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Stock-Based Compensation - Summary of Stock Option Activity (Detail)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Share-based Payment Arrangement [Abstract]
Options Exercisable, Beginning Balance | shares	2,347,665
Options Exercisable, Ending Balance | shares	2,789,110
Weighted-Average Exercise Price Per Share, Beginning Balance | $ / shares	$ 10.15
Weighted-Average Exercise Price Per Share, Ending Balance | $ / shares	$ 10.23
Options Outstanding, Beginning Balance | shares	4,621,173
Options Outstanding, Granted | shares	774,959
Options Outstanding, Exercised | shares	(61,372)
Options Outstanding, Forfeited or expired | shares	(676,335)
Options Outstanding, Ending Balance | shares	4,658,425
Weighted-Average Exercise Price Per Share, Beginning Balance | $ / shares	$ 10.30
Weighted-Average Exercise Price Per Share, Granted | $ / shares	5.20
Weighted-Average Exercise Price Per Share, Exercised | $ / shares	3.70
Weighted-Average Exercise Price Per Share, Forfeited or expired | $ / shares	10.75
Weighted-Average Exercise Price Per Share, Ending Balance | $ / shares	$ 9.47

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

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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 option holders acquired shares when converting their stock options into shares.

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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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