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Geographic Assets - Composition of Long-Lived Asset (Details) - USD ($) $ in Thousands | Sep. 26, 2025 | Dec. 27, 2024
--- | --- | ---
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property, plant and equipment, net | $ 72,605 | $ 84,889
Finance lease right-of-use assets, net | 0 | 37
Operating lease right-of-use assets, net | 31,339 | 36,850
Total | 103,944 | 121,776
UNITED STATES |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property, plant and equipment, net | 54,948 | 68,318
Finance lease right-of-use assets, net |  | 37
Operating lease right-of-use assets, net | 22,420 | 27,754
Total | 77,368 | 96,109
SWITZERLAND |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property, plant and equipment, net | 17,213 | 16,084
Operating lease right-of-use assets, net | 5,633 | 6,414
Total | 22,846 | 22,498
Other [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property, plant and equipment, net | 444 | 487
Operating lease right-of-use assets, net | 3,286 | 2,682
Total | $ 3,730 | $ 3,169

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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 360 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478451/942-360-50-1 + Details
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