Segment Reporting and Geographic Information

9 Months Ended

Sep. 30, 2018

Segment Reporting And Geographic Information [Abstract]

Segment Reporting and Geographic Information

NOTE 15. Segment Reporting and Geographic Information

The Company is engaged in the design, development, manufacture and support of high-performance control metrology, defect inspection, advanced packaging lithography and data analysis systems used by microelectronics device manufacturers. The Company and its subsidiaries currently operate in a single operating segment: the design, development, manufacture and support of high-performance process control defect inspection and metrology, advanced packaging lithography and process control software systems used by microelectronics device manufacturers.  Therefore the Company has one reportable segment.  The Company’s chief operating decision maker is the Chief Executive Officer (the “CEO”).  The CEO allocates resources and assesses performance of the business and other activities at the reportable segment level.

The following table lists the different sources of revenue:

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2018				2017				2018				2017
Systems and Software:
Process control	$	41,164	68	%	$	43,821	65	%	$	145,458	69	%	$	135,408	70	%
Lithography		2,791	5	%		7,010	11	%		14,712	7	%		10,560	5	%
Software licensing, support and maintenance		6,877	11	%		6,053	9	%		21,879	10	%		20,447	10	%
Parts		7,141	12	%		7,101	11	%		20,884	10	%		20,779	11	%
Services		2,459	4	%		2,935	4	%		8,071	4	%		7,823	4	%
Total revenue	$	60,432	100	%	$	66,920	100	%	$	211,004	100	%	$	195,017	100	%

For geographical revenue reporting, revenue is attributed to the geographic location to which the product is shipped.  Revenue by geographic region is as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Revenue from third parties:
United States	$	11,476	$	7,666	$	29,344	$	25,856
Taiwan		10,233		17,300		35,643		49,960
Japan		4,134		6,268		14,082		12,944
China		11,547		4,151		52,866		24,156
South Korea		10,977		10,852		44,581		36,099
Singapore		4,644		4,664		11,985		9,875
Other Asia		1,102		1,690		3,520		3,249
Germany		3,527		4,488		8,668		12,357
Other Europe		2,792		9,841		10,315		20,521
Total revenue	$	60,432	$	66,920	$	211,004	$	195,017

The following customer accounted for more than 10% of total revenue for the indicated periods:

	Nine Months Ended September 30,
	2018			2017
Customer A		10.5	%		8.2	%