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Weighted average remaining life of warrants or rights outstanding.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of warrants or rights outstanding.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options outstanding, including both vested and non-vested options.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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Share-Based Compensation - Additional Information (Details)	1 Months Ended		12 Months Ended
	Jul. 31, 2021 USD ($) employee shares	Nov. 30, 2020 USD ($) employee shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Aug. 03, 2018 shares	Dec. 03, 2010 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding to purchase shares of common stock (in shares) \| shares			21,843,781	25,087,416	14,936,726
Warrants outstanding (in shares) \| shares			1,100,000	900,000
Share-based payments expense			$ 22,000,000	$ 12,000,000	$ 9,100,000
Unrecognized compensation expense related to non-vested share options			12,900,000
Exercised			7,731,175	2,421,499	0
Total fair value of vested shares			$ 8,400,000	11,800,000	8,500,000
Weighted average exercise price of warrants (in dollars per share) \| $ / shares			$ 4.00
Weighted average remaining life of warrants			7 months 9 days
Granted date fair value of restricted shares	$ 12,400,000
2010 Stock Incentive Plan ("the Plan")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares) \| shares						56,800,000	31,500,000
Number of options available for issuance (in shares) \| shares			17,400,000
Restricted shares granted (in shares) \| shares		100,000
Number of employees and directors granted shares \| employee		1
Amount of grant date fair value of the restricted shares		$ 100,000
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period for recognition related to non-vested stock options			1 year 4 months 24 days
Cash received from options exercised			$ 8,400,000	$ 1,700,000	$ 0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares) \| shares	5,000,000		5,025,000
Number of employees and directors granted shares \| employee	7
Unrecognized compensation cost related to unvested restricted shares			$ 0