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Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Summary of additional information concerning restricted stock and restricted stock units
The following table summarizes restricted stock award activity, including performance stock units, for the year ended December 31, 2019 (units in thousands):
 
Restricted
Stock
Units
 
Weighted
Average
Grant Date
Fair Value
Unvested at January 1, 2019
1,698

 
$
27.13

Granted
652

 
32.33

Vested
(468
)
 
27.52

Forfeited
(182
)
 
31.37

Unvested at December 31, 2019
1,700

 
28.56