Quarterly report pursuant to Section 13 or 15(d)

Equity (Details)

v2.4.0.8
Equity (Details) (USD $)
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Stock Options [Member]
    
Summary of stock option activities    
Number of Units, Beginning balance 2,330,134  
Cancellation (49,950)  
Number of Units, Ending Balance 2,280,184 2,330,134
Weighted Average Exercise Price, Beginning balance $ 0.96  
Weighted Average Exercise Price, Ending Balance $ 0.96 $ 0.96
Weighted Average Remaining Contractual Term (in years), Outstanding 8 years 5 months 1 day 8 years 10 months 28 days
Aggregate Intrinsic Value, Beginning balance $ 685,800  
Aggregate Intrinsic Value, Ending Balance 1,609,035 685,800
Warrants [Member]
    
Summary of stock option activities    
Number of Units, Beginning balance 12,770,636  
warrants exercised (2,211,158)  
Warrants expired (1,023,784)  
Number of Units, Ending Balance 9,535,694 12,770,636
Weighted Average Exercise Price, Beginning balance $ 0.97  
Weighted Average Exercise Price, exercised $ 1.65  
Weighted Average Exercise Price, expired $ 1.65  
Weighted Average Exercise Price, Ending Balance $ 0.77 $ 0.97
Weighted Average Remaining Contractual Term (in years), Outstanding 5 years 4 months 2 days 4 years 5 months 23 days
Aggregate Intrinsic Value, Beginning balance 6,114,768  
Aggregate Intrinsic Value, Ending Balance $ 9,691,302 $ 6,114,768