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SHARE-BASED PAYMENTS - Schedule of employee stock incentive plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units |  |  | $ 17,594 | $ 35,264
2021 Stock Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | $ 2,588 | $ 10,429 | 17,002 | 33,972
2021 Stock Incentive Plan | Share-based compensation expenses for continuing operations |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | 2,216 | 9,849 | 15,650 | 32,046
2021 Stock Incentive Plan | Share-based compensation expenses for discontinued operations |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | 372 | 580 | 1,352 | 1,926
Employee Stock Purchase Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | 72 | 132 | 379 | 556
Employee Stock Purchase Plan | Share-based compensation expenses for continuing operations |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | 64 | 114 | 340 | 485
Employee Stock Purchase Plan | Share-based compensation expenses for discontinued operations |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total share-based compensation expense for restricted stock units | $ 8 | $ 18 | $ 39 | $ 71

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