Subsequent events - Additional Information (Detail) $ / shares in Units, $ in Millions |
Oct. 06, 2020
USD ($)
$ / shares
shares
|
|---|---|
| Sale of Stock, Number of Shares Issued in Transaction | 3,709,676 |
| common stock equivalents | 2,666,644 |
| Gross proceeds from issue of stock | $ | $ 11.5 |
| Proceeds from Issuance Initial Public Offering | $ | $ 9.9 |
| IPO [Member] | |
| Sale of Stock, Number of Shares Issued in Transaction | 3,225,806 |
| Sale of stock issue price per share | $ / shares | $ 3.10 |
| Over-Allotment Option [Member] | |
| Sale of Stock, Number of Shares Issued in Transaction | 483,870 |
| Pre-funded warrants [Member] | |
| Sale of Stock, Number of Shares Issued in Transaction | 559,162 |
| Sale of stock issue price per share | $ / shares | $ 3.09 |
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares | $ 0.01 |
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- Definition Common stock equivalents No definition available.
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- Definition Gross proceeds from issue of stock No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. No definition available.
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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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