Convertible Preferred Stock and Stockholders' Equity - Restricted Stock Agreements (Details) - USD ($) $ / shares in Units, $ in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Vesting of restricted Common Stock | $ 6 | $ 6 | ||
| Weighted-average remaining contractual term (in years) | 7 years 10 months 6 days | 7 years 10 months 2 days | ||
| Restricted Stock Agreements | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Shares issued | 27,850,000 | |||
| Share price | $ 0.0001 | |||
| Percentage of shares on which right to repurchase lapses | 20.00% | |||
| Percentage of shares per month on which right to repurchase lapses | 1.67% | |||
| Right to repurchase expiry term | 4 years | |||
| Vesting of restricted Common Stock (in shares) | 497,290 | |||
| Vesting of restricted Common Stock | $ 2,000 | |||
| Vesting period | 4 years | |||
| Weighted-average remaining contractual term (in years) | 8 months 12 days | |||
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- Definition Percentage of shares on which right to repurchase lapses. No definition available.
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- Definition Percentage of shares per month on which right to repurchase lapses. No definition available.
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- Definition Right to repurchase expiry term. No definition available.
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- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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