Annual report pursuant to Section 13 and 15(d)

Equity (Details)

v2.4.0.8
Equity (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Stock Options [Member]
      
Summary of stock option activities      
Number of Units, Beginning balance 2,330,134 273,859   
Granted 787,450 2,056,275  
Cancellation and Forfeited (1,115,550)    
Exercised (16,650)    
Number of Units, Ending Balance 1,985,384 2,330,134 273,859
Weighted Average Exercise Price, Beginning balance $ 0.96 $ 1.29   
Weighted Average Exercise Price, Granted $ 6.62 $ 0.96  
Weighted Average Exercise Price, exercised $ 0.78    
Weighted Average Exercise Price, cancelled       
Weighted Average Exercise Price, Ending Balance $ 3.23 $ 0.96 $ 1.29
Weighted Average Remaining Contractual Term (in years), Outstanding 8 years 4 months 2 days 8 years 10 months 28 days 5 years 6 months 4 days
Weighted Average Remaining Contractual Term (in years), Granted 10 years 8 years 10 months 21 days  
Aggregate Intrinsic Value, Beginning balance $ 685,800      
Aggregate Intrinsic Value, Ending Balance 5,908,696 685,800   
Warrant [Member]
      
Summary of stock option activities      
Number of Units, Beginning balance 12,770,636 5,364,557  
Granted 329,866 7,406,079  
Cancellation and Forfeited (1,023,784)    
Exercised (2,403,429)    
Number of Units, Ending Balance 9,673,290 12,770,636 5,364,557
Weighted Average Exercise Price, Beginning balance $ 0.97 $ 0.51  
Weighted Average Exercise Price, Granted $ 7.47 $ 1.32  
Weighted Average Exercise Price, exercised $ 1.58    
Weighted Average Exercise Price, Ending Balance $ 1.06 $ 0.97 $ 0.51
Weighted Average Remaining Contractual Term (in years), Outstanding 4 years 10 months 21 days 4 years 5 months 23 days 6 years 9 months 4 days
Weighted Average Remaining Contractual Term (in years), Granted 6 years 4 months 24 days 3 years 9 months 4 days  
Aggregate Intrinsic Value, Beginning balance 6,114,768 3,261,367  
Aggregate Intrinsic Value, Ending Balance $ 47,396,307 $ 6,114,768 $ 3,261,367