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SHARE-BASED AWARDS - SUMMARY (Details) shares in Thousands, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) plan shares | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Share-based expense (net of estimated forfeitures) |  |  |
Share-based compensation expense | $ 26.5 | $ 23.8 | $ 18.3
Tax benefit realized upon stock vesting | 5.6 | 6.1 | 10.6
Fair value of stock vested | 25.6 | $ 27.8 | $ 44.0
Non-vested restricted stock units and performance-based equity awards |  |  |
Share-based expense (net of estimated forfeitures) |  |  |
Unrecognized compensation cost | $ 24.5 |  |
Unrecognized compensation cost, weighted average period for recognition | 1 year 8 months 12 days |  |
2016 Plan |  |  |
SHARE-BASED AWARDS |  |  |
Common stock initially available for future issuance (in shares) | shares | 4,350 |  |
Additional shares authorized for issuance | shares | 0 |  |
Number of separate incentive compensation programs | plan | 4 |  |
Number of share based compensation plans within the Company's incentive compensation programs | plan | 3 |  |
2016 Plan | Discretionary Grant Program |  |  |
SHARE-BASED AWARDS |  |  |
Minimum exercise price as a percentage of fair market value of common stock | 100.00% |  |
2016 Plan | Time Based Restricted Stock Units | Stock Issuance Program |  |  |
SHARE-BASED AWARDS |  |  |
Vesting period of awards granted | 3 years |  |
2016 Plan | Time Based Restricted Stock Units | Automatic Grant Program |  |  |
SHARE-BASED AWARDS |  |  |
Vesting period of awards granted | 1 year |  |
2016 Plan | Performance Based Restricted Stock Units | Stock Issuance Program |  |  |
SHARE-BASED AWARDS |  |  |
Vesting period of awards granted | 3 years |  |

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