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SUPPLEMENTAL FINANCIAL STATEMENT DATA - Finite-lived Intangible Assets - Gross Amounts and Accumulated Amortization (Details) - USD ($) $ in Thousands | Jul. 04, 2025 | Dec. 27, 2024
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Finite-Lived Intangible Assets |  |
Gross Amount | $ 115,073 | $ 104,469
Accumulated Amortization | 80,954 | 75,055
Backlog |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 11,804 | 8,882
Accumulated Amortization | 8,924 | 8,350
Tradename |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 18,080 | 16,123
Accumulated Amortization | 14,809 | 13,196
Non-compete agreements |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 1,613 | 1,613
Accumulated Amortization | 1,512 | 1,488
Developed technology |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 15,810 | 15,810
Accumulated Amortization | 15,615 | 15,286
Customer relationships |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 67,766 | 62,041
Accumulated Amortization | $ 40,094 | $ 36,735

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