Revenue Concentrations, Significant Customers And Geographic Areas

3 Months Ended

Mar. 31, 2021

Revenue Concentrations, Significant Customers And Geographic Areas

11. REVENUE CONCENTRATIONS, SIGNIFICANT CUSTOMERS AND GEOGRAPHIC AREAS:

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

In the three months ended March 31, 2021, sales to significant customer A accounted for 22% of our total revenues. As of March 31, 2021, accounts receivable from significant customer A were $3.0 million.

Export revenues as a percentage of total revenues were 82% in the three months ended March 31, 2021 and 72% in the three months ended March 31, 2020. Export revenues are attributed to the country where the product is shipped. Substantially all of our export revenues are negotiated, invoiced and paid in U.S. dollars. Export revenues by geographic area are summarized as follows:

	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