Stock-Based Compensation - Summary of Stock-based Awards Activity Under the 2008 Plan, 2015 Plan and Inducement Plan (Detail)	9 Months Ended
Sep. 30, 2024 shares
Share-Based Payment Arrangement [Abstract]
Stock Options, Outstanding at beginning balance	9,633,067
Stock Options, Granted	440,000
Stock Options, Exercised	(433,047)
Stock Options, Forfeited	(161,524)
Stock Options, Outstanding at ending balance	9,478,496
RSUs, Outstanding at beginning balance	3,488,250
RSUs, Granted	447,500
RSUs, Vested	(79,688)
RSUs, Forfeited	(102,500)
RSUs, Outstanding at ending balance	3,753,562

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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Number of share options (or share units) exercised during the current period.

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