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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2022 | Aug. 31, 2022 | Mar. 31, 2021 | May 31, 2016 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 07, 2020 | Apr. 12, 2019
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Incremental borrowing rate on operating leases |  | 6.00% |  |  |  | 6.00% |  |  |
Operating and variable lease cost |  |  |  |  |  | $ 727 | $ 503 |  |
Contractual obligation |  | $ 4,500 |  |  |  | $ 4,500 |  |  |
Asset purchase agreement, royalties as percent of aggregated net sales |  |  |  |  | 4.40% |  |  |  |
Common stock, shares issued (in shares) |  | 39,307,286 |  |  |  | 39,307,286 | 26,335,418 |  | 120,070
Common stock issued |  | $ 4 |  |  |  | $ 4 | $ 3 |  | $ 1,500
4SC royalty settlement |  |  |  |  |  | $ 0 | $ 17,250 |  |
Immunic AG |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Asset purchase agreement, royalties as percent of aggregated net sales | 4.40% |  |  |  |  |  |  |  |
4SC royalty settlement | $ 17,250 |  |  |  |  |  |  |  |
Royalty settlement agreement, cash payment, percent | 50.00% |  |  | 50.00% |  |  |  |  |
Royalty settlement agreement, shares payment, percent | 50.00% |  |  | 50.00% |  |  |  |  |
Grafelfing, Germany |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Lease term (in years) |  |  |  |  |  |  |  | 5 years |
Increase in operating lease, right-of-use asset |  |  | $ 642 | $ 435 |  |  |  |  |
New York City |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Rent holiday period |  |  |  |  |  | 6 months |  |  |
Increase in operating lease, right-of-use asset |  | $ 332 |  |  |  |  |  |  |
Incremental borrowing rate on operating leases |  | 8.00% |  |  |  | 8.00% |  |  |

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