Note 7 - Customer and Geographic Information (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2018			2017			2018			2017
A		40	%		36	%		39	%		42	%
B		10	%		15	%		*	%		10	%

Receivables by Major Customers [Table Text Block]

Customer	June 30, 2018			December 31, 2017
A		43	%		41	%
B		18	%		15	%

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

	Three Months Ended June 30,
	2018					2017
	Revenues		Percentage of Revenues			Revenues		Percentage of Revenues
United States	$	8,982		42	%	$	9,226		38	%
China		4,360		21			4,753		20
Taiwan		1,038		5			3,643		15
Rest of the world		6,739		32			6,667		27
Total revenue	$	21,119		100	%	$	24,289		100	%

	Six Months Ended June 30,
	2018					2017
	Revenues		Percentage of Revenues			Revenues		Percentage of Revenues
United States	$	19,065		41	%	$	20,860		44	%
China		9,542		21			6,440		13
Taiwan		3,173		7			7,480		15
Rest of the world		14,076		31			13,798		28
Total revenue	$	45,856		100	%	$	48,578		100	%

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

	June 30, 2018		December 31, 2017
United States	$	27,612	$	24,883
Rest of the world		483		503
Total long-lived assets, net	$	28,095	$	25,386