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Stock-Based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Time-Based Option Shares
Outstanding at January 1, 2021 (in shares) | shares	3,892,936
Options exercised (in shares) | shares	(537,889)
Options cancelled/forfeited (in shares) | shares	(11,000)
Outstanding at March 31, 2021 (in shares) | shares	3,344,047
Vested and expected to vest, outstanding (in shares) | shares	3,344,047
Share-based payment award, options, exercisable (in shares) | shares	1,715,358
Weighted Average Exercise Price
Outstanding, beginning balance (in USD per share) | $ / shares	$ 11.58
Options exercised (in USD per share) | $ / shares	12.05
Options cancelled/forfeited (in USD per share) | $ / shares	11.50
Outstanding, ending balance (in USD per share) | $ / shares	11.50
Vested and expected to vest (in USD per share) | $ / shares	11.50
Vested and exercisable (in USD per share) | $ / shares	$ 10.49
Option shares outstanding, weighted average remaining contractual life in years	6 years 9 months 18 days
Vested and expected to vest, weighted average remaining contractual life in years	6 years 9 months 18 days
Vested and exercisable, weighted average remaining contractual life in years	6 years
Option shares outstanding, aggregate intrinsic value | $	$ 117,946,252
Option shares vested and expected to vest, aggregate intrinsic value | $	117,946,252
Option shares vested and exercisable, aggregate intrinsic value | $	$ 62,231,385

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

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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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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. 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 options outstanding that can 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 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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