XML 34 R24.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Summarizes Activity of the Net Product Revenue Allowance and Reserve Categories (Detail) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | $ 15,796 | $ 7,090
Provision related to current period sales | 44,864 | 21,968
Provision related to prior period sales | (553) | (157)
Credits/payments made for current period sales | (20,075) | (12,202)
Credits/payments made for prior period sales | (14,187) | (6,376)
Ending balance | 25,845 | 10,323
Trade Receivables |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 4,296 | 2,207
Provision related to current period sales | 10,048 | 6,044
Provision related to prior period sales | (87) | (113)
Credits/payments made for current period sales | (6,415) | (3,810)
Credits/payments made for prior period sales | (4,180) | (2,039)
Ending balance | 3,662 | 2,289
Rebates Chargebacks And Discounts |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 9,881 | 3,610
Provision related to current period sales | 28,945 | 11,957
Provision related to prior period sales | (466) | (44)
Credits/payments made for current period sales | (10,750) | (6,243)
Credits/payments made for prior period sales | (8,497) | (3,531)
Ending balance | 19,113 | 5,749
Allowance for Sales Returns |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 535 | 481
Provision related to current period sales | 257 | 276
Credits/payments made for prior period sales | (226) | (14)
Ending balance | 566 | 743
Other Incentive Programs |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 1,084 | 792
Provision related to current period sales | 5,614 | 3,691
Credits/payments made for current period sales | (2,910) | (2,149)
Credits/payments made for prior period sales | (1,284) | (792)
Ending balance | $ 2,504 | $ 1,542

X
- Definition Credits/payments Made for Prior Period Sales + References No definition available. + Details
Name: | amrn_CreditsPaymentsMadeForPriorPeriodSales
Namespace Prefix: | amrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Provision Related to Prior Period Sales + References No definition available. + Details
Name: | amrn_ProvisionRelatedToPriorPeriodSales
Namespace Prefix: | amrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesDeductions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForTradeReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=amrn_RebatesChargebacksAndDiscountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForSalesReturnsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=amrn_OtherIncentiveProgramsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |