Net Loss Per Common Share - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Apr. 30, 2019
Earnings Per Share [Abstract]
Description of warrants issued	Warrants issued in April 2019, discussed further in Note 9, participate on a one-for-one basis with common stock in the distribution of dividends, if and when declared by the Board of Directors (the “Board”) on the Company’s Common Stock
Warrants issued for common stock dividends			1
Income allocated to warrants	$ 0	$ 0