Stockholders' Equity - Summary of Stock Option Activity (Details) - Equity incentive plan - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
Jun. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options, beginning balance	6,444,744
Number of options, granted	2,139,718
Number of options,forfeited	(380,184)
Number of options, exercised	0
Number of options, ending balance	8,204,278
Number of options, vested and expected to vest	8,204,278
Number of options, vested and exercisable	2,617,257
Weighted average exercise price, beginning balance	$ 5.28
Weighted average exercise price, granted	1.80
Weighted average exercise price, forfeited	4.52
Weighted average exercise price, ending balance	4.40
Weighted average exercise price, options vested and expected to vest	4.40
Weighted average exercise price, options vested and exercisable	$ 4.91
Weighted average contractual term outstanding, ending balance	8 years 6 months
Weighted average remaining contractual term, options vested and expected to vest	8 years 6 months
Weighted average remaining contractual term, options vested and exercisable	7 years 1 month 6 days
Aggregate intrinsic value beginning balance	$ 613,190
Aggregate intrinsic value ending balance	148,560
Aggregate intrinsic value, options vested and expected to vest	148,560
Aggregate intrinsic value, options vested and exercisable	$ 117,365

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

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Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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