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Equity Incentive Plans - Summary of Restricted Stock Unit Activity (Details) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Weighted-Average Grant Date Fair Value per Share
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Granted	$ 7.81	$ 27.67
Restricted Stock Units (RSUs)
Weighted-Average Grant Date Fair Value per Share
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Granted	$ 12.17	$ 44.10
Restricted Stock Units (RSUs) | 2019 Equity Incentive Plan
Restricted Stock Units Outstanding
Restricted Stock Units Outstanding, Nonvested Outstanding, Beginning Balance	1,211,191
Restricted Stock Units Outstanding, Granted	4,953,409
Restricted Stock Units Outstanding, Forfeited or cancelled	(532,911)
Restricted Stock Units Outstanding, Vested	(141,185)
Restricted Stock Units Outstanding, Nonvested Outstanding, Beginning Balance	5,490,504
Weighted-Average Grant Date Fair Value per Share
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Beginning Balance	$ 37.41
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Granted	12.17
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Forfeited or cancelled	17.37
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Vested	44.57
Weighted-Average Grant Date Fair Value per Share, Nonvested Outstanding, Ending Balance	$ 16.40

X

- Definition

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

+ 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
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
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- Definition

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).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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).

+ References

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-Publisher FASB
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- Definition

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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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-Publisher FASB
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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