Common Stock - Common Stock Warrants - Additional Information (Detail) - USD ($) |
6 Months Ended | |
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Jun. 30, 2021 |
Jun. 30, 2020 |
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| Class of Warrant or Right [Line Items] | ||
| Proceeds from exercise of warrants | $ 331,000 | $ 589,000 |
| Warrants Issued in December 2019 [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Warrants to purchase common stock | 45,910 | 89,281 |
| Exercise price per unit of warrant | $ 6.600 | $ 6.60 |
| Proceeds from exercise of warrants | $ 300,000 | $ 600,000 |
| 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 | |
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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 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://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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