Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 1)

v2.4.0.6
Stock-Based Compensation (Details 1) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Summary of weighted average assumptions to value options granted        
Grant date fair value of options       $ 4.96 $ 5.26
Volatility       39.60% 39.30%
Risk-free interest rate       1.20% 2.50%
Dividend yield       0.00% 0.00%
Expected term (in years)       6 years 6 years