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Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2022
Intangible Assets |  |  |  |  |  |
Indefinite-lived intangible assets |  |  |  | $ 27,200 |  | $ 27,200
Non-cash impairment charge |  |  |  | $ 3,500 | $ 18,000 |
TAM program IPR&D |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |
Non-cash impairment charge | $ 3,500 | $ 14,500 |  |  |  |
CDX-3379 IPR&D |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |
Non-cash impairment charge |  |  | $ 3,500 |  |  |

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