Revenue Concentrations, Significant Customers And Geographic Areas (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Summary Of Revenue By Product Line

The following summarizes our revenue by product line:  

	Three Months Ended March 31,
(In thousands)	2020		2019
High Precision 3D and 2D Sensors	$	4,122	$	3,749
Inspection and Metrology Systems		8,361		7,091
Semiconductor Sensors		3,946		4,136
Total	$	16,429	$	14,976

Schedule of Sales By Geographic Area

	Three Months Ended March 31,
(In thousands)	2020		2019
Americas	$	401	$	371
Europe		2,103		2,658
China		3,880		2,775
Taiwan		1,716		2,144
Other Asia		3,680		2,613
Other		—		44
Total export sales	$	11,780	$	10,605