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Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
The following table summarizes the Company's restricted share activity for the year ended December 31, 2019:
 
Number of Shares
 
Weighted Average Fair Value
Non-vested balance at December 31, 2018
905,495

 
$
20.38

Shares granted
295,447

 
32.40

Shares vested(1)
(637,128
)
 
15.80

Shares forfeited
(2,602
)
 
34.50

Non-vested balance at December 31, 2019
561,212

 
$
31.84

                
(1)
Plan participants tendered 174,896 common shares to satisfy income tax withholding obligations. These shares were subsequently retired by the Company