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Note 8 - Common Stock Warrants and Earn-out Liability (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 16, 2021 | Apr. 30, 2022 | Jul. 02, 2023 | Jul. 03, 2022 | Apr. 03, 2022 | Jul. 02, 2023 | Jul. 03, 2022 | Dec. 31, 2022 | Oct. 09, 2021
Class of Warrant or Right, Outstanding (in shares) |  |  |  |  |  |  |  |  | 14,666,644
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  |  |  |  |  |  | 1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  |  |  |  | $ 11.50
Warrants and Rights Outstanding, Term (Year) |  |  |  |  |  |  |  |  | 5 years
Warrant Liability |  |  | $ 7,725 |  |  | $ 7,725 |  | $ 4,272 |
Fair Value Adjustment of Warrants |  |  | 2,017 | $ (23,168) |  | 3,452 | $ (20,941) |  |
Business Combination, Contingent Consideration, Liability, Noncurrent |  |  | 2,565 |  |  | 2,565 |  | 1,176 |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  | 961 | (4,234) |  | 1,389 | (1,853) |  |
Empower Sponsor Holdings LLC [Member] |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Noncurrent |  |  | 2,565 |  |  | 2,565 |  | $ 1,176 |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  | $ 961 | $ (4,234) |  | $ 1,389 | $ (1,853) |  |
Empower Sponsor Holdings LLC [Member] | Earn Out Shares [Member] |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 2,187,500 |  |  |  |  |  |  |  |
Empower Sponsor Holdings LLC [Member] | Tranche One [Member] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions (in shares) |  |  |  |  | 1,093,750 |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  |  | $ 14,689 |  |  |  |
Public Warrants [Member] |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  |  |  |  |  |  |  |  | 9,999,977
Stock Issued During Period, Shares, Warrants Exercised (in shares) |  | 33,333 |  |  |  |  |  |  |
Public Warrants [Member] | Measurement Input, Share Price [Member] |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.01
Share Price (in dollars per share) |  |  |  |  |  |  |  |  | 18.00
Public Warrants [Member] | Measurement Input Share Price1 [Member] |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  |  |  |  | 0.10
Share Price (in dollars per share) |  |  |  |  |  |  |  |  | $ 10.00
Private Placement Warrants [Member] |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  |  |  |  |  |  |  |  | 4,666,667

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