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Operating Segments and Enterprise-Wide Information
 6 Months Ended
Jun. 25, 2022
Segment Reporting [Abstract]  
Operating Segments and Enterprise-Wide Information Operating Segments and Enterprise-Wide InformationOur chief operating decision maker (“CODM”) is our Chief Executive Officer, who reviews operating results to make decisions about allocating resources and assessing performance for the entire company. We operate in two reportable segments consisting
of the Probe Cards segment and the Systems segment. The following table summarizes the operating results by reportable segment (dollars in thousands):
Three Months Ended
June 25, 2022June 26, 2021
Probe CardsSystemsCorporate and OtherTotalProbe CardsSystemsCorporate and OtherTotal
Revenues$167,708 $36,199 $— $203,907 $153,641 $34,435 $— $188,076 
Gross profit 78,420 18,276 (2,327)94,369 66,600 16,907 (7,224)76,283 
Gross margin46.8 %50.5 %46.3 %43.3 %49.1 %40.6 %
Six Months Ended
June 25, 2022June 26, 2021
Probe CardsSystemsCorporate and OtherTotalProbe CardsSystemsCorporate and OtherTotal
Revenues$327,691 $73,390 $— $401,081 $312,539 $62,173 $— $374,712 
Gross profit $155,622 $37,683 $(4,712)$188,593 $136,915 $30,506 $(14,432)$152,989 
Gross margin47.5 %51.3 %47.0 %43.8 %49.1 %40.8 %

Operating results provide useful information to our management for assessment of our performance and results of operations. Certain components of our operating results are utilized to determine executive compensation along with other measures.

Corporate and Other includes unallocated expenses relating to amortization of intangible assets, inventory and fixed asset fair value adjustments due to acquisitions, share-based compensation, and restructuring charges which are not used in evaluating the results of, or in allocating resources to, our reportable segments.

Certain revenue category information by reportable segment was as follows (in thousands):
Three Months Ended
June 25, 2022June 26, 2021
Probe CardsSystemsTotalProbe CardsSystemsTotal
Market:
Foundry & Logic$122,380 $— $122,380 $103,726 $— $103,726 
DRAM36,843 — 36,843 42,088 — 42,088 
Flash8,485 — 8,485 7,827 — 7,827 
Systems— 36,199 36,199 — 34,435 34,435 
Total$167,708 $36,199 $203,907 $153,641 $34,435 $188,076 
Timing of revenue recognition:
Products transferred at a point in time$166,701 $33,081 $199,782 $153,129 $30,884 $184,013 
Products and services transferred over time1,007 3,118 4,125 512 3,551 4,063 
Total$167,708 $36,199 $203,907 $153,641 $34,435 $188,076 
Geographical region:
Taiwan$45,188 $4,832 $50,020 $46,737 $5,147 $51,884 
China40,578 9,157 49,735 23,996 7,831 31,827 
United States21,539 9,703 31,242 24,174 8,476 32,650 
South Korea27,418 1,337 28,755 35,426 751 36,177 
Malaysia16,157 87 16,244 3,034 161 3,195 
Japan6,716 3,221 9,937 3,477 4,227 7,704 
Europe3,824 4,267 8,091 6,466 5,544 12,010 
Singapore5,131 1,977 7,108 8,602 1,360 9,962 
Rest of the world1,157 1,618 2,775 1,729 938 2,667 
Total$167,708 $36,199 $203,907 $153,641 $34,435 $188,076 
Six Months Ended
June 25, 2022June 26, 2021
Probe CardsSystemsTotalProbe CardsSystemsTotal
Market:
Foundry & Logic$236,501 $— $236,501 $217,136 $— $217,136 
DRAM71,280 — 71,280 75,986 — 75,986 
Flash19,910 — 19,910 19,417 — 19,417 
Systems— 73,390 73,390 — 62,173 62,173 
Total$327,691 $73,390 $401,081 $312,539 $62,173 $374,712 
Timing of revenue recognition:
Products transferred at a point in time$325,537 $68,497 $394,034 $311,605 $55,555 $367,160 
Products and services transferred over time2,154 4,893 7,047 934 6,618 7,552 
Total$327,691 $73,390 $401,081 $312,539 $62,173 $374,712 
Geographical region:
Taiwan$87,710 $15,379 $103,089 $91,471 $5,993 $97,464 
China73,369 14,765 88,134 61,827 12,625 74,452 
United States41,515 15,374 56,889 45,482 16,654 62,136 
South Korea52,299 3,957 56,256 53,427 1,835 55,262 
Malaysia37,674 769 38,443 22,922 203 23,125 
Japan11,501 7,818 19,319 8,726 8,299 17,025 
Singapore15,415 2,589 18,004 16,229 2,291 18,520 
Europe6,206 10,280 16,486 9,299 12,710 22,009 
Rest of the world2,002 2,459 4,461 3,156 1,563 4,719 
Total$327,691 $73,390 $401,081 $312,539 $62,173 $374,712