XML 32 R22.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Revenue Recognition (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Revenue From Contract With Customer [Abstract] |
Summarize Activity of the Net Product Revenue Allowance and Reserve Categories | The following tables summarize activity in each of the net product revenue allowance and reserve categories described above for the three months ended March 31, 2018 and 2017:
In thousands |  | Trade Allowances |  |  | Rebates, Chargebacks and Discounts |  |  | Product Returns |  |  | Other Incentives |  |  | Total |
Balance as of December 31, 2017 |  | $ | 12,035 |  |  | $ | 32,064 |  |  | $ | 1,887 |  |  | $ | 2,107 |  |  | $ | 48,093 |
Provision related to current period sales |  |  | 8,506 |  |  |  | 32,947 |  |  |  | 222 |  |  |  | 4,185 |  |  |  | 45,860 |
Provision related to prior period sales |  |  | (200 | ) |  |  | (435 | ) |  |  | — |  |  |  | (69 | ) |  |  | (704 | )
Credits/payments made for current period sales |  |  | (875 | ) |  |  | (10,487 | ) |  |  | — |  |  |  | (1,799 | ) |  |  | (13,161 | )
Credits/payments made for prior period sales |  |  | (1,336 | ) |  |  | (20,994 | ) |  |  | (25 | ) |  |  | (2,296 | ) |  |  | (24,651 | )
Balance as of March 31, 2018 |  | $ | 18,130 |  |  | $ | 33,095 |  |  | $ | 2,084 |  |  | $ | 2,128 |  |  | $ | 55,437 |
In thousands |  | Trade Allowances |  |  | Rebates, Chargebacks and Discounts |  |  | Product Returns |  |  | Other Incentives |  |  | Total |
Balance as of December 31, 2016 |  | $ | 3,743 |  |  | $ | 20,915 |  |  | $ | 859 |  |  | $ | 1,681 |  |  | $ | 27,198 |
Provision related to current period sales |  |  | 6,621 |  |  |  | 19,670 |  |  |  | 1,028 |  |  |  | 3,107 |  |  |  | 30,426 |
Provision related to prior period sales |  |  | (298 | ) |  |  | (702 | ) |  |  | — |  |  |  | (82 | ) |  |  | (1,082 | )
Credits/payments made for current period sales |  |  | (2,357 | ) |  |  | (727 | ) |  |  | — |  |  |  | (1,332 | ) |  |  | (4,416 | )
Credits/payments made for prior period sales |  |  | (3,107 | ) |  |  | (15,376 | ) |  |  | (9 | ) |  |  | (1,770 | ) |  |  | (20,262 | )
Balance as of March 31, 2017 |  | $ | 4,602 |  |  | $ | 23,780 |  |  | $ | 1,878 |  |  | $ | 1,604 |  |  | $ | 31,864 |

X
- Definition Summary of net product revenue valuation allowances. + References No definition available. + Details
Name: | amrn_SummaryOfNetProductRevenueValuationAllowancesTableTextBlock
Namespace Prefix: | amrn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration