Operating Leases -Schedule of Supplemental Balance Sheet related To Lease (Detail) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Disclosure of Operating Leases [Line Items]
Operating lease right-of-use assets	$ 12,167	$ 793,252
Other current liabilities	114,563	300,518
Operating lease liabilities, net of current portion		$ 647,532
Total operating lease liabilities	$ 114,563
Weighted average remaining lease term	3 months 18 days
Weighted average discount rate	3.68%