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9. Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2015
Fair Value Measurements Tables  
Schedule of financial liabilities measured at fair value
    Total     Level 1     Level 2     Level 3  
Warrant liability   $ 51     $ -     $ -     $ 51  
Schedule of activity for liabilities measured at fair value
Balance as of December  31, 2014   $ 108  
Related change in fair value     (29 )
Balance as of March 31, 2015   $ 79  
Related change in fair value     (12 )
Balance as of June 30, 2015   $ 67  
Related change in fair value     (16 )
Balance as of September 30, 2015   $ 51