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9. Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2014
Fair Value Measurements Tables  
Schedule of financial liabilities measured at fair value
    Total     Level 1     Level 2     Level 3  
Warrant liability   $ 179     $ -     $ -     $ 179  
Schedule of activity for liabilities measured at fair value
Balance as of December 31, 2013   $ 60  
Issuances of warrant liabilities     -  
Exercise of warrant liabilities     -  
Related change in fair value     48  
Balance as of March 31, 2014   $ 108  
Issuances of warrant liabilities     -  
Exercise of warrant liabilities     -  
Related change in fair value     71  
Balance as of June 30, 2014   $ 179