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Investments in Cash Equivalents and Marketable Securities (Tables)
6 Months Ended
Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]  
Fair value of marketable securities, by type
The following table summarizes the fair value of our marketable securities, by level within the fair value hierarchy, as of each period end:
June 30, 2020December 31, 2019
Level 1Level 2TotalLevel 1Level 2Total
Commercial paper—  —  —  —  $2,119,607  $2,119,607  
Total fair value of marketable securities—  —  —  —  $2,119,607  $2,119,607