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Operating Segments and Enterprise-Wide Information (Tables)

9 Months Ended

Sep. 27, 2025

Segment Reporting [Abstract]

Schedule of Operating Results by Segment

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

			Three Months Ended
			September 27, 2025																								September 28, 2024
			Probe Cards						Systems						Corporate and Other						Total						Probe Cards						Systems						Corporate and Other						Total
Revenues			$	166,380					$	36,296					$	—					$	202,676					$	172,174					$	35,743					$	—					$	207,917
Cost of revenues			98,451						21,052						(2,547)						122,050						99,319						20,905						(2,988)						123,212
Gross profit			67,929						15,244						(2,547)						80,626						72,855						14,838						(2,988)						84,705
Gross margin			40.8		%				42.0		%										39.8		%				42.3		%				41.5		%										40.7		%
Research and development			21,785						4,404						2,497						28,686						23,259						5,166						2,818						31,243
Selling			7,621						3,445						1,552						12,618						8,198						4,363						1,443						14,004
Marketing			1,620						1,803						1,199						4,622						1,873						1,847						429						4,149
Net contribution			$	36,903					$	5,592					$	(7,795)					34,700						$	39,525					$	3,462					$	(7,678)					35,309
General and administrative																					15,731																								17,454
Factory start-up costs																					964																								—
Operating income																					18,005																								17,855
Interest income, net																					1,976																								3,650
Other income (expense), net																					444																								(558)
Income before income taxes and equity investment																					$	20,425																							$	20,947

Schedule of Disaggregation of Revenue by Segment

Certain revenue category information by reportable segment was as follows (in thousands):

			Three Months Ended
			September 27, 2025																		September 28, 2024
			Probe Cards						Systems						Total						Probe Cards						Systems						Total
Market:
Foundry & Logic			$	92,933					$	—					$	92,933					$	107,446					$	—					$	107,446
DRAM			68,182						—						68,182						60,184						—						60,184
Flash			5,265						—						5,265						4,544						—						4,544
Systems			—						36,296						36,296						—						35,743						35,743
Total			$	166,380					$	36,296					$	202,676					$	172,174					$	35,743					$	207,917
Timing of revenue recognition:
Products transferred at a point in time			$	164,573					$	33,649					$	198,222					$	166,968					$	34,292					$	201,260
Products and services transferred over time			1,807						2,647						4,454						5,206						1,451						6,657
Total			$	166,380					$	36,296					$	202,676					$	172,174					$	35,743					$	207,917
Geographical region:
South Korea			$	68,644					$	2,158					$	70,802					$	40,870					$	858					$	41,728
Taiwan			35,917						10,994						46,911						42,105						5,817						47,922
United States			26,802						9,573						36,375						45,015						10,000						55,015
China			7,760						3,905						11,665						27,367						7,146						34,513
Japan			8,406						2,979						11,385						3,734						4,322						8,056
Singapore			8,697						1,240						9,937						4,726						749						5,475
Europe			2,441						4,922						7,363						2,149						5,607						7,756
Malaysia			5,633						181						5,814						4,458						822						5,280
Rest of World			2,080						344						2,424						1,750						422						2,172
Total			$	166,380					$	36,296					$	202,676					$	172,174					$	35,743					$	207,917

			Nine Months Ended
			September 27, 2025																		September 28, 2024
			Probe Cards						Systems						Total						Probe Cards						Systems						Total
Market:
Foundry & Logic			$	277,718					$	—					$	277,718					$	297,874					$	—					$	297,874
DRAM			174,097						—						174,097						164,122						—						164,122
Flash			13,193						—						13,193						13,671						—						13,671
Systems			—						104,822						104,822						—						98,449						98,449
Total			$	465,008					$	104,822					$	569,830					$	475,667					$	98,449					$	574,116
Timing of revenue recognition:
Products transferred at a point in time			$	459,846					$	95,227					$	555,073					$	464,668					$	94,638					$	559,306
Products and services transferred over time			5,162						9,595						14,757						10,999						3,811						14,810
Total			$	465,008					$	104,822					$	569,830					$	475,667					$	98,449					$	574,116
Geographical region:
South Korea			$	166,689					$	4,413					$	171,102					$	140,233					$	1,319					$	141,552
Taiwan			123,478						21,674						145,152						109,476						13,136						122,612
United States			87,435						30,189						117,624						120,046						28,626						148,672
Japan			20,665						15,705						36,370						12,594						11,615						24,209
China			20,545						14,135						34,680						56,364						18,849						75,213
Singapore			19,057						3,808						22,865						12,354						2,401						14,755
Europe			9,200						13,192						22,392						8,927						16,493						25,420
Malaysia			13,297						272						13,569						11,150						2,595						13,745
Rest of the world			4,642						1,434						6,076						4,523						3,415						7,938
Total			$	465,008					$	104,822					$	569,830					$	475,667					$	98,449					$	574,116

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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-Topic 606
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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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