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11. Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Schedule of financial liabilities measured at fair value on a recurring basis
    Total     Level 1     Level 2     Level 3  
                                 
Warrant liability   $ 267,950     $ -     $ -     $ 267,950  
Schedule of activity for liabilities measured at fair value using Level 3 inputs
Balance as of December 31, 2011   $ -  
Issuances of warrant liabilities     1,189,095  
Exercise of warrant liabilities     (1,018,167 )
Realized and unrealized loss        
    related to change in fair value     97,022  
Balance as of December 31, 2012   $ 267,950