Revenue Concentrations, Significant Customers And Geographic Areas (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Summary Of Revenue By Product Line

The following summarizes our revenue by product line:  

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
High Precision 3D and 2D Sensors	$	4,745	$	2,004	$	8,867	$	5,753
Inspection and Metrology Systems		7,661		9,918		16,022		17,009
Semiconductor Sensors		3,590		3,122		7,536		7,258
Total	$	15,996	$	15,044	$	32,425	$	30,020

Schedule of Sales By Geographic Area

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
Americas	$	97	$	205	$	497	$	576
Europe		2,369		1,606		4,472		4,264
China		3,954		3,559		7,834		6,334
Taiwan		763		999		2,479		3,144
Other Asia		5,449		4,207		9,129		6,819
Other		742		339		742		384
Total export sales	$	13,374	$	10,915	$	25,153	$	21,521