Maximum annual increase of common stock reserved for issuance.

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- Definition

Number of shares of common stock issuable upon exercise of outstanding options.

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No definition available.

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Share based compensation arrangement by share based payment award common stock issuable upon exercise of outstanding options.

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No definition available.

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- Definition

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

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

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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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

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

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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).

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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

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

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- Definition

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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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 02, 2020	Jul. 31, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for issuance			11,554,677		11,554,677		44,793,329
Stock-based compensation expense			$ 3,860,000	$ 596,000	$ 4,998,000	$ 2,268,000
Number of incentive stock option granted					3,616,945
Weighted average grant-date fair value of stock options granted			$ 13.01		$ 12.86
Common stock, par value			$ 0.0001		$ 0.0001		$ 0.0001
Restricted Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted					171,204	2,191,272
Unrecognized stock-based compensation cost			$ 7,200,000		$ 7,200,000
Weighted average period of cost expected to be recognized					2 years 9 months 18 days
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period of cost expected to be recognized					3 years 8 months 19 days
Number of incentive stock option granted					3,616,945	0
Stock options vesting period					4 years
Stock options contractual term					10 years
Unrecognized stock-based compensation expenses			$ 44,300,000		$ 44,300,000
2018 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares granted			6,715,415		6,715,415
Number of shares of common stock issuable upon exercise of outstanding options			98,643		98,643
Reserved shares of common stock for issuance			0		0
Stock-based compensation expense					$ 1,600
2020 Stock Option and Grant Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for issuance			4,338,284		4,338,284
Common stock authorized for issuance	8,008,734
Cumulative increase in number shares reserved for issuance, percentage	5.00%
Common stock issuable upon exercise of outstanding options					3,563,262
2020 Stock Option and Grant Plan \| Restricted Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted					107,188
2020 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for issuance		611,354
Cumulative increase in number shares reserved for issuance, percentage		1.00%
Common stock, par value		$ 0.0001
Annual increase in number of shares reserved for issuance		1,222,707