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COMMON STOCK WARRANTS AND EARN-OUT LIABILITY (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jul. 16, 2021 tranche $ / shares shares | Jun. 28, 2026 USD ($) | Jun. 29, 2025 USD ($) | Apr. 03, 2022 USD ($) shares | Jun. 28, 2026 USD ($) | Jun. 29, 2025 USD ($) | Dec. 31, 2025 USD ($)
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Class of warrant or right, outstanding (in shares) | shares | 14,666,644 |  |  |  |  |  |
Warrant liability | $ |  | $ 444 |  |  | $ 444 |  | $ 2,024
Change in fair value of warrant liability | $ |  | (548) | $ (7) |  | (1,579) | $ (80) |
Earn-out liability | $ |  | 273 |  |  | 273 |  | 2,045
Change in fair value of earn-out liability | $ |  | (1,258) | $ (219) |  | (1,772) | $ (404) |
Empower Sponsor Holdings Llc |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Earn-out liability | $ |  | $ 273,000 |  |  | $ 273,000 |  | $ 2,045,000
Empower Sponsor Holdings Llc | Unvested earn-out shares |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares | 2,187,500 |  |  |  |  |  |
Number of tranches | tranche | 2 |  |  |  |  |  |
Empower Sponsor Holdings Llc | Tranche One |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Stock issued during period, shares, acquisitions (in shares) | shares |  |  |  | 1,093,750 |  |  |
Stock issued during period, value, acquisitions | $ |  |  |  | $ 14,689 |  |  |
Empower Sponsor Holdings Llc | Tranche Two |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Earnout arrangement, maximum term (in years) | 7 years |  |  |  |  |  |
Public Warrants |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Class of warrant or right, outstanding (in shares) | shares | 9,999,977 |  |  |  |  |  |
Private Warrants |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Class of warrant or right, outstanding (in shares) | shares | 4,666,667 |  |  |  |  |  |
Private and Public Warrants |  |  |  |  |  |  |
Common Stock Warrants And Earn-out Liability [Line Items] |  |  |  |  |  |  |
Class of warrant or right, number of securities called by each warrant or right (in shares) | shares | 1 |  |  |  |  |  |
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares | $ 11.50 |  |  |  |  |  |

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