Marketable Securities - Summary of Company's Available for Sale Securities (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 99,596,821	$ 271,553,880
Gross Unrealized Gains	560,797	107,576
Fair Value	$ 100,157,618	$ 271,661,456
Corporate Bonds Maturing 2021
Schedule Of Available For Sale Securities [Line Items]
Effective Maturity	2021	2021
Amortized Cost	$ 99,596,821	$ 126,194,004
Gross Unrealized Gains	560,797	57,854
Fair Value	$ 100,157,618	$ 126,251,858
Corporate Bonds Maturing 2020
Schedule Of Available For Sale Securities [Line Items]
Effective Maturity		2020
Amortized Cost		$ 145,359,876
Gross Unrealized Gains		49,722
Fair Value		$ 145,409,598

Available for sale debt securities effective maturity period.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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