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STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation expense |  |  | $ 50.0 | $ 25.3 | $ 21.3
Tax benefits related to stock-based compensation plans |  |  | 1.4 | $ 6.3 | $ 8.9
Unamortized compensation expense expected to be vested |  |  | $ 41.9 |  |
Unamortized compensation expense expected to be vested, period for recognition |  |  | 1 year 4 months 24 days |  |
Risk-free interest rate, year |  |  | 7 years |  |
Employee Stock Option |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation expense |  |  | $ 2.3 |  |
Non-Vested Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation expense |  |  | 20.8 |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation expense |  |  | $ 9.4 |  |
Incentive Stock Awards |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 3 years |  |
Stock-based compensation expense |  |  | $ 16.5 |  |
Percentage of incentive stock awards expected to be vested and awarded of stocks granted |  |  | 115.00% |  |
Incentive Stock Awards | Scenario Forecast |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Percentage of incentive stock awards expected to be vested and awarded of stocks granted | 108.00% | 111.00% |  |  |
Incentive Stock Awards | Minimum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Percentage of incentive stock awards expected to be vested and awarded of stocks granted |  |  | 0.00% |  |
Incentive Stock Awards | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Percentage of incentive stock awards expected to be vested and awarded of stocks granted |  |  | 200.00% |  |
Directors Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares issued |  |  | 909,881 |  |
Stock-based compensation expense |  |  | $ 1.0 |  |
Directors Plan | Employee Stock Option |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares authorized for grants |  |  | 1,000,000 |  |
Plan term, years |  |  | 10 years |  |
Award vesting period |  |  | 3 years |  |
Directors Plan | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 1 year |  |
Shares issued |  |  | 15,729 | 12,960 | 16,500
Directors Plan | Restricted Stock Units (RSUs) |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 1 year |  |
Plan 2011 |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares available for grant |  |  | 1,870,396 |  |
Plan 2011 | Employee Stock Option |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Plan term, years |  |  | 10 years |  |
Award vesting period |  |  | 3 years |  |
Plan 2011 | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 3 years |  |
Plan 2000 | Employee Stock Option |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Plan term, years |  |  | 10 years |  |
Award vesting period |  |  | 3 years |  |
Plan 2000 | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 3 years |  |

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