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

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of shares issued 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		12 Months Ended
	Apr. 15, 2019	Dec. 31, 2021	Dec. 31, 2020	Aug. 31, 2021
Aggregate intrinsic value of stock options exercised		$ 16.3	$ 2.9
Weighted average grant-date fair value of stock options granted		$ 18.63	$ 7.91
Unrecognized compensation cost related to unvested employee and director stock-based awards		$ 20.9
Weighted average period for unrecognized compensation cost		2 years 8 months 12 days
Performance-based Vesting [Member]
Shares granted to employees		0
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		1,583,925
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		320,596
Purchase price of common stock, percent	85.00%
Number of shares issued		27,849
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		738,700