Revenue Concentrations, Significant Customers And Geographic Areas (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Summary Of Revenue By Product Line

The following summarizes our revenue by product line:

	Three Months Ended March 31,
(In thousands)	2021		2020
High Precision 3D and 2D Sensors	$	6,357	$	4,122
Inspection and Metrology Systems		6,339		8,361
Semiconductor Sensors		5,036		3,946
Total	$	17,732	$	16,429

Schedule of Sales By Geographic Area

	Three Months Ended March 31,
(In thousands)	2021		2020
Americas	$	783	$	401
Europe		3,500		2,103
China		5,163		3,880
Taiwan		730		1,716
Other Asia		4,143		3,680
Other		148		—
Total export sales	$	14,467	$	11,780