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Employee Stock Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2014
Employee Stock Benefit Plans [Abstract]  
Stock Option Activity
Stock option activity under all of the Company’s share-based compensation plans for the nine months ended September 30, 2014 was as follows:

  
Number of Options
  
Weighted Average Exercise Price
 
Outstanding, January 1, 2014
  
1,132,678
  
$
16.51
 
Granted
  
180,500
   
14.11
 
Exercised
  
-
   
-
 
Cancelled
  
(4,999
)
  
58.63
 
Outstanding, September 30, 2014
  
1,308,179
  
$
16.02
 
Options exercisable at September 30, 2014
  
517,179
  
$
16.45
 

Weighted Average Assumptions Used to Estimate Fair Value of Stock Options
The Company uses the Black-Scholes option-pricing model to estimate fair value of grants of stock options with the following weighted-average assumptions:

  
Nine Months Ended September 30, 2014
 
Risk-free interest rate
  
2.17%
 
Volatility
  
78.41%
 
Expected dividend yield
  
0%
 
Expected life
 
5.5 years
 
Estimated forfeiture rate
  
0%