Note 6 - Bank Acceptance Notes - Bank Acceptance Notes (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Bankers Acceptance [Member]
Balance as of beginning of period	$ 92
Received from customers	3,032	5,874
Converted to cash		(1,566)
Paid to suppliers	(2,245)	(4,216)
Foreign exchange impact	(2)
Balance as of end of period	877	92
Balance as of beginning of period	92
Balance as of end of period	$ 877	$ 92