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Segments and Geographic Information
 12 Months Ended
Dec. 30, 2023
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 2023
Probe CardsSystemsCorporate and OtherTotal
Revenues$497,903 $165,199 $— $663,102 
Gross profit185,392 84,735 (11,547)258,580 
Gross margin37.2 %51.3 %39.0 %
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 %

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 stock-based compensation expense, intangible assets, acquisition-related costs, including charges related to inventory and fixed assets stepped up to fair value, restructuring charges, 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 30, 2023December 31, 2022December 25, 2021
United States25.9 %17.1 %15.9 %
Taiwan22.3 22.7 24.2 
South Korea17.8 14.9 16.0 
China13.8 21.5 21.2 
Europe5.9 5.2 5.7 
Japan5.5 5.1 4.7 
Malaysia4.0 6.7 6.4 
Singapore2.8 5.3 4.7 
Rest of World2.0 1.5 1.2 
Total Revenues100.0 %100.0 %100.0 %

The following table summarizes revenue by market (in thousands):
 Fiscal Year Ended
 December 30, 2023December 31, 2022December 25, 2021
Foundry & Logic$363,539 $409,196 $435,812 
DRAM113,779 133,446 156,049 
Flash20,585 48,780 41,420 
Systems165,199 156,515 136,393 
Total revenues$663,102 $747,937 $769,674 

The following table summarizes revenue by timing of revenue recognition (in thousands):
Fiscal Year Ended
December 30, 2023December 31, 2022December 25, 2021
Probe CardsSystemsTotalProbe CardsSystemsTotalProbe CardsSystemsTotal
Products transferred at a point in time$494,624 $155,145 $649,769 $587,738 $144,456 $732,194 $630,038 $124,788 $754,826 
Services transferred over time3,279 10,054 13,333 3,684 12,059 15,743 3,243 11,605 14,848 
Total$497,903 $165,199 $663,102 $591,422 $156,515 $747,937 $633,281 $136,393 $769,674 

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 30, 2023December 31, 2022December 25, 2021
United States$414,607 $406,529 $372,338 
Europe23,204 42,640 47,700 
Asia-Pacific11,135 10,236 10,368 
Total$448,946 $459,405 $430,406