XML 46 R36.htm IDEA: XBRL DOCUMENT
v3.22.1

Commitments and Contingencies - Additional Information (Detail) $ in Thousands | Mar. 31, 2022 USD ($) | Mar. 31, 2022 GBP (£) | Dec. 31, 2021 USD ($)
--- | --- | --- | ---
Commitments And Contingencies Disclosure [Line Items] |  |  |
Potential payable amount over the agreement terms based on minimum purchase obligation | $ 49,300 |  |
Accrued expenses and other current liabilities | 207,622 |  | $ 253,111
Further Indication for AMR101 | Marketing Approval In Europe |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Potential aggregate stock or cash payment | £ |  | £ 7,500,000 |
Accrued expenses and other current liabilities | 12,000 |  |
Further Indication for AMR101 | Potential Marketing Approval 1 |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Aggregate stock or cash payment upon potential market approval | 6,600 | 5,000,000 |
Further Indication for AMR101 | Potential Marketing Approval 2 |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Aggregate stock or cash payment upon potential market approval | $ 6,600 | £ 5,000,000 |

X
- Definition Accrued liabilities and other liabilities current. + References No definition available. + Details
Name: | amrn_AccruedLiabilitiesAndOtherLiabilitiesCurrent
Namespace Prefix: | amrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments and contingencies disclosure. + References No definition available. + Details
Name: | amrn_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | amrn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Milestone payment achieved. + References No definition available. + Details
Name: | amrn_MilestonePaymentAchieved
Namespace Prefix: | amrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Potential milestone payment upon marketing approval. + References No definition available. + Details
Name: | amrn_PotentialMilestonePaymentUponMarketingApproval
Namespace Prefix: | amrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_StatementScenarioAxis=amrn_FurtherIndicationForAMROneZeroOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | amrn_BusinessDevelopmentsAxis=amrn_MarketingApprovalInEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | amrn_BusinessDevelopmentsAxis=amrn_PotentialMarketingApprovalOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | amrn_BusinessDevelopmentsAxis=amrn_PotentialMarketingApprovalTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |