Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Purchase price of common stock expressed as a percentage of its fair value.

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Apr. 15, 2019	Mar. 31, 2022	Aug. 31, 2021
Unrecognized compensation cost related to unvested employee and director stock-based awards		$ 24.6
Weighted average period for unrecognized compensation cost		3 years 1 month 6 days
Common Stock \| Employees and Directors [Member]
Options granted		880,910
Share-based compensation arrangement by share-based payment award, options, grants in period, weighted average grant date fair value		$ 7.11
2019 Stock Plan [Member]
Share-based compensation arrangement by share-based payment award, number of shares authorized	3,428,571
Share based compensation arrangement by share based payment award number of shares available for grant		890,558
2019 Stock Plan [Member] \| From 2014 Plan [Member]
Share-based compensation arrangement by share-based payment award, number of shares authorized	1,595,189
2019 Employee Stock Purchase Plan [Member]
Share-based compensation arrangement by share-based payment award, number of shares authorized		371,142
Share based compensation arrangement by share based payment award number of shares available for grant		308,131
Purchase price of common stock, percent	85.00%
Number of shares issued		12,465
2021 Inducement Plan [Member] \| Common Stock
Share-based compensation arrangement by share-based payment award, number of shares authorized			1,000,000
Share based compensation arrangement by share based payment award number of shares available for grant		580,200