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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 15, 2021 | Oct. 04, 2021 | Oct. 04, 2021 | Sep. 30, 2021 | Sep. 23, 2021 | Sep. 15, 2021 | Jun. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Oct. 31, 2021 | Jul. 14, 2021 | Dec. 31, 2020
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split |  |  |  |  |  | 1-for-10 |  |  |  |  |  |
Common stock, number of shares available for sale |  |  |  |  | 41,637 |  |  |  |  |  |  |
Common stock, par value |  |  |  | $ 0.001 | $ 0.001 |  |  | $ 0.001 | $ 0.001 |  |  | $ 0.001
Percentage of gross proceeds from sale of common stock |  |  |  |  | 3.00% |  |  |  |  |  |  |
Common stock, shares issued |  |  |  | 9,253,238 |  |  |  | 9,253,238 | 9,253,238 |  |  | 6,631,039
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued | 6,813,183 |  |  |  |  |  |  |  |  |  |  |
Net proceeds received from sale of common stock | $ 14,283 |  |  |  |  |  |  |  |  |  |  |
Sale of stock, average price per share | $ 2.10 |  |  |  |  |  |  |  |  |  |  |
June 2021 ATM Program |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, number of shares available for sale |  |  |  |  |  |  | 10,000 |  |  |  |  |
Common stock, par value |  |  |  |  |  |  | $ 0.001 |  |  |  |  |
Percentage of gross proceeds from sale of common stock |  |  |  |  |  |  | 3.00% |  |  |  |  |
Common stock, shares issued |  |  |  |  |  |  |  |  |  |  | 1,820,785 |
Net proceeds received from sale of common stock |  |  |  |  |  |  |  | $ 8,363 | $ 8,363 |  |  |
Sale of stock, average price per share |  |  |  |  |  |  |  |  |  |  | $ 4.59 |
ATM Program |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued |  |  |  | 735,003 |  |  |  | 735,003 | 735,003 |  |  |
Net proceeds received from sale of common stock |  |  |  | $ 9,046 |  |  |  |  |  |  |  |
Sale of stock, average price per share |  |  |  | $ 2.69 |  |  |  | $ 2.69 | $ 2.69 |  |  |
ATM Program | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, number of shares available for sale |  |  |  |  |  |  |  |  |  | 24,800,000 |  |
Net proceeds received from sale of common stock |  | $ 1,291 | $ 1,974 |  |  |  |  |  |  |  |  |

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