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STOCK-BASED COMPENSATION - Narrative - Stock Options (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
STOCK-BASED COMPENSATION |  |  |  |  |  |
Proceeds from stock options exercised |  | $ 0.0 |  |  |  |
Weighted average fair value (in dollars per share) |  |  | $ 53.21 | $ 128.86 |  |
Fair value of options vested |  | 11.9 | $ 9.2 | $ 10.8 |  |
Stock Options |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Unrecognized compensation cost |  | $ 8.6 |  |  |  |
Weighted-average period for recognition of unrecognized compensation cost (in years) |  | 1 year 10 months 24 days |  |  |  |
Exercises in period (in shares) |  | 0 | 0 |  |  |
Intrinsic value of stock options exercised |  |  |  | $ 51.4 |  |
Granted (in shares) |  | 0 |  |  |  |
Granted (in dollars per share) |  | $ 0 |  |  |  |
Stock Options | One year from the grant date |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period |  |  | 1 year | 1 year |  |
Stock Options | Three years from the grant date |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period |  |  | 3 years | 3 years |  |
Vesting percentage |  |  | 33.00% | 33.00% |  |
Stock Options | Four years from the grant date |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period |  |  | 4 years | 4 years |  |
Vesting percentage |  |  | 25.00% | 25.00% |  |
Stock Options | Six years from the grant date |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period |  |  | 6 years | 6 years |  |
Performance Options |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Unrecognized compensation cost |  | $ 11.6 |  |  |  |
Weighted-average period for recognition of unrecognized compensation cost (in years) |  | 1 year 10 months 24 days |  |  |  |
Exercises in period (in shares) |  | 0 |  |  |  |
Granted (in shares) |  | 0 | 0 | 0 |  |
Weighted average fair value (in dollars per share) |  |  |  |  | $ 142.54 |
Granted (in dollars per share) |  | $ 0 |  |  |  |
Return performance, percent of target stock price |  | 167.00% |  |  |  | 81.00%
Maximum number of shares for earned (in shares) |  | 395,404 |  |  |  | 27,132
Target number of shares that would vest upon achieving a targeted total shareholder return performance (in shares) |  |  |  |  |  | 16,247
Performance awards earned (in shares) |  | 0 |  |  |  |
Performance Options | Chairman and Chief Executive Officer |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Granted (in dollars per share) | $ 300 |  |  |  |  |
Exercise price premium (percentage) | 25.00% |  |  |  |  |
Post-exercise holding requirement period (in years) | 2 years |  |  |  |  |
Performance Options | Minimum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Return performance, percent of target stock price |  |  |  |  |  | 41.00%
Performance Options | Performance measurement period one |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Return performance, percent of target stock price | 81.00% |  |  |  | 81.00% |
Maximum number of shares for earned (in shares) | 31,940 |  |  |  | 31,940 |
Performance Options | Performance measurement period one | Minimum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Return performance, percent of target stock price | 41.00% |  |  |  | 41.00% |
Performance Options | Performance measurement period two |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Return performance, percent of target stock price | 135.00% |  |  |  | 135.00% |
Maximum number of shares for earned (in shares) | 363,464 |  |  |  | 363,464 |
Performance Options | Performance measurement period two | Minimum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Return performance, percent of target stock price | 81.00% |  |  |  | 81.00% |

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