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Segments and Geographic Information (Tables)

12 Months Ended

Dec. 28, 2024

Segment Reporting [Abstract]

Operating Results by Reportable Segments

The following table provides net contribution by reportable segment and includes a reconciliation to income before income taxes (dollars in thousands):

			Fiscal 2024
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	625,960					$	137,639					$	—					$	763,599
Cost of revenues			366,953						78,128						10,595						455,676
Gross profit			259,007						59,511						(10,595)						307,923
Gross margin			41.4		%				43.2		%										40.3		%
Research and development			90,463						20,617						10,858						121,938
Selling			31,462						16,082						5,994						53,538
Marketing			8,775						7,184						5,120						21,079
Net Contribution			$	128,307					$	15,628					$	(32,567)					111,368
General and administrative																					67,169
Gain on sale of business																					20,581
Operating income																					64,780
Interest income																					14,111
Interest expense																					(418)
Other income (expense), net																					939
Income before income taxes																					$	79,412

			Fiscal 2023
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	497,903					$	165,199					$	—					$	663,102
Cost of revenues			312,511						80,464						11,547						404,522
Gross profit			185,392						84,735						(11,547)						258,580
Gross margin			37.2		%				51.3		%										39.0		%
Research and development			83,104						21,487						11,174						115,765
Selling			26,912						17,026						8,581						52,519
Marketing			5,983						9,367						7,273						22,623
Net Contribution			$	69,393					$	36,855					$	(38,575)					67,673
General and administrative																					57,870
Gain on sale of business																					72,953
Operating income																					82,756
Interest income																					7,217
Interest expense																					(421)
Other income (expense), net																					(285)
Income before income taxes																					$	89,267

			Fiscal 2022
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	591,422					$	156,515					$	—					$	747,937
Cost of revenues			355,860						75,578						20,490						451,928
Gross profit			235,562						80,937						(20,490)						296,009
Gross margin			39.8		%				51.7		%										39.6		%
Research and development			82,428						17,078						9,716						109,222
Selling			29,583						14,953						13,612						58,148
Marketing			7,249						7,147						8,569						22,965
Net Contribution			$	116,302					$	41,759					$	(52,387)					105,674
General and administrative																					50,762
Operating income																					54,912
Interest income																					2,220
Interest expense																					(579)
Other income (expense), net																					1,317
Income before income taxes																					$	57,870

Summary of Revenue by Geographic Region

The following table summarizes revenue, by geographic region, as a percentage of total revenues based upon ship-to location:

			Fiscal Year Ended
			December 28, 2024						December 30, 2023						December 31, 2022
South Korea			24.2		%				17.8		%				14.9		%
United States			24.1						25.9						17.1
Taiwan			22.7						22.3						22.7
China			13.5						13.8						21.5
Europe			4.6						5.9						5.2
Japan			4.4						5.5						5.1
Singapore			2.6						2.8						5.3
Malaysia			2.4						4.0						6.7
Rest of World			1.5						2.0						1.5
Total revenues			100.0		%				100.0		%				100.0		%

Summary of Revenue by Market

The following table summarizes revenue by market (in thousands):

			Fiscal Year Ended
			December 28, 2024						December 30, 2023						December 31, 2022
Foundry & Logic			$	381,182					$	363,539					$	409,196
DRAM			227,422						113,779						133,446
Flash			17,356						20,585						48,780
Systems			137,639						165,199						156,515
Total revenues			$	763,599					$	663,102					$	747,937

Summary of Revenue by Timing of Recognition

The following table summarizes revenue by timing of revenue recognition (in thousands):

			Fiscal Year Ended
			December 28, 2024																		December 30, 2023																		December 31, 2022
			Probe Cards						Systems						Total						Probe Cards						Systems						Total						Probe Cards						Systems						Total
Products transferred at a point in time			$	620,598					$	122,181					$	742,779					$	494,624					$	155,145					$	649,769					$	587,738					$	144,456					$	732,194
Services transferred over time			5,362						15,458						20,820						3,279						10,054						13,333						3,684						12,059						15,743
Total			$	625,960					$	137,639					$	763,599					$	497,903					$	165,199					$	663,102					$	591,422					$	156,515					$	747,937

Long-lived Assets by Location

Long-lived assets, comprised of Operating lease, Right-of-use assets, Property, plant and equipment, net, Goodwill and Intangibles, net, reported based on the location of the asset was as follows (in thousands):

			December 28, 2024						December 30, 2023						December 31, 2022
United States			$	411,646					$	414,607					$	406,529
Europe			21,323						23,204						42,640
Asia-Pacific			9,366						11,135						10,236
Total			$	442,335					$	448,946					$	459,405

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