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Stock-Based Compensation Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2013
Share-based Compensation [Abstract]  
Schedule of share-based payment award, stock options, valuation assumptions
The weighted-average assumptions used to value options as of their grant date were as follows:
 
Nine Months Ended
 
Nine Months Ended
 
September 30,
2013
 
September 30,
2012
Risk-free interest rate
1.06
%
 
0.72
%
Expected volatility
50.89
%
 
64.60
%
Expected life (in years)
4.24

 
4.22

Dividend yield
0
%
 
0
%