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Subsequent Events - Additional Information (Details) - Subsequent Events - USD ($) $ in Thousands | 1 Months Ended |
--- | --- | ---
Feb. 28, 2021 | Jan. 31, 2021
WuXi Advanced Therapies | Wuxi Agreement |  |
Subsequent Event [Line Items] |  |
Early termination fee |  | $ 1,500
CHOP | Research Service Agreement |  |
Subsequent Event [Line Items] |  |
Total cost | $ 670 |

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- Definition Expected research service agreement cost. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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