Stock-Based Compensation - Summary of Stock Option Activity (Detail)	9 Months Ended
Sep. 30, 2022 $ / shares shares
Share-based Payment Arrangement [Abstract]
Options Exercisable, Beginning Balance \| shares	2,789,110
Options Exercisable, Ending Balance \| shares	3,314,828
Weighted-Average Exercise Price Per Share, Beginning Balance \| $ / shares	$ 10.23
Weighted-Average Exercise Price Per Share, Ending Balance \| $ / shares	$ 9.88
Options Outstanding, Beginning Balance \| shares	4,658,405
Options Outstanding, Granted \| shares	1,609,000
Options Outstanding, Forfeited or expired \| shares	(420,606)
Options Outstanding, Ending Balance \| shares	5,846,799
Weighted-Average Exercise Price Per Share, Beginning Balance \| $ / shares	$ 9.47
Weighted-Average Exercise Price Per Share, Granted \| $ / shares	1.12
Weighted-Average Exercise Price Per Share, Forfeited or expired \| $ / shares	7.05
Weighted-Average Exercise Price Per Share, Ending Balance \| $ / shares	$ 7.35

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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