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v3.20.2

Short-term Investments (Tables) | 9 Months Ended
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Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract] |
Schedule of Summary of Investments | The following is a summary of available-for-sale securities as of September 30, 2020 and December 31, 2019:
|  |  | As of September 30, 2020
| Contractual Maturity (in years) | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Market Value
Mutual funds | --- |  | $ | 152,177,676 |  |  | $ | 1,752,552 |  |  | $ | (1,128,029) |  |  | $ | 152,802,199 |
Corporate debt securities | --- |  | 1,200,000 |  |  | — |  |  | (27,840) |  |  | 1,172,160 |
Certificates of deposit | Less than 1 |  | 3,000,000 |  |  | 32,980 |  |  | — |  |  | 3,032,980 |
U.S. agency mortgage-backed securities | * |  | 1,529,750 |  |  | — |  |  | (1,345) |  |  | 1,528,405 |
|  |  | $ | 157,907,426 |  |  | $ | 1,785,532 |  |  | $ | (1,157,214) |  |  | $ | 158,535,744 |
|  |  | As of December 31, 2019
| Contractual Maturity (in years) | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Market Value
Mutual funds | --- |  | $ | 66,599,219 |  |  | $ | 754,709 |  |  | $ | (15,911) |  |  | $ | 67,338,017 |
*No single maturity date.

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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