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STOCK-BASED COMPENSATION (Details)
$ in Millions
 1 Months Ended 12 Months Ended
Feb. 28, 2023
item
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
shares
Stock-based Compensation          
Stock-based compensation expense | $   $ 33.9 $ 30.7 $ 26.6  
Payments for the purchase of shares to satisfy the employee income tax withholdings | $   13.9 8.9 6.2  
Non-employee Director          
Stock-based Compensation          
Stock-based compensation expense | $   $ 1.9 $ 1.9 $ 2.0  
Restricted Stock Units          
Stock-based Compensation          
Number of shares of common stock of which unit is convertible (in shares)   1      
Vesting period   3 years      
Period of advance notice required   6 months      
Qualified retirement eligibility age for grants awarded in and after 2017   55 years      
Qualified retirement eligibility number of years of service for grants awarded in and after 2017   10 years      
Restricted Stock Units | Non-employee Director          
Stock-based Compensation          
Vesting period   1 year      
RSAs          
Stock-based Compensation          
Non vested RSAs   0      
PSUs          
Stock-based Compensation          
Number of shares of common stock of which unit is convertible (in shares)   1      
Vesting period   3 years      
Non vested RSAs   134,484 166,702 152,410 122,666
Shares purchased to satisfy the employee income tax withholdings (in shares)   21,459      
Payments for the purchase of shares to satisfy the employee income tax withholdings | $   $ 2.7      
Vested (in shares)   55,399 16,834 29,468  
Risk-free interest rate 4.10%        
Volatility time period 3 years        
Expected volatility 33.50%        
Correlation to S&P 500 Index time period 3 years        
Correlation with S&P index | item 0.53        
Unrecognized compensation expense | $   $ 49.0      
Unrecognized compensation expense, period for recognition   2 years      
PSUs | Minimum          
Stock-based Compensation          
Units ultimately expected to be awarded   0.00%      
PSUs | Maximum          
Stock-based Compensation          
Units ultimately expected to be awarded   200.00%      
Restricted Stock          
Stock-based Compensation          
Vested (in shares)   219,527      
Restricted Stock and Restricted Stock Units          
Stock-based Compensation          
Non vested RSAs   638,181 556,062 443,319 342,082
Shares purchased to satisfy the employee income tax withholdings (in shares)   85,001      
Payments for the purchase of shares to satisfy the employee income tax withholdings | $   $ 11.2      
Vested (in shares)   237,315 201,457 166,598