Common Stock - Common Stock Warrants - Additional Information (Detail) - USD ($) |
9 Months Ended | |
|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
|
| Class of Warrant or Right [Line Items] | ||
| Proceeds from exercise of warrants | $ 339,000 | $ 3,080,000 |
| Warrants Issued in December 2019 [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Warrants to purchase common stock | 47,084 | 467,126 |
| Exercise price per unit of warrant | $ 6.600 | $ 6.60 |
| Proceeds from exercise of warrants | $ 300,000 | $ 3,100,000 |
| Warrants Issued in April 2020 [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Warrants to purchase common stock | 3,750 | |
| Exercise price per unit of warrant | $ 7.32 | |
| Proceeds from exercise of warrants | $ 27,450 | |
| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| 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.
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|