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Nature of Business (Details) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended | 29 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Dec. 31, 2022 | May 31, 2021
Liquidity |  |  |  |  |  |
Net proceeds from issuance of shares |  | $ 117,079 | $ 0 |  |  |
Accumulated deficit |  | $ 1,212,476 |  | $ 1,212,476 | $ 1,078,131 |
June 2023 Offering |  |  |  |  |  |
Liquidity |  |  |  |  |  |
Number of common stock issued (in shares) | 12,500,000 |  |  |  |  |
Net proceeds from issuance of shares | $ 117,100 |  |  |  |  |
At The Market Offering |  |  |  |  |  |
Liquidity |  |  |  |  |  |
Number of common stock issued (in shares) |  |  |  | 0 |  |
Sales agreement amount of aggregate sale proceeds of common stock agreed to be issued |  |  |  |  |  | $ 300,000

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