v3.20.1
Summary of Significant Accounting Policies - Schedule of Assets Measured on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Assets:    
Cash and cash equivalents $ 38,524,536 $ 62,614,010
Total assets 38,524,536 62,614,010
Level 1 [Member]    
Assets:    
Cash and cash equivalents 38,524,536 62,614,010
Total assets $ 38,524,536 $ 62,614,010