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v3.20.1

Convertible Notes - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2018 | May 31, 2018 | Dec. 31, 2018 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible preferred stock on milestone closing of convertible notes |  |  | $ 12,567 |
Preferred stock, outstanding shares |  |  | 0 | 0
Series A Preferred |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible preferred stock issued | 3,146,551 |  |  |
Proceeds from convertible preferred stock | $ 12,744 |  | $ 12,744 |
Series A-1 Preferred |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible preferred stock on milestone closing of convertible notes | $ 12,567 |  |  |
Convertible preferred stock issued | 4,553,452 |  |  |
Conversion price per share | $ 2.76 |  | $ 2.76 |
Accrued interest | $ 409 |  |  |
Conversion of preferred stock to convertible preferred stock | 2,819,267 |  |  |
Series A-2 Preferred |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Conversion price per share | $ 2.76 |  | $ 2.76 |
Conversion of preferred stock to convertible preferred stock | 1,873,777 |  |  |
Convertible Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of debt |  | $ 12,535 |  |
Debt instrument, stated interest rate |  | 7.50% |  |
Proceeds from issuance of convertible preferred stock on milestone closing of convertible notes |  | $ 12,567 |  |
Accrued interest |  |  | $ 409 |
Fair value of convertible notes issued |  | 12,535 |  |
Fair value, debt instrument volatility rate | 71.00% |  |  |
Fair value, debt instrument term | 1 year 3 months 18 days |  |  |
Fair value, debt instrument weighted average discount rate for lack of marketability | 35.00% |  |  |
Fair value adjustments |  |  | $ 6,244 |
Convertible Notes | General and Administrative Expense |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt issuance costs |  | 53 |  |
Convertible Notes | Series A-1 Preferred |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Share price | $ 3.39 |  |  |
Convertible Notes | Series A-2 Preferred |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Share price | $ 3.39 |  |  |
Penn | Convertible Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of debt |  | $ 5,000 |  |

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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and 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. + 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(27)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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