Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Assets:
Fair value measurements of assets	$ 159,574,963	$ 271,661,456
Fair Value, Measurements, Recurring | Corporate Bonds
Assets:
Fair value measurements of assets	159,574,963	271,661,456
Level 2 | Fair Value, Measurements, Recurring | Corporate Bonds
Assets:
Fair value measurements of assets	$ 159,574,963	$ 271,661,456