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Accounts Receivable and Contract Assets, Net (Narrative) (Details) - USD ($)
$ in Thousands
Sep. 26, 2025
Dec. 27, 2024
Dec. 29, 2023
Receivables [Line Items]      
Contract assets (unbilled revenue) $ 26,184 $ 23,530 $ 17,500
Accounts receivable 33,539 35,926 $ 35,600
Software Development [Member]      
Receivables [Line Items]      
Unbilled accounts receivable $ 10,300 $ 7,800