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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes stock option activity under the Company’s active stock option plans:
Year Ended December 31, 2018
Number of
Shares
 
Weighted-Average
Exercise Price
 
Weighted-Average
Remaining
Contract Life
Outstanding options, beginning of year
642,255

 
$
16.13

 
 
Granted
—

 
—

 
 
Exercised
(199,667
)
 
17.12

 
 
Forfeited
(14,412
)
 
20.87

 
 
Expired
—

 
—

 
 
Outstanding options, end of year
428,176

 
$
15.61

 
1.56 years
Outstanding options exercisable, end of year
428,176

 
$
15.61

 
1.56 years
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table presents information regarding the Company’s restricted stock:
As of December 31, 2018
Number of
Shares
 
Weighted-Average
Measurement Date
Fair Value
Restricted stock, beginning of year
292,506

 
$
33.24

Granted
214,893

 
40.97

Vested
(83,736
)
 
32.42

Forfeited
(43,079
)
 
36.64

Canceled
—

 
—

Restricted stock, end of year
380,584

 
$
37.46