Share-based compensation arrangement by share-based payment award, offering period.

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- Definition

Share-based compensation arrangement by share-based payment award, offering period, term.

+ References

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
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- Definition

Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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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-Topic 718
-SubTopic 10
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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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- Definition

Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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.

+ References

No definition available.

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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

The highest quantity of shares an employee can purchase under the plan per period.

+ References

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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.

+ References

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- Definition

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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-Publisher FASB
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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

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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-Publisher FASB
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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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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

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Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	7 Months Ended	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value per share of option grants			$ 8.41	$ 2.09
Total intrinsic value of stock options exercised			$ 500	$ 49
Common stock available for future issuance	6,115,466		6,115,466		19,009,189
Unrecognized stock-based compensation cost	$ 16,300		$ 16,300
Remaining weighted average period of unrecognized stock-based compensation cost			3 years
Forecast \| Dr. Song
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash compensation		$ 100
Incremental fair value		$ 1,100
2020 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance	2,759,799		2,759,799
Number of shares available for issuance	2,759,799		2,759,799
Equity Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option vesting period term			Options issued under the Equity Plans vest over a four-year period from the vesting commencement date
Equity Plans \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum term of options granted			10 years
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum contribution percentage of eligible gross compensation	15.00%		15.00%
Maximum number of common stock shares purchase by eligible employees	20,000
Percentage of fair market value of common stock	85.00%
Offering period	2 years
Offering period term			Offerings under the ESPP are approximately two years in duration and consist of four purchase periods that are approximately six months in duration
Common stock available for future issuance	405,000		405,000