Note 7 - Customer and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	Three Months Ended March 31,
Customer	2016			201 5
A		50	%		44	%
B		14	%		28	%
C		*	%		11	%

Receivables by Major Customers [Table Text Block]

Customer	March 31, 2016			December 31, 2015
A		51	%		65	%
B		10	%		*	%

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended March 31 ,
	201 6					2015
	Revenues		Percentage of Revenues			Revenues		Percentage of Revenues
United States	$	12,121		48	%	$	10,315		38	%
South Korea		3,313		13			6,918		26
Germany		3,035		12			6,264		24
Rest of the world		6,612		27			3,320		12
Total revenue	$	25,081		100	%	$	26,817		100	%

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

	March 31, 2016		December 31, 2015
United States	$	12,720	$	10,752
Rest of the world		516		573
Total long-lived assets, net	$	13,236	$	11,325