Fair value of common stock price per share.

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

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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No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ 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 (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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Stock-Based Compensation - Summary of Assumptions used in Black-Scholes Option Pricing Model (Details) - $ / shares			3 Months Ended		9 Months Ended
	Jul. 02, 2019	Apr. 03, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value per share of common stock	$ 10.25	$ 24.32
Service-Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate			0.41%	1.82%	0.74%	2.23%
Expected term (in years)			6 years 3 months	6 years 3 months	6 years 3 months	6 years 3 months
Expected volatility			68.63%	67.41%	68.13%	67.60%
Expected dividend yield			0.00%	0.00%	0.00%	0.00%
Fair value per share of common stock			$ 15.76	$ 10.25	$ 13.87	$ 14.85
Performance-Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate				1.89%		1.89%
Expected term (in years)				6 years 3 months		6 years 3 months
Expected volatility				67.45%		67.45%
Expected dividend yield				0.00%		0.00%
Fair value per share of common stock				$ 10.25		$ 10.25
Award Repricing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate					1.86%
Expected term (in years)					5 years 9 months 14 days
Expected volatility					66.56%
Expected dividend yield					0.00%
Fair value per share of common stock					$ 10.25