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Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Share-Based Compensation [Abstract]  
Stock Option Plan Activity
Stock option activity for the year ended December 31, 2017 is summarized below:

  
Shares
  
Weighted
Average
Exercise
Price
 
 
Weighted
Average
Remaining
Contractual
Life
(in years)
 
Aggregate
Intrinsic
Value
(in thousands)
 
Options outstanding, January 1, 2017
  
60,605
  
$
20.05
     
Granted
  
-
   
-
     
Exercised
  
(58,105
)
  
20.05
     
Canceled or expired
  
(2,500
)
  
20.05
     
Options outstanding, December 31, 2017
  
-
  
$
-
   
-
  
$
-
 
Options exercisable, December 31, 2017
  
-
  
$
-
   
-
  
$
-
 
Restricted Stock Activity
Restricted stock activity for the year ended December 31, 2017 is summarized below.

  
Shares
  
Weighted
Average
Grant
Date Fair
Value
 
Nonvested, January 1, 2017
  
-
  
$
-
 
Issued
  
2,245
   
33.60
 
Vested
  
-
   
-
 
Forfeited
  
-
   
-
 
Nonvested, December 31, 2017
  
2,245
  
$
33.60