Stock-Based Compensation - Summary of stock option, RSU and RSA activity (Details)	3 Months Ended
Mar. 31, 2022 shares
Stock options
Number of Options Outstanding
Beginning balance	4,822,992
Exercised	(185,685)
Forfeited, canceled or expired	(67,564)
Ending balance	4,569,743
Restricted stock units
Number of Restricted Stock Awards
Beginning Balance	2,712,762
Granted	1,885,725
Vested	(241,463)
Forfeited, canceled or expired	(131,038)
Ending Balance	4,225,986
Restricted stock
Number of Restricted Stock Awards
Beginning Balance	4,392
Vested	(4,392)

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Number of non-vested options forfeited.

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

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