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Stock-Based Compensation Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2014
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:
 
 
 
 
 
Six Months Ended
 
Six Months Ended
 
June 30,
2014
 
June 30,
2013
Risk-free interest rate
1.35
%
 
0.67
%
Expected volatility
47.65
%
 
52.31
%
Expected life (in years)
4.20

 
4.24

Dividend yield
0
%
 
0
%