XML 46 R37.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Commitments and Contingencies - Additional Information (Detail) - Mar. 31, 2016 - Further Indication for AMR101 - Laxdale Limited $ in Millions | USD ($) | GBP (£)
--- | --- | ---
Potential Marketing Approval 1 |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential aggregate stock or cash payment | $ 7.2 | £ 5,000,000
Potential Marketing Approval 2 |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential aggregate stock or cash payment | 7.2 | 5,000,000
Marketing Approval In Europe |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential aggregate stock or cash payment | 10.8 | 7,500,000
Maximum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential aggregate stock or cash payment | $ 14.4 | £ 10,000,000

X
- Definition Commitments and Contingencies Disclosure [Line Items] + References No definition available. + Details
Name: | amrn_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | amrn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount the entity has committed to make for future royalty guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 440 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473578&loc=d3e63223-108013 + Details
Name: | us-gaap_RoyaltyGuaranteesCommitmentsAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementScenarioAxis=amrn_FurtherIndicationForAmrOneZeroOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | amrn_LiabilitiesForCommitmentsAxis=amrn_LaxdaleLimitedMember
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: |

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |