Segment Reporting and Geographic Information - (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Revenue from External Customers by Products and Services

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	%

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:

	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

Schedule of Revenue by Major Customer by Reporting Segments

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.