XML 27 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9

Development, Commercialization and Supply Agreement - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Feb. 26, 2015
License And Collaboration Agreements [Line Items]
Licensing revenue	$ 375,000us-gaap_LicensesRevenue
Eddingpharm
License And Collaboration Agreements [Line Items]
Non-refundable up-front received		15,000,000amrn_NonRefundableUpfrontPaymentsReceived / amrn_BusinessDevelopmentsAxis = amrn_EddingpharmMember
Deferred revenue	14,600,000us-gaap_DeferredRevenue / amrn_BusinessDevelopmentsAxis = amrn_EddingpharmMember
Eddingpharm | Up-front Payment
License And Collaboration Agreements [Line Items]
Licensing revenue	400,000us-gaap_LicensesRevenue / amrn_BusinessDevelopmentsAxis = amrn_EddingpharmMember / us-gaap_DeferredRevenueArrangementTypeAxis = us-gaap_UpFrontPaymentArrangementMember
Eddingpharm | Maximum
License And Collaboration Agreements [Line Items]
Additional upfront payment eligible to receive based on development, regulatory and sales Milestone		$ 154,000,000amrn_EligibleMilestonePayment / amrn_BusinessDevelopmentsAxis = amrn_EddingpharmMember / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Definition

Eligible Milestone Payment

+ References

No definition available.

+ Details

Name:	amrn_EligibleMilestonePayment
Namespace Prefix:	amrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	amrn_LicenseAndCollaborationAgreementsLineItems
Namespace Prefix:	amrn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Non Refundable Upfront Payments Received

+ References

No definition available.

+ Details

Name:	amrn_NonRefundableUpfrontPaymentsReceived
Namespace Prefix:	amrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_LicensesRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	amrn_BusinessDevelopmentsAxis=amrn_EddingpharmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: