Stock-based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 3,786,000	$ 2,756,000
Share based compensation expense recognized tax benefit	$ 0	0
Shares of common stock held by employees subject to repurchase	105,692		163,855
Aggregate price for share repurchase	$ 192,000		$ 276,000
Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	3,400,000	$ 2,700,000
Share based payment unamortized share based payment expenses	$ 37,800,000
Share based payment expenses amortized over a weighted average period	2 years 9 months 3 days
Share based payments weighted-average grant date fair value	$ 2.12	$ 17.33
Common stock issued upon exercise of stock options	0
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 76,000	$ 90,000
Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 306,000	$ 0
Purchase of common stock	0

Aggregate price for share repurchase.

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- Definition

Stock issues early period share stock options exercised.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average grant-date fair value of options vested.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Number of shares of common stock subject to repurchase or cancellation determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. Common stock subject to repurchase are outstanding common shares that are contingently returnable (that is, subject to recall).

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