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Stock Based Compensation Plan (Tables)
9 Months Ended
Sep. 30, 2014
Stock Based Compensation Plan [Abstract]  
Stock Award Activity
The following table summarizes our award activity during the nine months ended September 30, 2014:
  
Restricted Stock Awards
  
Stock-Settled
Appreciation Rights
 
 
 
Shares or Units
  
Weighted-Average
Award Price
  
Rights
  
Weighted-Average
Award Price
 
Outstanding at December 31, 2013
  
437,000
  
$
14.46
   
149,700
  
$
15.78
 
Granted
  
146,748
   
28.72
   
   
 
Restrictions lapsed or exercised
  
(235,925
)
  
14.01
   
(13,725
)
  
12.30
 
Forfeited
  
(16,260
)
  
21.34
   
(6,000
)
  
18.14
 
Outstanding at September 30, 2014
  
331,563
  
$
20.75
   
129,975
  
$
16.04
 
Exercisable at September 30, 2014
  
   
   
51,975
  
$
12.88