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Income Taxes - Taxes Paid (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 27, 2025 | Dec. 28, 2024 | Dec. 30, 2023
Income Tax Contingency [Line Items] |  |  |
US federal | $ 1,859 | $ 2,246 | $ 4,184
Total | 8,932 | 15,584 | 17,385
Oregon |  |  |
Income Tax Contingency [Line Items] |  |  |
Domestic state and local |  | 1,229 |
Other |  |  |
Income Tax Contingency [Line Items] |  |  |
Domestic state and local | 605 | 339 | 304
Germany - Federal |  |  |
Income Tax Contingency [Line Items] |  |  |
Foreign | 3,093 | 4,332 | 7,152
Germany - Bergisch Gladbach |  |  |
Income Tax Contingency [Line Items] |  |  |
Foreign |  |  | 1,765
Germany - Thiendorf |  |  |
Income Tax Contingency [Line Items] |  |  |
Foreign | 2,149 | 3,911 | 3,087
China |  |  |
Income Tax Contingency [Line Items] |  |  |
Foreign |  | 2,120 |
Other |  |  |
Income Tax Contingency [Line Items] |  |  |
Foreign | $ 1,226 | $ 1,407 | $ 893

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