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COMPENSATION EXPENSE (Tables)
9 Months Ended
Sep. 30, 2020
Retirement Benefits [Abstract]  
Summary of RSU and Restricted LLC Unit Activity
A summary of RSU and restricted LLC Unit activity during the nine months ended September 30, 2020 is as follows:
 
Number of RSUs
 
Weighted
Average Grant
Date Fair Value
 
Number of Restricted LLC Units
 
Weighted
Average Grant
Date Fair Value
Balance at December 31, 2019
172,971

 
$
53.86

 
237,973

 
$
38.27

Granted
118,197

 
4.98

 
41,858

 
20.76

Forfeited
(17,149
)
 
31.91

 

 

Vested
(72,435
)
 
49.54

 

 

Balance at September 30, 2020
201,584

 
$
28.61

 
279,831

 
$
35.65