Quarterly report pursuant to Section 13 or 15(d)

Common Stock (Details 1)

v2.4.0.6
Common Stock (Details 1) (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Summary of stock option activity    
Number of Shares, At December 31, 2011 1,814,070  
Number of Shares, Options granted 540,000  
Number of Shares, Options exercised     
Number of Shares, Options cancelled     
Number of Shares, At June 30, 2012 2,354,070 1,814,070
Number of Shares, Options vested and expected to vest 2,354,070  
Number of Shares, Options vested and exercisable 451,357  
Weighted Average Exercise Price, At December 31, 2011 $ 2.17  
Weighted Average Exercise Price, Options granted $ 6.98  
Weighted Average Exercise Price, At June 30, 2012 $ 3.27 $ 2.17
Weighted Average Exercise Price, Options vested and expected to vest $ 3.27  
Weighted Average Exercise Price, Options vested and exercisable $ 1.68  
Total Weighted Average Intrinsic Value, At December 31, 2012 $ 7,852  
Total Weighted Average Intrinsic Value, At June 30, 2012 4,182 7,852
Total Weighted Average Intrinsic Value, Options vested and expected to vest 4,182  
Total Weighted Average Intrinsic Value, Options vested and exercisable $ 1,520  
Weighted Average Remaining Contractual Life, At December 31, 2012 8 years 10 months 24 days 9 years 2 months 12 days
Weighted Average Remaining Contractual Life, At June 30, 2012 8 years 10 months 24 days 9 years 2 months 12 days
Weighted Average Remaining Contractual Life, Options vested and expected to vest 8 years 10 months 24 days  
Weighted Average Remaining Contractual Life, Options vested and exercisable 8 years 6 months