v2.4.0.8
4. Stockholders' Equity (Details 1) (USD $)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Number of Options    
Number of Options Outstanding, Beginning 2,135,630 1,236,342
Number of Options Forfeited/Cancelled (356,000) (263,050)
Number of Options Granted 1,400,000 380,000
Number of Options Outstanding, Ending 3,179,630 1,353,292
Vested and expected to vest 1,394,613 286,400
Exercisable 893,380 875,958
Weighted Average Exercise Price    
Weighted Average Exercise Price Outstanding, Beginning $ 1.26 $ 2.47
Weighted Average Exercise Price Forfeited/Cancelled $ 1.61 $ 1.71
Weighted Average Exercise Price Granted $ 0.9 $ 0.4
Weighted Average Exercise Price Outstanding, Ending $ 1.06 $ 2.1
Weighted Average Exercise Price vest $ 0.78 $ 2.1
Weighted Average Exercise Price Exercisable $ 1.79 $ 2.6
Weighted-average fair value of options granted during the period $ 0.77 $ 0.32