Fair Value Measurements - Summary of Company's Available for Sale Securities (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 158,495,156	$ 271,553,880
Gross Unrealized Gains	1,081,011	107,576
Gross Unrealized Losses	(1,204)
Fair Value	159,574,963	$ 271,661,456
Corporate Bonds One Maturing 2020-2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	135,813,140
Gross Unrealized Gains	811,850
Gross Unrealized Losses	(1,204)
Fair Value	$ 136,623,786
Corporate Bonds One Maturing 2020-2021 \| Minimum
Schedule Of Available For Sale Securities [Line Items]
Effective Maturity	2020
Corporate Bonds One Maturing 2020-2021 \| Maximum
Schedule Of Available For Sale Securities [Line Items]
Effective Maturity	2021
Corporate Bonds Maturing 2021
Schedule Of Available For Sale Securities [Line Items]
Effective Maturity	2021	2021
Amortized Cost	$ 22,682,016	$ 126,194,004
Gross Unrealized Gains	269,161	57,854
Fair Value	$ 22,951,177	$ 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

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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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