Segment Reporting and Geographic Information - (Tables)

12 Months Ended

Dec. 28, 2024

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 28, 2024				December 30, 2023				December 31, 2022
	(in thousands, except for percentages)
Systems and software	$	850,443	86	%	$	683,316	84	%	$	865,707	86	%
Parts		76,584	8	%		74,604	9	%		84,266	8	%
Services		60,294	6	%		57,948	7	%		55,210	6	%
Total revenue	$	987,321	100	%	$	815,868	100	%	$	1,005,183	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 28, 2024		December 30, 2023		December 31, 2022
	(in thousands)
Revenue from third parties:
Taiwan	$	307,538	$	141,915	$	199,104
South Korea		285,695		169,323		224,172
China		116,387		136,940		250,968
United States		104,109		130,292		121,487
Southeast Asia		64,912		87,585		71,062
Japan		56,999		93,831		58,133
Europe		51,681		55,982		80,256
Total revenue	$	987,321	$	815,868	$	1,005,183

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The table below presents the Company’s consolidated operating results including significant segment expenses:

	Year Ended
	December 28, 2024			December 30, 2023			December 31, 2022
	(in thousands)
Revenue	$	987,321		$	815,868		$	1,005,183
Less:
Restructuring expenses (1)		23,077			10,599			—
Merger and acquisitions related expenses (2)		7,652			2,607			5,761
Litigation expenses (3)		27			11,337			3,935
Cost of revenue (excluding 1 & 2)		457,855			388,429			465,883
Research and development (excluding 1 & 2)		109,572			103,656			105,648
Sales and marketing (excluding 1 & 2)		75,911			61,604			65,558
General and administrative (excluding 1, 2 & 3)		76,687			66,736			66,400
Amortization		49,437			54,822			55,284
Operating income		187,103			116,078			236,714
Interest income, net		33,489			20,356			5,011
Other expense, net		(145	)		(3,852	)		(141	)
Provision for income taxes		18,777			11,423			18,250
Net income	$	201,670		$	121,159		$	223,334

Schedule of Revenue by Major Customer by Reporting Segments

The following customers represented 10% or more of the Company’s total revenue for the respective years:

	Year Ended
Customer	December 28, 2024			December 30, 2023	December 31, 2022
Customer A		23	%	14 %	15 %
Customer B		17	%	19 %	13 %
Customer C		12	%	^	11 %
^ Total customer revenue was less than 10% of total revenue.

Two customers’ net accounts receivable balances were individually greater than 10% of net accounts receivable at December 28, 2024,