Stock-based Compensation - Schedule of Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Options, Outstanding, Beginning	17,801,986
Number of Options, Exercised	(701,139)
Number of Options, Forfeited	(27,230)
Number of Options, Outstanding, Ending	17,073,617	17,801,986
Number of Options,Vested and exercisable	10,571,302
Number of Options,Vested and expected to vest	17,073,617
Weighted- Average Exercise Price, Outstanding, Beginning	$ 0.36
Weighted- Average Exercise Price, Exercised	0.28
Weighted- Average Exercise Price, Forfeited	0.55
Weighted- Average Exercise Price, Outstanding, Ending	0.36	$ 0.36
Weighted- Average Exercise Price, Vested and exercisable as of March 31, 2021	0.28
Weighted- Average Exercise Price, Vested and expected to vest as of March 31, 2021	$ 0.36
Weighted- Average Remaining Contractual Life (Years)	8 years 14 days	8 years 3 months 7 days
Weighted- Average Remaining Contractual Life (Years)	7 years 8 months 1 day
Weighted- Average Remaining Contractual Life (Years)	8 years 14 days
Aggregate Intresic Value,Outstanding, Beginning	$ 140,560
Aggregate Intresic Value,Outstanding, Ending	191,876	$ 140,560
Aggregate Intresic Value, Vested and exercisable as of March 31, 2021	119,671
Aggregate Intresic Value,Vested and expected to vest as of March 31, 2021	$ 191,876

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

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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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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. 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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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. 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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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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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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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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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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Number of share options (or share units) exercised during the current period.

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