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Commitments and contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Mar. 31, 2022 | Oct. 25, 2019
Raw krill oil supply contract [Abstract] |  |  |  |
Shipping cost | $ 0 | $ 193 |  |
Legal proceedings and disputes [Abstract] |  |  |  |
Reserves or Liabilities | 0 | 0 |  |
Raw Krill Oil Supply Contract [Member] |  |  |  |
Research and development contracts and contract research organizations agreements [Abstract] |  |  |  |
Purchase commitments |  |  | $ 2,800 |
Raw krill oil supply contract [Abstract] |  |  |  |
Committed value of contract |  |  |  | $ 3,100
CMOs [Member] |  |  |  |
Research and development contracts and contract research organizations agreements [Abstract] |  |  |  |
Purchase commitments | 398 | 398 |  |
CROs [Member] |  |  |  |
Research and development contracts and contract research organizations agreements [Abstract] |  |  |  |
Purchase commitments | $ 3,900 | $ 3,900 |  |

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