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Organization (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 29, 2026 | Mar. 30, 2025 | Dec. 28, 2025 | Dec. 29, 2024
Organization [Line Items] |  |  |  |
Incorporation date | Feb. 22, 2010 |  | Feb. 22, 2010 |
Operating loss | $ (19,195) | $ (3,726) | $ (26,931) | $ (68,509)
Accumulated deficit | (451,483) |  | (456,733) | (411,379)
Total debt |  |  | 24,300 |
Cash and cash equivalents excluding restricted cash | 9,488 |  | 9,617 | 13,378
Net loss from discontinued operations |  |  | (1,100) | (2,007)
Loss from continuing operations |  |  | $ (44,254) | $ (54,444)
Short-Term Debt [Member] |  |  |  |
Organization [Line Items] |  |  |  |
Total debt | $ 38,000 |  |  |

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