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Private Placements and Public Offering (Details) - USD ($) | 1 Months Ended |  |
--- | --- | --- | ---
Jan. 31, 2021 | Jan. 25, 2021 | Mar. 28, 2019
2019 Warrants |  |  |
Class of Stock [Line Items] |  |  |
Number of additional shares from warrants (in shares) |  |  | 2,500,000
Initial exercise price of warrants (in dollars per share) |  |  | $ 7.00
Canaccord Genuity LLC | ATM Offering |  |  |
Class of Stock [Line Items] |  |  |
Equity Distribution Agreement, maximum aggregate amount authorized for offer or sale |  | $ 40,000,000 |
Number of shares issued (in shares) | 1,516,073 |  |
Purchase price (in dollars per share) | $ 20.11 |  |
Proceeds from sale of stock | $ 29,400,000 |  |

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