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3. Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2016
Fair Value Measurements Tables  
Fair value hierarchy for financial assets
    Level 1     Level 2     Level 3  
December 31, 2016                  
Money market funds   $ 1,611,799     $ -     $ -  
Total   $ 1,611,799     $ -     $ -  
                         
December 31, 2015                        
Money market funds   $ 1,912,188     $ -     $ -  
Total   $ 1,912,188     $ -     $ -