Note 9 - Significant Customers, Concentration of Credit Risk, and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

	Three Months Ended September 30,										Nine Months Ended September 30,
	2019					2018					2019					2018
Revenue – geographic activity (in thousands):	(unaudited)					(unaudited)					(unaudited)					(unaudited)
		$	%				$	%				$	%				$	%
North America	$	2,267		61.2	%	$	1,723		54.6	%	$	6,184		61.9	%	$	5,082		54.5	%
Europe		418		11.3	%		545		17.3	%		1,195		11.9	%		1,427		15.3	%
Asia Pacific		1,016		27.4	%		883		28.0	%		2,576		25.8	%		2,769		29.7	%
Other		2		0.1	%		3		0.1	%		43		0.4	%		42		0.5	%
	$	3,703		100.0	%	$	3,154		100.0	%	$	9,998		100.0	%	$	9,320		100.0	%