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EMPLOYEE BENEFIT AND DEFERRED COMPENSATION PLANS - Restricted Stock Units (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |  | 12 Months Ended
--- | --- | ---
May 12, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Compensation plans: |  |  |  |
Compensation expense |  | $ 19,729 | $ 26,160 | $ 147,904
Taxamo |  |  |  |
Compensation plans: |  |  |  |
Purchase price | $ 200,689 |  |  |
Restricted Stock Units |  |  |  |
Compensation plans: |  |  |  |
Compensation expense |  | 9,286 | $ 2,964 | $ 171
Unrecognized compensation cost |  | $ 29,614 |  |
Unrecognized compensation expense period |  | 2 years 10 months 24 days |  |
Units |  |  |  |
Beginning balance (in units) |  | 530 | 101 |
Granted (in units) |  | 2,240 | 478 | 101
Vested (in units) |  | (68) | (15) |
Forfeited (in units) |  | (140) | (34) |
Ending balance (in units) |  | 2,562 | 530 | 101
Weighted Average Per Share |  |  |  |
Beginning balance (in dollars per share) |  | $ 26.49 | $ 23.80 |
Granted (in dollars per share) |  | 13.55 | 27.07 | $ 23.80
Vested (in dollars per share) |  | 21.96 | 29.67 |
Forfeited (in dollars per share) |  | 15.59 | 25.18 |
Ending balance (in dollars per share) |  | $ 15.90 | $ 26.49 | $ 23.80
Restricted Stock Units | Minimum |  |  |  |
Compensation plans: |  |  |  |
Service requirement (in years) |  | 1 year |  |
Restricted Stock Units | Maximum |  |  |  |
Compensation plans: |  |  |  |
Service requirement (in years) |  | 4 years |  |
PSU |  |  |  |
Compensation plans: |  |  |  |
Compensation expense |  | $ 0 |  |
Grant date fair value |  | $ 15,803 |  |
PSU | Taxamo |  |  |  |
Units |  |  |  |
Granted (in units) |  | 895 |  |

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