v3.26.1
Fair Value Measurements - Schedule of Financial Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 29, 2026
Dec. 28, 2025
Dec. 29, 2024
Financial Assets      
Financial Assets $ 1,134 $ 3,841 $ 3,841
Financial Liabilities      
Financial Liabilities 110,044 132,089 102,561
Level 1 [Member]      
Financial Assets      
Financial Assets 1,134 3,841 3,841
Financial Liabilities      
Financial Liabilities 2,070 13,315 862
Level 2 [Member]      
Financial Assets      
Financial Assets
Financial Liabilities      
Financial Liabilities
Level 3 [Member]      
Financial Assets      
Financial Assets
Financial Liabilities      
Financial Liabilities 107,974 118,774 101,699
Restricted Cash [Member]      
Financial Assets      
Financial Assets 1,134 3,841 3,841
Restricted Cash [Member] | Level 1 [Member]      
Financial Assets      
Financial Assets 1,134 3,841 3,841
Restricted Cash [Member] | Level 2 [Member]      
Financial Assets      
Financial Assets
Restricted Cash [Member] | Level 3 [Member]      
Financial Assets      
Financial Assets
July 2024 Notes derivative liability [Member]      
Financial Liabilities      
Financial Liabilities 14,042 [1] 19,604 [1],[2] 13,563 [2]
July 2024 Notes derivative liability [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 14,042 [1] 19,604 [1],[2] 13,563 [2]
July 2024 Notes derivative liability – related parties [Member]      
Financial Liabilities      
Financial Liabilities 9,036 [1] 12,615 [1],[2] 21,127 [2]
July 2024 Notes derivative liability – related parties [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability – related parties [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability – related parties [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 9,036 [1] 12,615 [1],[2] 21,127 [2]
September 2024 Notes derivative liability [Member]      
Financial Liabilities      
Financial Liabilities 26,351 [1] 37,930 [1],[2] 55,474 [2]
September 2024 Notes derivative liability [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 26,351 [1] 37,930 [1],[2] 55,474 [2]
September 2024 Notes derivative liability – related parties [Member]      
Financial Liabilities      
Financial Liabilities 4,286 [1] 5,870 [1],[2] 6,958 [2]
September 2024 Notes derivative liability – related parties [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability – related parties [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability – related parties [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 4,286 [1] 5,870 [1],[2] 6,958 [2]
July 2025 Note derivative liability– related party [Member]      
Financial Liabilities      
Financial Liabilities [1] 2,239 3,246 [2]  
July 2025 Note derivative liability– related party [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1] [2]  
July 2025 Note derivative liability– related party [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1] [2]  
July 2025 Note derivative liability– related party [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities [1] 2,239 3,246 [2]  
September 2025 Notes derivative liability [Member]      
Financial Liabilities      
Financial Liabilities [1] 10,825    
September 2025 Notes derivative liability [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1]    
September 2025 Notes derivative liability [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1]    
September 2025 Notes derivative liability [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities [1] 10,825    
November 2025 Note derivative liability – related party [Member]      
Financial Liabilities      
Financial Liabilities [1] 1,069    
November 2025 Note derivative liability – related party [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1]    
November 2025 Note derivative liability – related party [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1]    
November 2025 Note derivative liability – related party [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities [1] 1,069    
January 2026 Note derivative liability – related party [Member]      
Financial Liabilities      
Financial Liabilities 1,467    
January 2026 Note derivative liability – related party [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 1,467    
$1.9 Million Note [Member]      
Financial Liabilities      
Financial Liabilities 1,530    
$1.9 Million Note [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 1,530    
March 2026 Bridge Note [Member]      
Financial Liabilities      
Financial Liabilities 9,500    
March 2026 Bridge Note [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 9,500    
Forward purchase agreement liabilities [Member]      
Financial Liabilities      
Financial Liabilities 5,107 3,965 3,494 [3]
Forward purchase agreement liabilities [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [3]
Forward purchase agreement liabilities [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [3]
Forward purchase agreement liabilities [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 5,107 3,965 3,494 [3]
SAFE Agreement with related party [Member]      
Financial Liabilities      
Financial Liabilities 579 535 384
SAFE Agreement with related party [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities
SAFE Agreement with related party [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities
SAFE Agreement with related party [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 579 535 384
Private placement warrants [Member]      
Financial Liabilities      
Financial Liabilities 1,504 1,692 627
Private placement warrants [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities
Private placement warrants [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities
Private placement warrants [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 1,504 1,692 627
Working capital warrants [Member]      
Financial Liabilities      
Financial Liabilities 172 194 72
Working capital warrants [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities
Working capital warrants [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities
Working capital warrants [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 172 194 72
Public warrants [Member]      
Financial Liabilities      
Financial Liabilities 2,070 2,475 862
Public warrants [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities 2,070 2,475 862
Public warrants [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities
Public warrants [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities
Deferred Sunder Consideration Shares [Member]      
Financial Liabilities      
Financial Liabilities 6,331 10,840  
Deferred Sunder Consideration Shares [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities 10,840  
Deferred Sunder Consideration Shares [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities  
Deferred Sunder Consideration Shares [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities 6,331  
Deferred Ambia Consideration Shares [Member]      
Financial Liabilities      
Financial Liabilities 13,936 16,879  
Deferred Ambia Consideration Shares [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities  
Deferred Ambia Consideration Shares [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities  
Deferred Ambia Consideration Shares [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities $ 13,936 16,879  
September 2025 Notes derivative liability [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]   14,756  
September 2025 Notes derivative liability [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]    
September 2025 Notes derivative liability [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]    
September 2025 Notes derivative liability [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]   14,756  
November 2025 Note derivative liability – related party [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]   1,488  
November 2025 Note derivative liability – related party [Member] | Level 1 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]    
November 2025 Note derivative liability – related party [Member] | Level 2 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]    
November 2025 Note derivative liability – related party [Member] | Level 3 [Member]      
Financial Liabilities      
Financial Liabilities [1],[2]   $ 1,488  
[1] The derivative liabilities are associated with the Company’s outstanding senior unsecured convertible notes with stated interest rates of 7.0% (the “September 2024 Notes” and “September 2025 Notes”) and 12.0% (the “July 2024 Notes”, “July 2025 Note”, “November 2025 Note” and “January 2026 Note”) all of which are defined in Note 9 – Borrowings and Derivative Liabilities.
[2] The derivative liabilities are associated with the Company’s outstanding senior unsecured convertible notes with stated interest rates of 7.0% (the “September 2024 Notes” and “September 2025 Notes”) and 12.0% (the “July 2024 Notes”, “July 2025 Note”, and “November 2025 Note”) all of which are defined in Note 10 – Borrowings and Derivative Liabilities.
[3] Includes $1.3 million due to related parties as of and December 29, 2024.