Note 10 - Customer and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	Three Months Ended March 31,
Customer	2020			2019
A		26	%		36	%

	March 31,			December 31,
Customer	2020			2019
A		17	%		27	%
B		15	%		14	%
C		14	%		12	%

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

	Three Months Ended March 31,
	2020					2019
			Percentage					Percentage
	Revenues		of Revenues			Revenues		of Revenues
United States	$	8,617		41	%	$	9,315		45	%
China		2,959		14			2,983		15
Taiwan		2,668		12			1,755		9
Rest of the world		6,914		33			6,488		31
Total revenue	$	21,158		100	%	$	20,541		100	%

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

	March 31,		December 31,
	2020		2019
United States	$	46,065	$	46,000
Rest of the world		2,312		2,407
Total long-lived assets, net	$	48,377	$	48,407