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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 27, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Goodwill by reportable segment was as follows (in thousands):
|  | Probe Cards |  | Systems |  | Total
Goodwill, as of December 30, 2023 |  | $ | 178,424 |  |  | $ | 22,666 |  |  | $ | 201,090 |
Reduction - China divestiture |  | (1,055) |  |  | (62) |  |  | (1,117) |
Foreign currency translation |  | — |  |  | (802) |  |  | (802) |
Goodwill, as of December 28, 2024 |  | 177,369 |  |  | 21,802 |  |  | 199,171 |
Acquisition - Keystone |  | — |  |  | 15,050 |  |  | 15,050 |
Foreign currency translation |  | — |  |  | 1,808 |  |  | 1,808 |
Goodwill, as of December 27, 2025 |  | $ | 177,369 |  |  | $ | 38,660 |  |  | $ | 216,029 |
Schedule of Finite-lived Intangible Assets | Intangible assets were as follows (in thousands):
|  | December 27, 2025 |  | December 28, 2024
Other Intangible Assets |  | Gross |  | Accumulated Amortization |  | Net |  | Gross |  | Accumulated Amortization |  | Net
Existing developed technologies |  | $ | 169,165 |  |  | $ | 152,863 |  |  | $ | 16,302 |  |  | $ | 159,360 |  |  | $ | 149,631 |  |  | $ | 9,729 |
Trade name |  | 7,894 |  |  | 7,894 |  |  | — |  |  | 7,736 |  |  | 7,700 |  |  | 36 |
Customer relationships |  | 48,249 |  |  | 48,249 |  |  | — |  |  | 47,831 |  |  | 47,241 |  |  | 590 |
|  | $ | 225,308 |  |  | $ | 209,006 |  |  | $ | 16,302 |  |  | $ | 214,927 |  |  | $ | 204,572 |  |  | $ | 10,355 |
Schedule of Amortization Expense | Amortization expense was included in our Consolidated Statements of Income as follows (in thousands):
|  | Fiscal Year Ended
|  | December 27, 2025 |  | December 28, 2024 |  | December 30, 2023
Cost of revenues |  | $ | 1,838 |  |  | $ | 1,818 |  |  | $ | 3,081 |
Selling, general and administrative |  | 625 |  |  | 764 |  |  | 3,769 |
|  | $ | 2,463 |  |  | $ | 2,582 |  |  | $ | 6,850 |
Schedule of Remaining Estimated Amortization Expense | The estimated future amortization of definite-lived intangible assets, is as follows (in thousands):
Fiscal Year |  | Amount
2026 |  | $ | 2,604 |
2027 |  | 2,582 |
2028 |  | 2,471 |
2029 |  | 2,471 |
2030 |  | 1,899 |
Thereafter |  | 4,275 |
Total |  | $ | 16,302 |

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