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STOCK INCENTIVE PLANS - RSU Narratives (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 1 Months Ended | 12 Months Ended |  |
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Dec. 02, 2024 | Mar. 28, 2022 | Sep. 24, 2021 | Nov. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 09, 2021 | Apr. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  |  |  |  |  |  | 25,204,250
Vesting period (in years) |  |  |  |  |  | 4 years |  |  |  |
The 2019 Option Plan | Common Stock, LT50 |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  |  |  |  |  | 16,856,770 |
The 2019 Option Plan | Common Class A |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  | 4,339,690 |  |  |  | 16,856,770 |
Restricted stock units |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Granted (in shares) | 400,675 |  |  | 5,666,260 |  |  |  |  |  |
Vesting period (in years) |  |  | 8 years |  |  |  |  |  |  |
Granted (in dollars per share) | $ 3.40 |  |  |  |  | $ 2.82 | $ 8.17 | $ 18.21 |  |
Vested in period, fair value |  |  |  |  |  | $ 3.9 | $ 5.1 | $ 19.1 |  |
Share-based compensation expense not yet recognized |  |  |  |  |  | $ 100.6 |  |  |  |
Share-based compensation not yet recognized, recognition period (in years) |  |  |  |  |  | 4 years 5 months 19 days |  |  |  |
Restricted stock units | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Vesting percentage (percent) |  |  | 12.50% |  |  |  |  |  |  |
Restricted stock units | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Vesting percentage (percent) |  |  | 3.125% |  |  |  |  |  |  |
Restricted stock units | Common Stock, LT50 |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  | 2,833,130 |  | 0 |  |  |  |
Vested (in shares) |  |  |  |  |  | 405,457 |  |  |  |
Restricted stock units | Common Class A |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Granted (in shares) | 159,841 | 43,060 |  | 2,833,130 |  | 790,580 |  |  |  |
Vesting period (in years) |  | 8 years |  |  |  |  |  |  |  |
Granted (in dollars per share) |  | $ 18.93 |  |  |  |  |  |  |  |
Vested (in shares) |  |  |  |  |  | 1,036,347 |  |  |  |
Restricted stock units | The 2019 Option Plan |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  | 8,679,380 |  |  |  |  |
Granted (in shares) |  |  |  |  | 2,980,260 |  |  |  |  |
Restricted stock units | The 2019 Option Plan | Common Stock, LT50 |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  | 4,339,690 |  |  |  |  |
Restricted stock units | The 2019 Option Plan | Common Class A |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  | 4,339,690 |  |  |  |  |
Granted (in shares) |  |  |  |  | 1,490,130 |  |  |  |  |
Restricted stock units | 2021 Incentive Plan | Common Class A |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  | 27,780 |  | 230,064 |  |  |  |
Vested (in shares) |  |  |  |  |  | 64,992 |  |  |  |

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