Share-Based Compensation - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, Outstanding at beginning of period	4,132,123	3,505,119
Number of shares, Granted	1,141,726
Number of shares, Exercised	(87,786)	(181,318)
Number of shares, Cancelled or forfeited	(10,828)
Number of shares, Outstanding at end of period	5,175,235	3,323,801
Weighted average exercise price, Outstanding at beginning of period	$ 6.39	$ 2.07
Weighted average exercise price, Granted	36.50
Weighted average exercise price, Exercised	2.09	1.79
Weighted average exercise price, Cancelled or forfeited	8.78
Weighted average exercise price, Outstanding at end of period	$ 13.10	$ 2.09

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

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