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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Summary of Restricted Stock Award Activity
The following table summarizes restricted stock award and performance award activity for the years ended December 31, 2019 and 2018:
 
Shares
 
Weighted Average Share Price
Unvested balance at December 31, 2017
422,911

 
$
14.19

Granted
287,982

 
15.25

Vested
(191,287
)
 
14.39

Forfeited
(334
)
 
15.21

Unvested balance at December 31, 2018
519,272

 
14.69

Granted
180,629

 
22.22

Vested
(247,534
)
 
14.50

Forfeited
(134
)
 
15.21

Unvested balance at December 31, 2019
452,233

 
$
17.90
Schedule of Stock-Based Compensation Expense
The following table summarizes the stock-based compensation expense recognized (dollars in thousands):
 
For Year Ended December 31,
 
2019
 
2018
 
2017
Stock-based compensation expense
$
4,104

 
$
3,848

 
$
2,416