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Operating Segments and Enterprise-Wide Information
 9 Months Ended
Sep. 30, 2023
Segment Reporting [Abstract]  
Operating Segments and Enterprise-Wide Information Operating Segments and Enterprise-Wide Information
Our 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
September 30, 2023September 24, 2022
Probe CardsSystemsCorporate and OtherTotalProbe CardsSystemsCorporate and OtherTotal
Revenues$128,339 $43,236 $— $171,575 $139,365 $41,504 $— $180,869 
Gross profit 49,383 22,396 (2,494)69,285 48,252 22,284 (8,323)62,213 
Gross margin38.5 %51.8 %40.4 %34.6 %53.7 %34.4 %
Nine Months Ended
September 30, 2023September 24, 2022
Probe CardsSystemsCorporate and OtherTotalProbe CardsSystemsCorporate and OtherTotal
Revenues$370,970 $123,969 $— $494,939 $467,056 $114,894 $— $581,950 
Gross profit 135,118 64,266 (8,738)190,646 203,874 59,967 (13,035)250,806 
Gross margin36.4 %51.8 %38.5 %43.7 %52.2 %43.1 %

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, divestiture related expenses, 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
September 30, 2023September 24, 2022
Probe CardsSystemsTotalProbe CardsSystemsTotal
Market:
Foundry & Logic$96,366 $— $96,366 $90,605 $— $90,605 
DRAM27,478 — 27,478 34,922 — 34,922 
Flash4,495 — 4,495 13,838 — 13,838 
Systems— 43,236 43,236 — 41,504 41,504 
Total$128,339 $43,236 $171,575 $139,365 $41,504 $180,869 
Timing of revenue recognition:
Products transferred at a point in time$127,731 $41,776 $169,507 $138,602 $37,842 $176,444 
Products and services transferred over time608 1,460 2,068 763 3,662 4,425 
Total$128,339 $43,236 $171,575 $139,365 $41,504 $180,869 
Geographical region:
United States$31,182 $12,543 $43,725 $25,909 $12,180 $38,089 
Taiwan39,155 3,820 42,975 32,227 4,611 36,838 
South Korea31,805 3,270 35,075 28,118 819 28,937 
China10,779 10,971 21,750 27,973 8,755 36,728 
Europe2,583 6,713 9,296 3,682 8,116 11,798 
Japan2,976 3,988 6,964 4,533 3,159 7,692 
Malaysia5,778 186 5,964 6,272 237 6,509 
Singapore2,752 925 3,677 7,983 2,374 10,357 
Rest of the world1,329 820 2,149 2,668 1,253 3,921 
Total$128,339 $43,236 $171,575 $139,365 $41,504 $180,869 
Nine Months Ended
September 30, 2023September 24, 2022
Probe CardsSystemsTotalProbe CardsSystemsTotal
Market:
Foundry & Logic$279,895 $— $279,895 $327,106 $— $327,106 
DRAM77,832 — 77,832 106,202 — 106,202 
Flash13,243 — 13,243 33,748 — 33,748 
Systems— 123,969 123,969 — 114,894 114,894 
Total$370,970 $123,969 $494,939 $467,056 $114,894 $581,950 
Timing of revenue recognition:
Products transferred at a point in time$368,939 $116,981 $485,920 $464,139 $106,339 $570,478 
Products and services transferred over time2,031 6,988 9,019 2,917 8,555 11,472 
Total$370,970 $123,969 $494,939 $467,056 $114,894 $581,950 
Geographical region:
United States$86,954 $37,175 $124,129 $67,424 $27,554 $94,978 
Taiwan103,368 9,448 112,816 119,937 19,990 139,927 
South Korea77,832 5,881 83,713 80,417 4,776 85,193 
China45,771 26,586 72,357 101,342 23,520 124,862 
Europe8,424 21,114 29,538 9,888 18,396 28,284 
Japan14,014 11,859 25,873 16,034 10,977 27,011 
Malaysia22,279 1,632 23,911 43,946 1,006 44,952 
Singapore7,670 4,170 11,840 23,398 4,963 28,361 
Rest of the world4,658 6,104 10,762 4,670 3,712 8,382 
Total$370,970 $123,969 $494,939 $467,056 $114,894 $581,950