Warrants - Additional Information (Details) - $ / shares |
Sep. 30, 2019 |
Jan. 31, 2019 |
Jan. 26, 2019 |
Jan. 14, 2019 |
Jan. 09, 2019 |
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| Class of Warrant or Right [Line Items] | |||||
| Warrants, number of shares of common stock with right to purchase (in shares) | 31,111 | 31,111 | |||
| Warrants, exercise price (usd per share) | $ 104.18 | $ 7.43 | $ 7.43 | ||
| H.C. Wainwright, underwriter | |||||
| Class of Warrant or Right [Line Items] | |||||
| Warrants, number of shares of common stock with right to purchase (in shares) | 35,507 | 35,507 | 444,444 | ||
| Warrants, exercise price (usd per share) | $ 7.59 | $ 7.59 | $ 6.75 | ||
| 2017 Offering | |||||
| Class of Warrant or Right [Line Items] | |||||
| Warrants, number of shares of common stock with right to purchase (in shares) | 122,500 |
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- Definition Exercise price per share or per unit of warrants or rights outstanding. 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 Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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