Segment Reporting and Geographic Information

12 Months Ended

Dec. 31, 2022

Segment Reporting [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, 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 31, 2022				January 1, 2022				December 26, 2020
Systems and software	$	865,707	86	%	$	669,114	85	%	$	450,459	80	%
Parts		84,266	8	%		72,753	9	%		65,444	12	%
Services		55,210	6	%		47,032	6	%		40,593	8	%
Total revenue	$	1,005,183	100	%	$	788,899	100	%	$	556,496	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 31, 2022		January 1, 2022		December 26, 2020
Revenue from third parties:
China	$	250,968	$	151,027	$	125,023
South Korea		224,172		160,373		90,193
Taiwan		199,104		194,458		120,959
United States		121,487		123,858		81,708
Europe		80,256		64,943		49,697
Japan		58,133		61,186		59,295
Southeast Asia		71,062		33,054		29,621
Total revenue	$	1,005,183	$	788,899	$	556,496

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

	2022	2021	2020
Taiwan Semiconductor Manufacturing Co. Ltd.	15 %	18 %	14 %
Samsung Semiconductor	13 %	16 %	15 %
SK Hynix Inc.	11 %	^	^
^ The customer accounted for less than 10% of total revenue during the period.

At December 31, 2022, two customers, Samsung Semiconductor and Taiwan Semiconductor Manufacturing Co. Ltd., accounted for more than 10% of net accounts receivable. At January 1, 2022, 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.