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STOCK-BASED COMPENSATION
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATIONThe Company recognizes all share-based payments based upon their grant date fair value. The Company grants restricted stock units subject to specific service, performance, and/or market conditions. The Company’s policy is to recognize expense for awards that have service conditions only subject to graded vesting using the straight-line attribution method. The fair value of service and performance-based units is based on the market price of a share of underlying common stock at the date of grant. The fair values of the awards that contain market conditions are estimated using a Monte Carlo simulation approach in a risk-neutral framework to model future stock price movements based upon historical volatility, risk-free rates of return, and correlation matrix. The amount of compensation costs related to restricted stock units and performance units not yet recognized was $17.9 million at March 31, 2022, for which the expense will be recognized through 2025.