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Restricted Stock Units (Tables)
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Summary of Restricted Stock Unit Activity
The following is a summary of the RSU activity for the years ended December 31, 2019 and 2018:
 
Number of
Restricted
Stock Units
Outstanding
 
Weighted
Average
Grant
Date Fair
Value
Unvested December 31, 2017
338,055

 
$
14.95

Granted
170,403

 
28.66

Vested
(123,539
)
 
17.44

Forfeited
(2,821
)
 
17.71

Unvested December 31, 2018
382,098

 
$
20.24

Granted
192,987

 
31.42

Vested
(85,153
)
 
25.98

Forfeited
(46,005
)
 
21.38

Unvested December 31, 2019
443,927

 
$
23.88