Revenue Concentrations, Significant Customers, and Geographic Areas (Tables)

12 Months Ended

Dec. 31, 2019

REVENUE CONCENTRATIONS, SIGNIFICANT CUSTOMERS, AND GEOGRAPHIC AREAS [Abstract]

Summary Of Revenue By Product Line

The following summarizes our revenue by product line:

	Year Ended December 31,
(In thousands)	2019		2018
High Precision 3D and 2D Sensors	$	12,579	$	21,532
Inspection and Metrology Systems		32,713	29,582
Semiconductor Sensors		13,971	13,606
Total	$	59,263	$	64,720

Schedule Of Revenue By Geographic Area

Revenues by geographic area is summarized as follows:

	Year Ended December 31,
(In thousands)	2019		2018
United States	$	14,459	$	18,355
Netherlands		1,658	3,077
Other Europe		8,009	10,041
China		11,553	10,438
Singapore		4,120	2,948
South Korea		4,678	5,375
Japan		3,630	8,097
Other Asia		8,496	4,464
Other		2,660	1,925
Total revenues	$	59,263	$	64,720

Schedule Of Long-lived Assets Attributable To Each Geographic Area's Operations

Long-lived assets at December 31, 2019 and 2018 are as follows:

(In thousands)	2019		2018
Long-lived assets:
United States	$	3,256	$	2,867
Europe	—		2
Asia and other	395		326
Total long-lived assets	$	3,651	$	3,195