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Fair Value Measurements - Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis (Details) - Fair Value, Nonrecurring [Member] - Level 3 [Member] - USD ($) $ in Thousands | Mar. 29, 2026 | Dec. 28, 2025 | Dec. 29, 2024
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Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | $ 140,816 | [1] | $ 140,266 | [1],[2] | $ 125,773 | [2]
Unamortized debt discount and debt issuance costs |  | (85,157) |  | (88,528) |  | (90,678) |
Net carrying amount excluding capitalized interest |  | 55,659 | [1] | 51,738 | [1] | 35,095 |
Fair value |  | 125,314 |  | 154,902 |  | 140,541 |
12.0% senior unsecured convertible notes - July 2024 Notes [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | 27,973 | [1] | 27,973 | [1],[2] | 17,973 | [2]
Unamortized debt discount and debt issuance costs |  | (5,655) |  | (5,832) |  | (6,205) |
Net carrying amount excluding capitalized interest |  | 22,318 | [1] | 22,141 | [1] | 11,768 |
Fair value |  | 26,724 |  | 33,165 |  | 21,390 |
12.0% senior unsecured convertible notes - Subtotal July 2024 Notes [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount | [2] |  |  | 18,000 | [1] | 45,973 |
Unamortized debt discount and debt issuance costs |  |  |  | (10,369) |  | (16,990) |
Net carrying amount excluding capitalized interest |  |  |  | 7,631 | [1] | 28,983 |
Fair value |  |  |  | 21,204 |  | 54,713 |
12.0% senior unsecured convertible notes - July 2024 Notes – related parties [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | 45,973 | [1] | 45,973 | [1],[2] | 28,000 | [2]
Unamortized debt discount and debt issuance costs |  | (15,709) |  | (16,201) |  | (10,785) |
Net carrying amount excluding capitalized interest |  | 30,264 | [1] | 29,772 | [1] | 17,215 |
Fair value |  | 43,810 |  | 54,369 |  | 33,323 |
12.0% senior unsecured convertible notes - July 2025 Note – related party [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount | [1] | 5,000 |  | 5,000 | [2] |  |
Unamortized debt discount and debt issuance costs |  | (3,481) |  | (3,557) |  |  |
Net carrying amount excluding capitalized interest | [1] | 1,519 |  | 1,443 |  |  |
Fair value |  | 4,494 |  | 5,641 |  |  |
12.0% senior unsecured convertible notes - November 2025 Note – related party [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount | [1] | 2,000 |  | 2,000 | [2] |  |
Unamortized debt discount and debt issuance costs |  | (1,483) |  | (1,509) |  |  |
Net carrying amount excluding capitalized interest | [1] | 517 |  | 491 |  |  |
Fair value |  | 1,971 |  | 2,360 |  |  |
7.0% senior unsecured convertible notes - September 2024 Notes [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | 53,793 | [1] | 56,543 | [1],[2] | 71,800 | [2]
Unamortized debt discount and debt issuance costs |  | (37,851) |  | (42,211) |  | (66,164) |
Net carrying amount excluding capitalized interest |  | 15,942 | [1] | 14,332 | [1] | 5,636 |
Fair value |  | 45,830 |  | 59,425 |  | 77,245 |
7.0% senior unsecured convertible notes - September 2024 Notes – related parties [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | 8,750 | [1] | 8,750 | [1],[2] | 8,000 | [2]
Unamortized debt discount and debt issuance costs |  | (5,946) |  | (6,404) |  | (7,524) |
Net carrying amount excluding capitalized interest |  | 2,804 | [1] | 2,346 | [1] | 476 |
Fair value |  | 7,461 |  | 8,880 |  | 8,583 |
7.0% senior unsecured convertible notes - Subtotal September 2024 Notes [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount |  | 62,543 | [1] | 65,293 | [1],[2] | 79,800 | [2]
Unamortized debt discount and debt issuance costs |  | (43,797) |  | (48,615) |  | (73,688) |
Net carrying amount excluding capitalized interest |  | 18,746 | [1] | 16,678 | [1] | 6,112 |
Fair value |  | 53,291 |  | 68,305 |  | $ 85,828 |
7.0% senior unsecured convertible notes - September 2025 Notes [Member] |  |  |  |  |  |  |
Schedule of Financial Liabilities that were not Measured at Fair Value, on a Non-Recurring Basis [Line Items] |  |  |  |  |  |  |
Principal amount | [1] | 22,000 |  | 22,000 | [2] |  |
Unamortized debt discount and debt issuance costs |  | (18,425) |  | (18,646) |  |  |
Net carrying amount excluding capitalized interest | [1] | 3,575 |  | 3,354 |  |  |
Fair value |  | $ 18,793 |  | $ 24,227 |  |  |
[1] | Excludes capitalized interest (coupon interest, default interest and failure to file interest) of $9.6 million and $10.8 million as of March 29, 2026, and December 28, 2025, respectively, included in the July 2024 Notes.
[2] | Excludes capitalized interest (coupon interest, default interest and failure to file interest) of $10.8 million and $13.6 million as of December 28, 2025 and December 29, 2024, respectively, included in the July 2024 Notes.

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