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Stock-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2013
Stock-Based Compensation Plans [Abstract]  
Summary of changes in outstanding stock options
The following is a summary of the changes in outstanding stock options for the six months ended June 30, 2013:
 
 
 
Shares
  
Weighted
Average Exercise
Price
  
Weighted Average
Remaining
Contractual
Term (Years)
 
 
 
  
  
 
Outstanding at December 31, 2012
  
29,150
  
$
12.20
   
1.9
 
Expired
  
   
   
 
Exercised
  
(11,525
)
  
12.37
   
 
Forfeited, other
  
   
   
 
Outstanding at June 30, 2013
  
17,625
  
$
12.09
   
1.6
 
 
            
Options exercisable at June 30, 2013
  
17,625
  
$
12.09
   
1.6
 
Restricted and performance-based share activity
Our restricted and performance-based share activity was as follows for the six months ended June 30, 2013:
 
 
 
Shares
  
Weighted Average Grant Date Fair Value Per Share
 
Balance at December 31, 2012
  
533,625
  
$
13.03
 
Granted
  
7,000
   
32.01
 
Vested
  
(8,075
)
  
12.69
 
Forfeited
  
(4,575
)
  
13.54
 
Balance at June 30, 2013
  
527,975
  
$
13.28