Segment Reporting and Geographic Information - (Tables)

9 Months Ended

Oct. 01, 2022

Schedule of Revenue from External Customers by Products and Services

The following table lists the different sources of revenue:

	Three Months Ended								Nine Months Ended
	October 1,				September 25,				October 1,				September 25,
	2022				2021				2022				2021
Systems and software	$	216,082	85	%	$	170,937	85	%	$	646,252	86	%	$	475,345	84	%
Parts		21,598	8	%		17,804	9	%		64,211	9	%		53,919	10	%
Services		16,573	7	%		11,848	6	%		41,450	5	%		33,991	6	%
Total revenue	$	254,253	100	%	$	200,589	100	%	$	751,913	100	%	$	563,255	100	%

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area

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
	October 1,		September 25,		October 1,		September 25,
	2022		2021		2022		2021
Revenue from third parties:
China	$	78,412	$	30,442	$	215,578	$	98,495
South Korea		41,039		29,877		171,055		121,705
Taiwan		49,611		59,258		151,460		144,052
United States		27,443		40,483		79,164		91,663
Europe		18,130		16,685		55,606		48,517
Southeast Asia		25,863		9,538		45,627		19,266
Japan		13,755		14,306		33,423		39,557
Total revenue	$	254,253	$	200,589	$	751,913	$	563,255

Schedule of Revenue by Major Customer by Reporting Segments

The following customers accounted for 10% or more of total revenue for the indicated periods:

	Nine Months Ended
	October 1,			September 25,
	2022			2021
Taiwan Semiconductor Manufacturing Co. Ltd.		15	%		18	%
SK Hynix Inc.		14	%		7	%
Yangtze Memory Technologies Co., Ltd		11	%		3	%
Samsung Semiconductor		10	%		18	%