Other Non-Operating Income, Net - Schedule of Other Non-Operating Income, Net (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
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| Schedule of Other Non-Operating Income, Net [Line Items] | ||||||||||
| Gain on remeasurement of derivative liabilities | [1] | $ 37,770 | $ (11,452) | $ 64,378 | $ 3,675 | |||||
| Change in fair value of forward purchase agreement liabilities | (4,167) | 1,344 | (5,309) | 1,613 | ||||||
| Change in fair value of SAFE Agreement with related party | 579 | (14) | 555 | (34) | ||||||
| Change in fair value of FACT public, private placement and working capital warrants | 1,561 | (1,952) | 2,176 | (3,044) | ||||||
| Change in fair value of Notes valued at fair value | (332) | (652) | ||||||||
| Change in fair value of Deferred Sunder Consideration with related party | 2,306 | |||||||||
| Change in fair value of Deferred Ambia Consideration | 6,054 | 8,997 | ||||||||
| Change in fair value of Deferred Cobalt Consideration | (208) | (208) | ||||||||
| Debt restructuring transaction costs | (1,440) | (1,440) | ||||||||
| Loss on extinguishment of debt | (2,494) | (2,494) | ||||||||
| Extinguishment of debt with related party | 1,700 | 1,700 | ||||||||
| Other, net | [2] | (203) | 30 | (428) | 322 | |||||
| Total Other non-operating income, net | [3] | $ 38,820 | $ (12,044) | $ 69,581 | $ 2,532 | |||||
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