XML 148 R126.htm IDEA: XBRL DOCUMENT
v3.25.4

Borrowings and Derivative Liabilities - Schedule of Borrowings and Derivative Liabilities (Details) - USD ($) $ in Thousands | Sep. 28, 2025 | Dec. 29, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | $ 204,277 | $ 147,331 | $ 28,657
Total notes payable and convertible notes, net |  |  | 61,937
Less current portion | (21,500) | (1,500) | (61,937)
Notes payable and convertible notes, net of current portion | 182,777 | 145,831 |
July 2024 Notes [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  | 17,965 |
July 2024 Notes derivative liability [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  | 13,563 |
July 2024 Notes – related parties [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | 8,155 | 24,632 |
July 2024 derivative liability – related parties [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | 13,940 | 21,127 |
September 2024 Notes [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  | 5,636 |
September 2024 Notes derivative liability [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | 53,301 | 55,474 |
September 2024 Notes – related party [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | 1,714 | 476 |
September 2024 Notes – derivative liability – related party [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable | $ 5,922 | 6,958 |
2018 Bridge Notes [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  |  | 11,031
Revolver Loan [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  | 1,500 | 5,168
Secured Credit Facility [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  |  | 12,158
Polar Settlement Agreement [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Total Notes payable |  |  | 300
Debt in CS Solis [Member] |  |  |
Schedule of Borrowings and Derivative Liabilities [Line Items] |  |  |
Debt in CS Solis |  |  | $ 33,280

X
- Definition Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ConvertibleLongTermNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_ConvertibleNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ConvertibleNotesPayableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of debt and lease obligation, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_NotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SubordinatedBorrowingLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_JulyTwoThousandTwentyFourNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_JulyTwoThousandTwentyFourNotesDerivativeLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_JulyTwoThousandTwentyFourNotesRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_JulyTwoThousandTwentyFourNotesDerivativeLiabilityRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_SeptemberTwoThousandTwentyFourNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_SeptemberTwoThousandTwentyFourNotesDerivativeLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_SeptemberTwoThousandTwentyFourNotesRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_SeptemberTwoThousandTwentyFourNotesDerivativeLiabilityRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_TwoZeroOneEightBridgeNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_RevolverLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_SecuredCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_PolarSettlementAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=spwr_DebtInCSSolisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |