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Segments and Geographic Information
 12 Months Ended
Dec. 31, 2022
Segment Reporting [Abstract]  
Segments and Geographic Information Segments and Geographic Information
We operate in two reportable segments consisting of the Probe Cards Segment and the Systems Segment.

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.

The following table summarizes the operating results by reportable segment (dollars in thousands):
Fiscal 2022
Probe CardsSystemsCorporate and OtherTotal
Revenues$591,422 $156,515 $— $747,937 
Gross profit235,562 80,937 (20,490)296,009 
Gross margin39.8 %51.7 %39.6 %
Fiscal 2021
Probe CardsSystemsCorporate and OtherTotal
Revenues$633,281 $136,393 $— $769,674 
Gross profit279,873 65,834 (22,940)322,767 
Gross margin44.2 %48.3 %41.9 %
Fiscal 2020
Probe CardsSystemsCorporate and OtherTotal
Revenues$581,739 $111,877 $— $693,616 
Gross profit263,215 51,835 (27,130)287,920 
Gross margin45.2 %46.3 %41.5 %

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, share-based compensation expense, acquisition-related costs, including charges related to inventory and fixed assets stepped up to fair value, and other costs, which are not used in evaluating the results of, or in allocating resources to, our reportable segments. Acquisition-related costs include transaction costs and any costs directly related to the acquisition and integration of acquired businesses.
The following table summarizes revenue, by geographic region, as a percentage of total revenues based upon ship-to location:
Fiscal Year Ended
December 31, 2022December 25, 2021December 26, 2020
Taiwan22.7 %24.2 %21.7 %
China21.5 21.2 25.2 
United States17.1 15.9 18.4 
South Korea14.9 16.0 12.5 
Malaysia6.7 6.4 1.6 
Singapore5.3 4.7 2.4 
Europe5.2 5.7 9.5 
Japan5.1 4.7 6.3 
Rest of World1.5 1.2 2.4 
Total Revenues100.0 %100.0 %100.0 %

The following table summarizes revenue by market (in thousands):
 Fiscal Year Ended
 December 31, 2022December 25, 2021December 26, 2020
Foundry & Logic$409,196 $435,812 $446,183 
DRAM133,446 156,049 109,734 
Flash48,780 41,420 25,822 
Systems156,515 136,393 111,877 
Total revenues$747,937 $769,674 $693,616 

The following table summarizes revenue by timing of revenue recognition (in thousands):
Fiscal Year Ended
December 31, 2022December 25, 2021December 26, 2020
Probe CardsSystemsTotalProbe CardsSystemsTotalProbe CardsSystemsTotal
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 time3,684 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, 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, 2022December 25, 2021December 26, 2020
United States$406,529 $372,338 $347,654 
Europe42,640 47,700 51,791 
Asia-Pacific10,236 10,368 7,322 
Total$459,405 $430,406 $406,767