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SUPPLEMENTAL FINANCIAL STATEMENT DATA - Finite-lived Intangible Assets - Gross Amounts and Accumulated Amortization (Details) - USD ($) $ in Thousands | Apr. 04, 2025 | Dec. 27, 2024
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Finite-Lived Intangible Assets |  |
Gross Amount | $ 119,953 | $ 104,469
Accumulated Amortization | 77,535 | 75,055
Backlog |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 11,303 | 8,882
Accumulated Amortization | 8,550 | 8,350
Tradename |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 20,414 | 16,123
Accumulated Amortization | 13,688 | 13,196
Non-compete agreements |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 1,613 | 1,613
Accumulated Amortization | 1,500 | 1,488
Developed technology |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 15,810 | 15,810
Accumulated Amortization | 15,450 | 15,286
Customer relationships |  |
Finite-Lived Intangible Assets |  |
Gross Amount | 70,813 | 62,041
Accumulated Amortization | $ 38,347 | $ 36,735

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