Share-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options, Outstanding ‑ January 1, 2021	2,321
Stock Options, Granted	858
Stock Options, Forfeited/canceled	(62)
Stock Options, Exercised	(209)
Stock Options, Outstanding ‑ March 31, 2021	2,908
Stock Options Exercisable - March 31, 2021	1,294
Weighted Average Exercise Price, Outstanding ‑ January 1, 2021	$ 1.82
Weighted Average Exercise Price, Granted	20.55
Weighted Average Exercise Price, Forfeited/canceled	0.23
Weighted Average Exercise Price, Exercised	1.96
Weighted Average Exercise Price, Outstanding ‑ March 31, 2021	7.36
Weighted Average Exercise Price, Exercisable - March 31, 2021	$ 3.97
Weighted Average Contractual Life (Years), Outstanding ‑ January 1, 2021	8 years 1 month 6 days	7 years 4 months 24 days
Weighted Average Contractual Life (Years), Granted	9 years 10 months 24 days
Weighted Average Contractual Life (Years), Exercisable - March 31, 2021	7 years
Aggregate Intrinsic Value, Outstanding ‑ January 1, 2021	$ 42,580
Aggregate Intrinsic Value, Granted	285
Aggregate Intrinsic Value, Outstanding ‑ March 31, 2021	37,655
Aggregate Intrinsic Value, Exercisable - March 31, 2021	$ 21,149

Share based compensation arrangement by share based payment award options granted aggregate intrinsic value.

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Share based compensation arrangement by share based payment award options granted weighted average remaining contractual term1.

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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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For presentations that combine terminations, 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 or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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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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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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