Segment Reporting and Geographic Information - (Tables)

3 Months Ended

Apr. 02, 2022

Segment Reporting [Abstract]

Schedule of Revenue from External Customers by Products and Services

The following table lists the different sources of revenue:

	Three Months Ended
	April 2,				March 27,
	2022				2021
Systems and software	$	209,383	87	%	$	141,509	84	%
Parts		19,857	8	%		17,418	10	%
Services		12,110	5	%		10,352	6	%
Total revenue	$	241,350	100	%	$	169,279	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
	April 2,		March 27,
	2022		2021
Revenue from third parties:
China	$	63,394	$	25,779
South Korea		61,135		50,530
Taiwan		53,392		36,293
United States		26,801		25,480
Europe		18,428		17,385
Southeast Asia		9,225		5,947
Japan		8,975		7,865
Total revenue	$	241,350	$	169,279

Schedule of Revenue by Major Customer by Reporting Segments

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

	Three Months Ended
	April 2,			March 27,
	2022			2021
SK Hynix Inc.		19	%		12	%
Taiwan Semiconductor Manufacturing Co. Ltd.		16	%		13	%
Samsung Semiconductor		10	%		25	%