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Share-based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of restricted stock or restricted stock unit activity

Table 15.1 summarizes restricted stock or restricted stock unit (collectively called “restricted stock”) activity during 2018.
Restricted stock
Table
15.1
 
 
 
 
Weighted Average Grant Date Fair Market Value
 
Shares
Restricted stock outstanding at December 31, 2017
$
8.78

 
3,300,609

Granted
15.69

 
1,685,264

Vested
7.81

 
(1,371,063
)
Forfeited
13.28

 
(31,304
)
Restricted stock outstanding at December 31, 2018
$
12.27

 
3,583,506