Stock Option and Grant Plan - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Number of Options, Outstanding	8,480,950
Number of Options, Granted	2,557,569
Number of Options, Exercised	(822,820)
Number of Options, Cancelled or forfeited	(266,882)
Number of Options, Outstanding	9,948,817		8,480,950
Number of Options, Options exercisable	3,525,568
Number of Options, Options unvested	6,423,249
Weighted average grant-date fair value of options granted during the period	$ 20.74
Weighted-Average Exercise Price, Outstanding	13.19
Weighted-Average Exercise Price, Granted	31.36
Weighted-Average Exercise Price, Exercised	6.57
Weighted-Average Exercise Price, Cancelled or forfeited	17.72
Weighted-Average Exercise Price, Outstanding	18.28		$ 13.19
Weighted-Average Exercise Price, Options exercisable	11.49
Weighted-Average Exercise Price, Options unvested	$ 22.01
Weighted- Average Remaining Contractual Term (in years), Outstanding	8 years		8 years 2 months 12 days
Weighted- Average Remaining Contractual Term (in years), Options exercisable	7 years
Weighted- Average Remaining Contractual Term (in years), Options unvested	8 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding	$ 201,765
Aggregate intrinsic value, exercised	18,360	$ 6,000
Aggregate Intrinsic Value, Outstanding	44,547		$ 201,765
Aggregate Intrinsic Value, Options exercisable	26,785
Aggregate Intrinsic Value, Options unvested	$ 17,762

Share-based compensation arrangement by share-based payment award options unvested intrinsic value.

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Share-based compensation arrangement by share-based payment award options unvested weighted average remaining contractual term.

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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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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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- 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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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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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of non-vested options outstanding.

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Weighted average grant-date fair value of non-vested options outstanding.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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