Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock Options, Stock Purchase Plan and Warrants (Details)

v2.4.0.6
Stock Options, Stock Purchase Plan and Warrants (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Fair value of each stock option award granted    
Expected term (in years) 3 years 8 months 12 days 3 years 7 months 6 days
Risk-free interest rate (%) 0.60% 1.18%
Expected volatility (%) 51.00% 55.00%
Dividend yield (%) 0.00% 0.00%
Weighted average fair value/share at grant date $ 0.73 $ 0.51