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v3.21.1

Capital Stock - Additional Information (Details) - USD ($) |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 21, 2021 | Dec. 10, 2020 | Dec. 06, 2020 | Oct. 21, 2020 | Oct. 01, 2019 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Conversion of convertible preferred stock, shares (in shares) |  |  |  |  | 1,315,790 |  |  |  |
Issuance of stock for services |  |  |  |  |  | $ 274,000 |  |  |
Issuance of common shares from warrant exercise (in shares) |  |  |  | 521,500 |  |  |  |  |
Warrant term |  |  |  | 2 years |  |  |  |  |
Exercise price (in dollars per share) |  |  |  |  |  | $ 4.85 |  | $ 4.85 | $ 0.01
Warrant exercises |  |  |  |  |  | 0 |  |  |
General and administrative expense |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Accrued professional fees |  |  |  |  |  | $ 274,000 |  |  |
Warrants |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common shares from warrant exercise (in shares) |  |  | 625,000 |  |  |  |  |  |
Warrant term |  |  | 2 years |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 5.49 | $ 4.08 |  |  |  |  |
Fair value of SVB Warrant |  |  | $ 2,635,425 | $ 1,334,087 |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Conversion of convertible preferred stock, shares (in shares) |  |  |  |  |  | 18,846,411 | 50,000 |  |
Issuance of shares for professional service fees (in shares) | 21,008 | 50,000 |  |  |  | 21,008 |  |  |
Issuance of stock for services | $ 100,000 | $ 348,000 |  |  |  |  |  |  |

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