Fair Value Measurements (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Marketable securities
Gross unrealized losses on marketable securities	$ 79,000	$ 54,000
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	11,702,464	11,702,464
Marketable securities
Debt securities	2,020,563	2,020,563
Equity securities	905,222	905,222
Total marketable securities	2,925,785	2,925,785
Total cash and cash equivalents and marketable securities	14,628,249	14,628,249
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	5,682,780	5,682,780
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	$ 6,019,684	$ 6,019,684