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Segments and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Operating Results by Reportable Segments

The following table summarizes the operating results by reportable segment (dollars in thousands):

			Fiscal 2022
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	591,422					$	156,515					$	—					$	747,937
Gross profit			235,562						80,937						(20,490)						296,009
Gross margin			39.8		%				51.7		%										39.6		%

			Fiscal 2021
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	633,281					$	136,393					$	—					$	769,674
Gross profit			279,873						65,834						(22,940)						322,767
Gross margin			44.2		%				48.3		%										41.9		%

			Fiscal 2020
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	581,739					$	111,877					$	—					$	693,616
Gross profit			263,215						51,835						(27,130)						287,920
Gross margin			45.2		%				46.3		%										41.5		%

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 31, 2022						December 25, 2021						December 26, 2020
Taiwan			22.7		%				24.2		%				21.7		%
China			21.5						21.2						25.2
United States			17.1						15.9						18.4
South Korea			14.9						16.0						12.5
Malaysia			6.7						6.4						1.6
Singapore			5.3						4.7						2.4
Europe			5.2						5.7						9.5
Japan			5.1						4.7						6.3
Rest of World			1.5						1.2						2.4
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 31, 2022						December 25, 2021						December 26, 2020
Foundry & Logic			$	409,196					$	435,812					$	446,183
DRAM			133,446						156,049						109,734
Flash			48,780						41,420						25,822
Systems			156,515						136,393						111,877
Total revenues			$	747,937					$	769,674					$	693,616

Summary of Revenue by Timing of Recognition

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

			Fiscal Year Ended
			December 31, 2022																		December 25, 2021																		December 26, 2020
			Probe Cards						Systems						Total						Probe Cards						Systems						Total						Probe Cards						Systems						Total
Products transferred at a point in time			$	587,738					$	144,456					$	732,194					$	630,038					$	124,788					$	754,826					$	579,569					$	104,858					$	684,427
Services transferred over time			3,684						12,059						15,743						3,243						11,605						14,848						2,170						7,019						9,189
Total			$	591,422					$	156,515					$	747,937					$	633,281					$	136,393					$	769,674					$	581,739					$	111,877					$	693,616

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 31, 2022						December 25, 2021						December 26, 2020
United States			$	406,529					$	372,338					$	347,654
Europe			42,640						47,700						51,791
Asia-Pacific			10,236						10,368						7,322
Total			$	459,405					$	430,406					$	406,767

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