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STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of restricted stock award and unit activity
The following tables summarizes activity for the three months ended March 31, 2023 and 2022:
Number of
Unvested
Restricted Stock Units		Weighted
Average
Grant Date
Fair Value		Number of
Unvested
Performance Vesting Restricted Stock Units		Weighted
Average
Grant Date
Fair Value
Unvested shares as of January 1, 2023197,772 $77.49 190,804 $52.15 
Granted43,415 77.84 68,726 56.57 
Vested(11,608)70.86 — — 
Forfeited/canceled(971)87.68 (5,069)47.67 
Unvested shares as of March 31, 2023228,608 $77.85 254,461 $53.43 
Number of
Unvested
Restricted Stock Units		Weighted
Average
Grant Date
Fair Value		Number of
Unvested
Performance Vesting Restricted Stock Units		Weighted
Average
Grant Date
Fair Value
Unvested shares as of January 1, 2022198,413 $66.04 153,138 $48.54 
Granted2,154 73.83 — — 
Vested(3,074)65.75 — — 
Forfeited/canceled(1,157)66.89 — — 
Unvested shares as of March 31, 2022196,336 $67.16 153,138 $48.54 
Schedule of Grant Date Fair Value of Awards Granted
The table below summarizes the assumptions used in the Monte Carlo simulation to determine the grant date fair value of awards granted during the three months ended March 31, 2023:
Grant dateJanuary 24, 2023March 3, 2023
Forecast period (years)33
Risk-free interest rates3.88%4.64%
Implied equity volatility87.2%86.4%
Stock price on the date of grant$72.99$82.20