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Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, € in Thousands | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) Segment $ / shares | Sep. 30, 2025 EUR (€) | Dec. 31, 2024 USD ($) $ / shares | Sep. 30, 2024 $ / shares | May 03, 2023 $ / shares
Accounting Policies [Line Items] |  |  |  |  |
Ordinary shares, par value | $ / shares | $ 0.01 |  | $ 0.01 |  | $ 0.01
Allowance for credit losses | $ 0 |  |  |  |
Number of business segments | Segment | 1 |  |  |  |
October 2020 Offering |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Ordinary shares, par value | $ / shares | $ 0.01 |  |  |  |
June 3, 2020 SPA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Ordinary shares, par value | $ / shares | 0.01 |  |  | $ 0.01 |
June 30, 2020 SPA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Ordinary shares, par value | $ / shares | $ 0.01 |  |  |  |
Warrants Issued | October 2020 Offering |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Restricted cash | $ 10,000 |  | $ 11,000 |  |
Warrants Issued | June 3, 2020 SPA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Restricted cash | 15,000 |  | 17,000 |  |
Warrants Issued | June 30, 2020 SPA |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Restricted cash | 4,000 |  | $ 6,000 |  |
Maximum |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Cash, Federal Deposit Isurance Corporation insured amount | 250,000 |  |  |  |
Cash, DGS insured amount | $ 117,000 | € 100 |  |  |

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