Segment Reporting and Geographic Information

12 Months Ended

Dec. 26, 2020

Segment Reporting [Abstract]

Segment Reporting and Geographic Information

15. Segment Reporting and Geographic Information:

The Company is engaged in the design, development, manufacture and support of high-performance control metrology, defect inspection, 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, 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 26,				Year Ended December 31,
	2020				2019				2018
Systems and software	$	450,459	80	%	$	255,723	84	%	$	234,241	86	%
Parts		65,444	12	%		34,892	11	%		28,658	10	%
Services		40,593	8	%		15,281	5	%		10,885	4	%
Total revenue	$	556,496	100	%	$	305,896	100	%	$	273,784	100	%

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

	Year Ended December 26,		Year Ended December 31,
	2020		2019		2018
Revenue from third parties:
China	$	125,023	$	80,017	$	63,243
Taiwan		120,959		66,601		45,312
South Korea		90,193		43,997		51,750
United States		81,708		46,717		43,944
Japan		59,295		29,816		22,361
Europe		49,697		23,023		27,173
Southeast Asia		29,621		15,725		20,001
Total revenue	$	556,496	$	305,896	$	273,784

The following chart identifies our customers that represented 10% or more of total revenue for each of the last three fiscal years:

	2020			2019			2018
Samsung Semiconductor		15	%	^			^
Taiwan Semiconductor Manufacturing Co. Ltd.		14	%		13	%	^
SK Hynix Inc.	^				13	%		12	%

^ The customer accounted for less than 10% of total revenue during the period.

At December 26, 2020, three customers, Samsung Semiconductor, Taiwan Semiconductor Manufacturing Co. Ltd., and SK Hynix Inc., accounted for more than 10% of net accounts receivable. At December 31, 2019, one customer, Taiwan Semiconductor Manufacturing Co. Ltd., 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.