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Short-term Investments (Tables)

12 Months Ended

Dec. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of investments

The following is a summary of available-for-sale securities as of December 31, 2020 and 2019:

									As of December 31, 2020
			Contractual Maturity (in years)						Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Market Value
Mutual funds			---						$	153,177,675					$	2,339,639					$	(644,140)					$	154,873,174
Certificates of deposit			Less than 1						3,000,000						26,260						(10,000)						3,016,260
U.S. agency mortgage-backed securities			*						3,062,256						—						(36,755)						3,025,501
									$	159,239,931					$	2,365,899					$	(690,895)					$	160,914,935

									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.

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