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NET PARENT INVESTMENT AND TRANSACTIONS WITH SUNPOWER AND TOTALENERGIES - Components of Net Parent Contribution (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 02, 2022 | Jan. 03, 2021 | Dec. 29, 2019
Related Party Transaction [Line Items] |  |  |
Separation cost | $ (8,084) | $ 0 | $ 517
Stock-based compensation | 7,231 | 7,250 | 7,135
Net parent contribution |  | (129,586) | 114,687
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Equity |  | (129,586) | 114,687
Stock-based compensation expense | (7,231) | (7,250) | (7,135)
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Cash Flows | $ 0 | (133,996) | 92,409
Net Parent Investment |  |  |
Related Party Transaction [Line Items] |  |  |
Net parent contribution |  | (129,586) | 114,687
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Equity |  | (129,586) | 114,687
Affiliated entity |  |  |
Related Party Transaction [Line Items] |  |  |
Corporate allocations |  | 9,200 | 26,100
Affiliated entity | SunPower |  |  |
Related Party Transaction [Line Items] |  |  |
Interest expense, related party |  | 12,167 | 19,485
Stock-based compensation |  | 5,168 | 7,135
Net parent contribution |  | (129,586) | 114,687
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Equity |  | (129,586) | 114,687
Interest expense financed by SunPower |  | (12,167) | (19,485)
Stock-based compensation expense |  | (5,168) | (7,135)
Other |  | 12,925 | 4,342
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Cash Flows |  | (133,996) | 92,409
Affiliated entity | SunPower | Net Parent Investment |  |  |
Related Party Transaction [Line Items] |  |  |
General financing activities |  | (22,163) | 61,971
Acquisition of intellectual property |  | (100,000) | 0
Separation cost |  | (25,000) | 0
Excess cash |  | (8,996) | 0
Corporate allocations |  | 9,238 | 26,096
Interest expense, related party |  | 12,167 | 19,485
Stock-based compensation |  | 5,168 | 7,135
Net parent contribution |  | (129,586) | 114,687
Total Net parent (distribution) contribution per Consolidated and Combined Statements of Equity |  | (129,586) | 114,687
Interest expense financed by SunPower |  | (12,167) | (19,485)
Stock-based compensation expense |  | $ (5,168) | $ (7,135)

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