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Accounts Receivable and Contract Assets, Net (Narrative) (Details) - USD ($) $ in Thousands | Mar. 27, 2026 | Dec. 26, 2025 | Dec. 27, 2024
--- | --- | --- | ---
Receivables [Line Items] |  |  |
Accounts receivable | $ 36,132 | $ 32,433 | $ 35,900
Contract assets (unbilled revenue) | 35,710 | 28,993 | $ 23,500
Software Development [Member] |  |  |
Receivables [Line Items] |  |  |
Unbilled accounts receivable | $ 16,700 | $ 11,900 |

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