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Summary of Significant Accounting Policies (Segment Information) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 27, 2026 USD ($) | Jun. 28, 2025 USD ($) | Jun. 27, 2026 USD ($) segment | Jun. 28, 2025 USD ($)
Subsidiary or Equity Method Investee [Line Items] |  |  |  |
Number of reportable segment | segment |  |  | 1 |
Number of operating segments | segment |  |  | 1 |
Stock Based Compensation | $ 809 | $ 1,013 | $ 1,765 | $ 1,984
Single Reportable Segment |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |
Employee Compensation | 2,429 | 1,903 | 4,517 | 4,063
Stock Based Compensation | 809 | 1,013 | 1,765 | 1,984
Program Expenses | 822 | 535 | 1,308 | 1,116
Professional fees | $ 16,412 | $ 3,528 | $ 25,612 | $ 10,141

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