Segment Reporting and Geographic Information

12 Months Ended

Dec. 31, 2018

Segment Reporting And Geographic Information [Abstract]

Segment Reporting and Geographic Information

14. 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:

	Year Ended December 31,
	2018				2017				2016
Systems and Software:
Process control	$	190,098	70	%	$	177,177	70	%	$	146,652	63	%
Lithography		14,975	5	%		14,234	5	%		18,949	8	%
Software licensing, support and maintenance		29,168	11	%		25,473	10	%		29,795	13	%
Parts		28,658	10	%		27,143	11	%		25,343	11	%
Services		10,885	4	%		11,071	4	%		12,041	5	%
Total revenue	$	273,784	100	%	$	255,098	100	%	$	232,780	100	%

The Company’s significant operations outside the United States include sales, service and application offices in Europe and Asia. For geographical revenue reporting, revenue is attributed to the geographic location in which the product is shipped. Revenue by geographic region is as follows:

	Year Ended December 31,
	2018		2017		2016
Revenue from third parties:
United States	$	43,944	$	36,104	$	30,876
Taiwan		45,312		63,079		68,211
South Korea		51,750		44,180		15,556
Singapore		14,371		12,775		35,517
Austria		719		2,601		2,049
Japan		22,361		18,943		11,875
Germany		14,913		15,580		9,759
China		63,243		35,925		33,720
Other Europe		11,541		21,167		18,720
Other Asia		5,630		4,744		6,497
Total revenue	$	273,784	$	255,098	$	232,780

In 2018, sales to SK Hynix Inc. accounted for 12.2% of the Company’s revenue.  No individual end user customer accounted for more than 10% of the Company’s revenue in 2017 and 2016.  The Company does not have purchase contracts with any of its customers that obligate them to continue to purchase its products.

At December 31, 2018 and 2017, no individual customer accounted for more than 10% of net accounts receivable.

Substantially all of the Company’s long-lived assets are located within the United States of America.