Warrants - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2020 |
Mar. 31, 2019 |
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| Class Of Warrant Or Right [Line Items] | ||||
| Fair value adjustment of warrants | $ 368,000 | $ 0 | ||
| Series B Convertible Preferred Stock Warrants | ||||
| Class Of Warrant Or Right [Line Items] | ||||
| Warrants additional extended expiration period | 2 years | |||
| Fair value adjustment of warrants | $ 102,000 | $ 0 | $ 368,000 | $ 0 |
| Number of common shares into which each warrant may be exchanged | 5 | 5 | ||
| X | ||||||||||
- Definition Class of warrant or right expiration period. 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 Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. No definition available.
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| X | ||||||||||
- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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