Equity Awards and Instruments - Options Outstanding Rollforward (Details) - 2020 Incentive Award Plan - Stock Option - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2021
Stock Options
Beginning balance (in shares)	12,842,226
Exercised (in shares)	(5,262,637)
Canceled (in shares)	(243,250)
Ending balance (in shares)	7,336,339
Stock option, exercisable (in shares)	4,228,714
Weighted Average Exercise Price Per Share
Beginning balance (USD per share)	$ 4.87
Exercised (USD per share)	4.35
Canceled (USD per share)	5.53
Ending balance (USD per share)	5.23
Weighted average exercise price, exercisable (USD per share)	$ 4.96
Weighted remaining contractual life (in years)	1 year 9 months 10 days
Shares exercisable, weighted remaining contractual life (in years)	1 year 5 months 19 days
Shares outstanding, aggregate intrinsic value	$ 406,515
Shares exercisable, aggregate intrinsic value	$ 235,458

Share-Based Payment Arrangement By Share-Based Payment Award, Options, Weighted Average Exercise Price Per Share

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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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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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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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