v3.26.1
Business Combinations - Schedule of Provisional Fair Values of Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
Mar. 29, 2026
Dec. 28, 2025
Dec. 29, 2024
Cobalt Power Systems, Inc. [Member]      
Net assets acquired:      
Consideration transferred $ 9,664    
Cobalt Power Systems, Inc. [Member] | Customer relationships [Member]      
Net assets acquired:      
Total 18 years    
Cobalt Power Systems, Inc. [Member] | Trade name [Member]      
Net assets acquired:      
Total 10 years    
Cobalt Power Systems, Inc. [Member] | Building lease intangible asset – favorable lease [Member]      
Net assets acquired:      
Total 6 years    
Sunder Energy LLC [Member]      
Net assets acquired:      
Cash and cash equivalents $ 1,350    
Accounts receivable 1,368    
Prepaid expenses and other current assets 797    
Property and equipment, net 2,230    
Intangible assets 4,300    
Operating lease right-of-use assets 2,563    
Accounts payable (2,806)    
Accrued expenses and other current liabilities (2,917)    
Contract liabilities (1,675)    
Fair value of net assets acquired 2,564    
Fair value of common stock issued 16,493    
Fair value of Deferred Ambia Consideration Shares (Accrued expenses and other current liabilities) 16,879    
Consideration transferred 33,372 $ 57,789 $ 33,372
Goodwill recognized 30,808    
Total 37,500    
Net assets acquired:      
Contract assets - unbilled receivables 1,143    
Operating lease liabilities, noncurrent (2,702)    
Finance lease liabilities (1,269)    
Net assets acquired:      
Other noncurrent assets 182    
Sunder Energy LLC [Member] | Customer relationships [Member]      
Net assets acquired:      
Total 30,600    
Sunder Energy LLC [Member] | Trademarks - Ambia [Member]      
Net assets acquired:      
Total 6,100    
Sunder Energy LLC [Member] | Developed technology - Sunder [Member]      
Net assets acquired:      
Total 800    
Provisional Fair Values [Member] | Cobalt Power Systems, Inc. [Member]      
Net assets acquired:      
Cash and cash equivalents 553    
Accounts receivable 3,642    
Inventories 1,739    
Prepaid expenses and other current assets 30    
Property and equipment, net 485    
Intangible assets 3,871    
Operating lease right-of-use assets 1,277    
Accounts payable (3,864)    
Accrued expenses and other current liabilities (1,002)    
Short-term debt with third parties (2,706)    
Other long-term liabilities (1,099)    
Contract liabilities (5,238)    
Deferred tax liability (1,001)    
Fair value of net assets acquired (3,313)    
Fair value of common stock issued 3,333    
Fair value of Deferred Ambia Consideration Shares (Accrued expenses and other current liabilities) 6,331    
Consideration transferred 9,664    
Goodwill recognized 12,977    
Total 3,871    
Provisional Fair Values [Member] | Cobalt Power Systems, Inc. [Member] | Customer relationships [Member]      
Net assets acquired:      
Total 1,100    
Provisional Fair Values [Member] | Cobalt Power Systems, Inc. [Member] | Trade name [Member]      
Net assets acquired:      
Total 2,000    
Provisional Fair Values [Member] | Cobalt Power Systems, Inc. [Member] | Building lease intangible asset – favorable lease [Member]      
Net assets acquired:      
Total 771    
Provisional Fair Values [Member] | Sunder Energy LLC [Member]      
Net assets acquired:      
Accounts receivable 797    
Prepaid expenses and other current assets 3,039    
Property and equipment, net 241    
Intangible assets 37,500    
Operating lease right-of-use assets 313    
Accounts payable (203)    
Accrued expenses and other current liabilities (3,850)    
Contract liabilities (11,673)    
Fair value of net assets acquired 25,967    
Consideration transferred 57,789    
Goodwill recognized 31,822    
Net assets acquired:      
Other noncurrent assets 135    
Operating lease liabilities $ (332)    
Provisional Fair Values [Member] | Sunder Energy LLC [Member] | Customer relationships [Member]      
Net assets acquired:      
Total [1] 1 year    
Provisional Fair Values [Member] | Sunder Energy LLC [Member] | Trademarks - Ambia [Member]      
Net assets acquired:      
Total 1 year    
Measurement Period Adjustments [Member] | Sunder Energy LLC [Member]      
Net assets acquired:      
Total $ 4,300    
Measurement Period Adjustments [Member] | Sunder Energy LLC [Member] | Customer relationships [Member]      
Net assets acquired:      
Total $ 3,400    
Total 10 years    
Measurement Period Adjustments [Member] | Sunder Energy LLC [Member] | Trademarks - Ambia [Member]      
Net assets acquired:      
Total $ 900    
Total 10 years    
Measurement Period Adjustments [Member] | Sunder Energy LLC [Member] | Developed technology - Sunder [Member]      
Net assets acquired:      
Total 2 years    
[1] Useful life is based upon customer consumption, expected to occur within one year.