Revenue Concentrations, Significant Customers And Geographic Areas (Tables)

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Summary Of Revenue By Product Line

The following summarizes our revenue by product line: 

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands)	2019		2018		2019		2018
High Precision 3D and 2D Sensors	$	3,170	$	5,388	$	8,923	$	15,696
Semiconductor Sensors		3,676		3,463		10,934		10,564
Inspection and Metrology Systems		5,545		7,832		22,554		20,397
Total	$	12,391	$	16,683	$	42,411	$	46,657

Schedule of Sales By Geographic Area

Export sales by geographic area are summarized below:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands)	2019		2018		2019		2018
Americas	$	418	$	355	$	994	$	568
Europe		1,926		4,093		6,189		9,360
China		2,135		2,354		8,469		7,750
Taiwan		842		794		3,986		1,635
Other Asia		4,005		3,942		10,824		13,563
Other		248		348		632		548
Total export sales	$	9,574	$	11,886	$	31,094	$	33,424