Annual report pursuant to Section 13 and 15(d)

4. Fair Value Measurements (Tables)

v3.19.1
4. Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2018
Fair Value Disclosures [Abstract]  
Fair value hierarchy for financial assets
     Level 1      Level 2      Level 3  
December 31, 2018                  
Money market funds   $ 1,706,376     $ -     $ -  
Total   $ 1,706,376     $ -     $ -  
                         
December 31, 2017                        
Money market funds   $ 2,120,269     $ -     $ -  
Total   $ 2,120,269     $ -     $ -