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Agreement and Plan of Merger - Additional Information (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended
--- | --- | ---
Nov. 14, 2024 USD ($) yr $ / shares shares | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($)
Agreement And Plan Of Merger [Line Items] |  |  |
ADSs issued amount | $ |  | $ 2,242 | $ 1,664
American Depositary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Percentage of expected ownership in outstanding shares | 48.40% |  |
Akari Ordinary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Merger agreement exchange ratio per ordinary share | 0.2935 |  |
Akari Ordinary Shares | American Depositary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Aggregate ADSs issued (in shares) | 12,613,942 |  |
Peak Bio |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Date of acquisition | Nov. 14, 2024 |  |
Estimated fair value of adjusted warrants | $ | $ 1,800 |  |
Estimated fair value of the adjusted options | $ | 1,800 |  |
Peak Bio | Intellectual Property |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Intangible assets | $ | 39,200 |  |
Peak Bio | Goodwill |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Intangible assets | $ | $ 8,400 |  |
Peak Bio | Stock price |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 2.23 |  |
Peak Bio | Volatility | Minimum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 84.1 |  |
Peak Bio | Volatility | Maximum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 86.4 |  |
Peak Bio | Expected dividend yield |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 0 |  |
Peak Bio | Expected term (in years) | Minimum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | yr | 0.2 |  |
Peak Bio | Expected term (in years) | Maximum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | yr | 5.32 |  |
Peak Bio | Risk-free rate | Minimum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 4.3 |  |
Peak Bio | Risk-free rate | Maximum |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Warrants outstanding, measurement input | 4.6 |  |
Peak Bio | American Depositary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Aggregate ADSs issued (in shares) | 12,613,942 |  |
Assumed options to purchase | 16,996,592 |  |
Peak Bio | American Depositary Shares | November 2022 Peak Warrants |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Aggregate ADSs issued (in shares) | 1,577,556 |  |
Price per share | $ / shares | $ 39.18 |  |
Peak Bio | American Depositary Shares | April 2023 Peak Warrants |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Aggregate ADSs issued (in shares) | 1,187,013 |  |
Price per share | $ / shares | $ 2.04 |  |
Peak Bio | Akari Ordinary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Assumed options to purchase | 25,227,884,000 |  |
Peak Bio | Peak Bio Adjusted Options [Member] | American Depositary Shares |  |  |
Agreement And Plan Of Merger [Line Items] |  |  |
Assumed options to purchase | 1,618,081 |  |

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