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Common Stock - Additional Information (Detail) - $ / shares | Jun. 30, 2022 | Sep. 30, 2021 | Apr. 09, 2020
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Stockholders Equity Note [Abstract] |  |  |
Warrants of common stock exercise price |  |  | $ 3.98
Common stock, warrants issued | 4,899,497 | 4,899,497 |
Common stock, warrants outstanding | 4,899,497 | 4,899,497 |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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