111,996
Additions (reductions) charged to costs and expenses	1,449	854	(106,504)
Foreign exchange gain/loss	$ (98)	(25)	(727)
Write-offs		(1,605)	(3,594)
Balance	$ 1,746	$ 395	$ 1,171