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Equity-based compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 01, 2023 | Apr. 02, 2022 | Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Income tax expense (benefit) | $ (146) | $ (5,132) |
Unamortized compensation expense, options | 9,614 |  |
2021 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Equity compensation | 1,718 | 4,731 |
Income tax expense (benefit) | $ (430) | 1,225 |
Common Class A |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock closing price, (in dollars per share) |  |  | $ 1.07
Common Class A | 2021 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares authorized to be awarded (in shares) | 11,278,656 |  |
Number of shares available to be awarded (in shares) | 2,762,266 |  |
RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unamortized compensation expense, RSUs | $ 2,265 |  |
Compensation expense net yet amortized, period for recognition | 2 years 6 months |  |
RSUs | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 1 year |  |
RSUs | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense net yet amortized, period for recognition | 3 years 9 months 10 days |  |
Expiration period | 10 years |  |
Weighted-average fair value of stock options granted (in dollars per share) | $ 1.10 |  |
Stock options | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 2 years |  |
Stock options | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
Employee Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares available to be awarded (in shares) | 1,181,830 |  |
Equity compensation | $ 128 | $ 158 |
Number of shares issued (in shares) | 222,076 | 48,993 |

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