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Segment Information and Geographical Data (Long-Lived Assets Attributable To Geographic Area) (Details) - USD ($) $ in Thousands | Dec. 27, 2024 | Dec. 29, 2023
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Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | $ 115,531 | $ 105,990
North America [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 100,676 | 91,065
Europe (U.K., Germany and Netherlands) |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 14,247 | 14,481
Other (Australia, Canada, India and Uruguay) [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | $ 608 | $ 444

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 + Details
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