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Convertible Preferred Stock and Stockholders' Equity (Deficit) - Summary of Outstanding Convertible Preferred Stock (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 29, 2020	Dec. 31, 2019	Jul. 31, 2019
Temporary Equity [Line Items]
Shares Authorized			142,150,096
Shares Outstanding	0	0	117,809,883
Net Carrying Value			$ 131,363
Liquidation Preference			$ 148,592
Series A
Temporary Equity [Line Items]
Shares Authorized			2,280,000
Shares Outstanding			2,280,000
Net Carrying Value			$ 2,280
Liquidation Preference			$ 2,280
Series A-2
Temporary Equity [Line Items]
Shares Authorized			2,018,561
Shares Outstanding			2,018,561
Net Carrying Value			$ 1,605
Liquidation Preference			$ 1,740
Series B
Temporary Equity [Line Items]
Shares Authorized			76,078,535
Shares Outstanding			76,078,535
Net Carrying Value			$ 74,926
Liquidation Preference			$ 87,729
Series C
Temporary Equity [Line Items]
Shares Authorized			61,773,000	61,773,000
Shares Outstanding			37,432,787
Net Carrying Value			$ 52,552
Liquidation Preference			$ 56,843

X

- Definition

Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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The aggregate liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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