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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Restricted Stock
The following table summarizes information about restricted stock awards for the year ended December 31, 2020:
Restricted StockNumber of
Shares		Weighted Average
Grant-Date
Fair Value
Balance at January 1, 2020522,597 $59.57 
Granted225,548 58.23 
Vested(208,652)57.89 
Forfeited(45,614)58.81 
Balance at December 31, 2020493,879 $59.74 
Schedule of Performance Stock Awards
The following table summarizes information about performance stock awards for the year ended December 31, 2020:
Performance StockNumber of
Shares		Weighted Average
Grant-Date
Fair Value
Balance at January 1, 2020204,553 $64.78 
Granted161,610 58.30 
Vested(54,377)55.75 
Forfeited(57,337)78.02 
Balance at December 31, 2020254,449 $53.79