Income Taxes - Schedule of Deferred Tax Assets (Detail) - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Net operating loss carryforward	$ 20,123,621	$ 14,562,024
Research and development credit carryforward	1,164,895	1,804,233
Orphan drug credit	2,002,559
Stock options - NQSOs	5,267,351	5,877,971
Accruals and other temporary differences	595,418	825,696
Gross deferred tax assets	29,153,844	23,069,924
Deferred tax valuation allowance	$ (29,153,844)	(23,069,924)
Net deferred taxes		$ 0