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Development, Commercialization and Supply Agreements - Summary of Licensing Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
License And Collaboration Agreements [Line Items] |  |  |  |  |  |
Revenue recognized related to upfront and milestone payments |  |  |  |  | $ 18,586 |
Revenue recognized related to upfront and milestone payments |  | $ 4,900 | $ 18,500 | $ 4,850 |  |
Licenses revenue |  |  |  | 228,614 | 306,911 | $ 369,193
Edding |  |  |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |  |  |
Revenue recognized related to upfront and milestone payments |  | $ 4,000 | $ 5,000 |  |  |
Edding | Out-licenses |  |  |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |  |  |
Revenue recognized related to upfront and milestone payments | [1] |  |  | 19,426 |  |
Revenue recognized related to upfront and milestone payments | [1] |  |  |  | 12,913 |
Edding | Out-licenses | Licensing Revenue |  |  |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |  |  |
Licenses revenue |  |  |  | $ 40,081 | $ 20,655 |
[1] | Licensing revenue under the DCS Agreement is recognized concurrent with the input measure of support hours provided by Amarin to Edding in achieving the combined development and regulatory performance obligation, which in the Company’s judgment is the best measure of progress towards satisfying this performance obligation.

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