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Fair Value - Additional Information (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 02, 2020 | Sep. 30, 2020 | Dec. 31, 2020
Lincoln Park [Member] | 2020 Purchase Agreement [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Commitment shares issued as commitment fee | 180,701 |  |
Change in fair value of commitment shares |  | $ 18,000 |
Series U Warrants [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Reclassification of number of warrants to equity from amendment of warrants |  |  | 3,522,500
Series T Warrants [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Warrants expired unexercised date |  |  | 2021-01

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