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Cash, Cash Equivalents and Short-Term Investments (Tables)
3 Months Ended
Mar. 31, 2020
Cash and Cash Equivalents [Abstract]  
Schedule of cash, cash equivalents and short-term investments
   As of
March 31, 2020
   As of
December 31, 2019
 
Cash and cash equivalents  $6,505,141   $6,293,293 
Short-term investments   493,821    2,480,753 
Total  $6,998,962   $8,774,046