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EMPLOYEE COMPENSATION PLANS (Tables)
12 Months Ended
Dec. 31, 2021
EMPLOYEE COMPENSATION PLANS [Abstract]  
Summary of non-vested RSU's and performance-based RSU's

    

    

Weighted

 

Average

 

Grant Date

 

Shares

Fair Value

 

Unvested as of December 31, 2020

 

1,029,176

$

41.12

Granted

 

325,078

$

96.47

Vested

 

(367,597)

$

38.57

Cancellations/expirations

 

(101,045)

$

47.87

Unvested as of December 31, 2021

 

885,612

$

61.73