Common Stock - Additional Information (Details) $ / shares in Units, $ in Thousands |
Nov. 06, 2019
USD ($)
$ / shares
shares
|
Sep. 10, 2019
USD ($)
shareholder
$ / shares
shares
|
Dec. 31, 2019
$ / shares
|
Dec. 31, 2018
$ / shares
|
Sep. 10, 2018
$ / shares
|
|---|---|---|---|---|---|
| Class of Stock [Line Items] | |||||
| Common stock, par value | $ / shares | $ 0.001 | $ 0.001 | |||
| Private placement | |||||
| Class of Stock [Line Items] | |||||
| Common stock, par value | $ / shares | $ 0.001 | $ 0.001 | |||
| Issue price per share | $ / shares | $ 0.053525 | $ 0.014 | |||
| Issuance of common stock, net of issuance costs (in shares) | shares | 39,999,998 | 3,269,500 | |||
| Cash proceeds | $ 560 | $ 175 | |||
| Number of shareholders | shareholder | 2 | ||||
| Additional shares issued on common stock | shares | 39,999,998 | 9,230,500 | |||
| Issuance costs | $ 56 | $ 5 | |||
| Maximum | Private placement | |||||
| Class of Stock [Line Items] | |||||
| Value of common stock offered on initial closing date | 175 | ||||
| Value of common stock offered on subsequent closing date | $ 575 |
| X | ||||||||||
- Definition The amount represents additional shares issued on common stock. No definition available.
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| X | ||||||||||
- Definition Number of common stock agreed to issue on initial closing date. No definition available.
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| X | ||||||||||
- Definition Number of common stock agreed to issue on subsequent closing date. No definition available.
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| X | ||||||||||
- Definition Number of shareholders invested in a private placement. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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