$AMRN
AMARIN CORP PLC\UK Stock $amrn

$amrn Overview Financials Valuation SEC Filings Company Website

2022 Q4 Form 10-K Financial Statement

#000095017023005336 Filed on March 01, 2023

Income Statement

Concept	2022 Q4	2022
Revenue	$90.25M	$369.2M
YoY Change	-37.54%	-36.69%
Cost Of Revenue	$26.64M	$108.6M
YoY Change	-13.04%	-10.46%
Gross Profit	$63.60M	$242.5M
YoY Change	-44.14%	-47.5%
Gross Profit Margin	70.48%	65.68%
Selling, General & Admin	$68.13M	$304.4M
YoY Change	-26.24%	-25.45%
% of Gross Profit	107.12%	125.54%
Research & Development	$5.239M	$30.41M
YoY Change	-8.93%	3.77%
% of Gross Profit	8.24%	12.54%
Depreciation & Amortization	$761.0K	$600.0K
YoY Change	-2.56%	0.0%
% of Gross Profit	1.2%	0.25%
Operating Expenses	$73.37M	$348.4M
YoY Change	-25.22%	-22.82%
Operating Profit	-$9.766M	-$105.9M
YoY Change	-162.07%	-1108.08%
Interest Expense	$1.563M	$15.00K
YoY Change	808.72%	-88.37%
% of Operating Profit
Other Income/Expense, Net	$1.250M	-$740.0K
YoY Change	1320.45%	145.03%
Pretax Income	-$6.773M	-$103.8M
YoY Change	-141.32%	-1019.36%
Income Tax	-$7.629M	$1.998M
% Of Pretax Income
Net Earnings	$856.0K	-$105.8M
YoY Change	-94.18%	-1468.91%
Net Earnings / Revenue	0.95%	-28.66%
Basic Earnings Per Share		-$0.26
Diluted Earnings Per Share	$0.00	-$0.26
COMMON SHARES
Basic Shares Outstanding		401.2M
Diluted Shares Outstanding		401.2M

Balance Sheet

Concept	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$309.4M	$309.4M
YoY Change	-31.88%	-31.88%
Cash & Equivalents	$217.7M	$217.7M
Short-Term Investments	$91.70M	$91.70M
Other Short-Term Assets	$20.02M	$20.02M
YoY Change	-23.81%	-23.81%
Inventory	$228.7M	$228.7M
Prepaid Expenses
Receivables	$131.0M	$131.0M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$689.1M	$689.1M
YoY Change	-21.58%	-21.58%
LONG-TERM ASSETS
Property, Plant & Equipment	$874.0K	$9.948M
YoY Change	-38.67%	9.5%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.275M	$1.275M
YoY Change	-96.36%	-96.36%
Other Assets	$458.0K	$164.1M
YoY Change	0.44%	34.81%
Total Long-Term Assets	$197.1M	$197.1M
YoY Change	4.1%	4.09%
TOTAL ASSETS
Total Short-Term Assets	$689.1M	$689.1M
Total Long-Term Assets	$197.1M	$197.1M
Total Assets	$886.2M	$886.2M
YoY Change	-17.03%	-17.03%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$64.60M	$64.60M
YoY Change	-43.79%	-43.79%
Accrued Expenses	$192.7M	$157.0M
YoY Change	-23.88%	-24.32%
Deferred Revenue	$2.199M
YoY Change	-16.99%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$259.5M	$259.5M
YoY Change	-30.0%	-30.0%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$8.205M	$31.37M
YoY Change	7.28%	3.58%
Total Long-Term Liabilities	$8.205M	$31.37M
YoY Change	7.28%	3.58%
TOTAL LIABILITIES
Total Short-Term Liabilities	$259.5M	$259.5M
Total Long-Term Liabilities	$8.205M	$31.37M
Total Liabilities	$290.8M	$290.8M
YoY Change	-27.46%	-27.46%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.527B
YoY Change	7.44%
Common Stock	$299.0M
YoY Change	1.69%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$61.77M
YoY Change	1.72%
Treasury Stock Shares	$7.987M
Shareholders Equity	$595.3M	$595.3M
YoY Change
Total Liabilities & Shareholders Equity	$886.2M	$886.2M
YoY Change	-17.03%	-17.03%

Cashflow Statement

Concept	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$856.0K	-$105.8M
YoY Change	-94.18%	-1468.91%
Depreciation, Depletion And Amortization	$761.0K	$600.0K
YoY Change	-2.56%	0.0%
Cash From Operating Activities	$1.552M	-$180.1M
YoY Change	-105.5%	170.66%
INVESTING ACTIVITIES
Capital Expenditures	$599.0K	$599.0K
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$27.22M	$175.9M
YoY Change	-208.81%	68.95%
Cash From Investing Activities	-$27.82M	$175.3M
YoY Change	-211.2%	68.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	38.00K	-379.0K
YoY Change	-119.39%	-92.53%
NET CHANGE
Cash From Operating Activities	1.552M	-180.1M
Cash From Investing Activities	-27.82M	175.3M
Cash From Financing Activities	38.00K	-379.0K
Net Change In Cash	-26.23M	-5.183M
YoY Change	666.93%	-115.95%
FREE CASH FLOW
Cash From Operating Activities	$1.552M	-$180.1M
Capital Expenditures	$599.0K	$599.0K
Free Cash Flow	$953.0K	-$180.7M
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	0-21392
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	X0
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	Iconic Offices, The Greenway
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Dublin
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	2
CY2022	dei	Entity Address Country EntityAddressCountry	IE
CY2022	dei	City Area Code CityAreaCode	353 (0) 1
CY2022	dei	Local Phone Number LocalPhoneNumber	6699 020
CY2022	dei	Security12b Title Security12bTitle	American Depositary Shares (ADS(s)), each ADSrepresenting the right to receive one (1) Ordinary Share ofAmarin Corporation plc
CY2022	dei	Trading Symbol TradingSymbol	AMRN
CY2022	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	721200000
CY2022Q4	us-gaap	Liabilities Liabilities	290846000
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	259479000
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	370682000
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	13147000
CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	14060000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	10015000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8576000
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	8205000
CY2021Q4	us-gaap	Liabilities Liabilities	400966000
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.50
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.50
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	412333087
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	404346256
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	404084775
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	396598008
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	299002000
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	294027000
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1885352000
CY2022	dei	Entity Registrant Name EntityRegistrantName	AMARIN CORP PLC\UK
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://www.amarincorp.com/20221231#AccruedLiabilitiesAndOtherLiabilitiesCurrent
CY2022	us-gaap	Common Stock Shares Authorized Unlimited CommonStockSharesAuthorizedUnlimited	Unlimited
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	00-0000000
CY2021	us-gaap	Common Stock Shares Authorized Unlimited CommonStockSharesAuthorizedUnlimited	Unlimited
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000897448
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1855246000
CY2022Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	7986831
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	7486767
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	61770000
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	60726000
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1527251000
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1421448000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	595333000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	667099000
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	886179000
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1068065000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	369193000
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	583187000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	614060000
CY2022	us-gaap	Cost Direct Material CostDirectMaterial	108631000
CY2021	us-gaap	Cost Direct Material CostDirectMaterial	121327000
CY2020	us-gaap	Cost Direct Material CostDirectMaterial	131444000
CY2022	amrn	Cost Of Goods And Services Sold Restructuring Inventory CostOfGoodsAndServicesSoldRestructuringInventory	18078000
CY2022	us-gaap	Gross Profit GrossProfit	242484000
CY2021	us-gaap	Gross Profit GrossProfit	461860000
CY2020	us-gaap	Gross Profit GrossProfit	482616000
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	304416000
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	408334000
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	463312000
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	30411000
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	29307000
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	38959000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-103805000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11291000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-17255000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1998000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3562000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	745000
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Entity Address Address Line2 EntityAddressAddressLine2	Block C Ardilaun Court
CY2022	dei	Entity Address Address Line3 EntityAddressAddressLine3	112-114 St Stephens Green
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-105803000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	7729000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-18000000
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
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CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401155000
CY2022	dei	Auditor Firm AuditorFirmId	42
CY2022	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2022	dei	Auditor Location AuditorLocation	Iselin, New Jersey
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	217666000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	219454000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	523000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3918000
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	91695000
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	234674000
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CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	163653000
CY2022Q4	us-gaap	Inventory Net InventoryNet	228732000
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CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	22352000
CY2022Q4	us-gaap	Assets Current AssetsCurrent	689098000
CY2021Q4	us-gaap	Assets Current AssetsCurrent	878727000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	874000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1425000
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CY2021Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	121254000
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CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	456000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	21780000
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CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2199000
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CY2020	us-gaap	Interest Expense InterestExpense	2605000
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CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	26213000
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CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	635000
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2545000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2270000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1441000
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-32663000
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CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	38144000
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CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	167066000
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	112095000
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2860000
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8595000
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	17636000
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	2000
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	24000
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-642000
CY2022	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-341000
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-1363000
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-1923000
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-2214000
CY2022	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-102729000
CY2021	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	51516000
CY2020	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	114741000
CY2022	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	581000
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1329000
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-428000
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	131000000.0
CY2022Q4	us-gaap	Inventory Net InventoryNet	228700000
CY2022Q4	us-gaap	Long Term Investments LongTermInvestments	1300000
CY2022Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	163600000
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1253000
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	2629000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-180092000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-66537000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-21746000
CY2022	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	257520000
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	394294000
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	301989000
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	81633000
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	290195000
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	678700000
CY2022	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	599000
CY2021	amrn	Disposal Purchase Of Furniture Fixtures And Equipment DisposalPurchaseOfFurnitureFixturesAndEquipment	4000
CY2020	amrn	Disposal Purchase Of Furniture Fixtures And Equipment DisposalPurchaseOfFurnitureFixturesAndEquipment	-252000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	175288000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	104103000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-376963000
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	605000
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	1650000
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	1957000
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	60000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2921000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5158000
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	504000
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	50336000
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1044000
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	9644000
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	15182000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-379000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5073000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-58907000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5183000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	32493000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-457616000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	223372000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	190879000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	648495000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	218189000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	223372000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	190879000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	2043000
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1782000
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3656000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-207000
CY2021	amrn	Non Cash Or Part Non Cash Milestone Payment NonCashOrPartNonCashMilestonePayment	12000000
CY2022	amrn	Shares Issued In Settlement Of Milestone Payment SharesIssuedInSettlementOfMilestonePayment	8203000
CY2022	amrn	Initial Recognition Of Operating Lease Right Of Use Asset InitialRecognitionOfOperatingLeaseRightOfUseAsset	2041000
CY2020	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	18020000
CY2022	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2022Q4	us-gaap	Assets Assets	886200000
CY2022Q4	amrn	Cash And Liquid Short Term And Long Term Investments CashAndLiquidShortTermAndLongTermInvestments	310600000
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-4314000
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-9141000
CY2022Q4	us-gaap	Assets Current AssetsCurrent	689100000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	217700000
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	91700000
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2022Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	0
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<p style="margin-left:2.253%;text-indent:0.0%;font-size:10.0pt;margin-top:13.5pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;text-decoration:underline;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Use of Estimates</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:4.5pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Accounting estimates are based on historical experience and other factors that are considered reasonable under the circumstances. Estimates and assumptions relied upon in preparing these consolidated financial statements relate to, but are not limited to, </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">such items as provisions for sales returns, rebates and incentives, chargebacks, and other sales allowances; depreciable/amortizable lives; asset impairments; valuation allowance on deferred taxes; probabilities of achievement of performance conditions for certain equity awards; amounts recorded for licensing revenue; contingencies and accruals. Because of the uncertainties inherent in such estimates, actual results may differ from these estimates. Management periodically evaluates estimates used in the preparation of the consolidated financial statements for continued reasonableness.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p>
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2022	amrn	Accounts Receivable Credit Period AccountsReceivableCreditPeriod	P45D
CY2022Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	187418000
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	262948000
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	130990000
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	163653000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	381759000
CY2022	amrn	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	-105803000
CY2021	amrn	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	7729000
CY2020	amrn	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	-18000000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401155000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	395992000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	381759000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	401155000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	402480000
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-700000
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-600000
CY2021Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	41965000
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.05
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="margin-left:2.253%;text-indent:0.0%;font-size:10.0pt;margin-top:13.5pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;text-decoration:underline;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Concentration of Credit Risk</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:4.5pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Financial instruments that potentially subject the Company to credit risk consist primarily of cash and cash equivalents, short-term and long-term investments, and accounts receivable. The Company maintains substantially all of its cash and cash equivalents and short-term and long-term investments, in financial institutions believed to be of high-credit quality.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:9.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">A significant portion of the Company’s sales are to wholesalers in the pharmaceutical industry. The Company monitors the creditworthiness of customers to whom it grants credit terms and has not experienced any credit losses. The Company does not require collateral or any other security to support credit sales. </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Three</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> customers </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">individually accounted for 10% or more of the Company’s</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:9.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">gross </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">product sales. Customers A, B, and C accounted for </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">35</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">31</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, and </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">27</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, respectively, of gross product sales for the year ended December 31, 2022 and represented </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">35</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">21</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, and </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">39</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, respectively, of the gross accounts receivable balance as of December 31, 2022. Customers A, B, and C accounted for </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">37</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">28</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> and </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">27</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, respectively, of gross product sales for the year ended December 31, 2021 and represented </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">39</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">22</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, and </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">35</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">%</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, respectively, of the gross accounts receivable balance as of December 31, 2021</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">. The Company has not experienced any significant write-offs of its accounts receivable. All customer accounts are actively managed and no losses are currently expected; however, the Company is monitoring the potential negative impact of COVID-19 on the Company’s customers’ ability to meet their financial obligations.</span></p>
CY2022Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	213664000
CY2021Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	206270000
CY2022	us-gaap	Debt Instrument Term DebtInstrumentTerm	P24M
CY2022Q4	amrn	Held To Maturity Securities Continuous Unrealized Gain Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedGainLossPositionFairValue	400000
CY2021Q4	amrn	Held To Maturity Securities Continuous Unrealized Gain Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedGainLossPositionFairValue	200000
CY2022	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2021Q3	amrn	Number Of Sales Representatives NumberOfSalesRepresentatives	300
CY2021Q3	amrn	Number Of Sales Representatives NumberOfSalesRepresentatives	300
CY2022Q2	amrn	Number Of Sales Representatives NumberOfSalesRepresentatives	75
CY2022	amrn	Employee Restructuring Separation Charges EmployeeRestructuringSeparationCharges	9310000
CY2021	amrn	Employee Restructuring Separation Charges EmployeeRestructuringSeparationCharges	13717000
CY2022	amrn	Vendor Contract Charges VendorContractCharges	4216000
CY2022	us-gaap	Restructuring Charges RestructuringCharges	13526000
CY2021	us-gaap	Restructuring Charges RestructuringCharges	13717000
CY2022	amrn	Cost Of Goods And Services Sold Restructuring Inventory CostOfGoodsAndServicesSoldRestructuringInventory	18078000
CY2022	amrn	Restructuring Charges Stock Forfeitures RestructuringChargesStockForfeitures	591000
CY2022	amrn	Restructuring Charges Includes Cost Of Goods Sold Restructuring Inventory And Stock Forfeitures RestructuringChargesIncludesCostOfGoodsSoldRestructuringInventoryAndStockForfeitures	32195000
CY2021	amrn	Restructuring Charges Includes Cost Of Goods Sold Restructuring Inventory And Stock Forfeitures RestructuringChargesIncludesCostOfGoodsSoldRestructuringInventoryAndStockForfeitures	13717000
CY2021Q4	us-gaap	Restructuring Reserve RestructuringReserve	1186000
CY2022	amrn	Restructuring Costs Incurred RestructuringCostsIncurred	32195000
CY2022	us-gaap	Payments For Restructuring PaymentsForRestructuring	33189000
CY2022Q4	us-gaap	Restructuring Reserve RestructuringReserve	192000
CY2022	amrn	Capitalized Cost CapitalizedCost	800000
CY2022	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P8Y1M6D
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3346000
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3346000
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2472000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	32859000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	32081000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	11079000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	8534000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	21780000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	23547000
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2300000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2805000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2805000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2805000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2546000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2546000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	8273000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	21780000
CY2022Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	126391000
CY2021Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	107695000
CY2022Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	52297000
CY2022Q4	amrn	Inventory Current And Non Current InventoryCurrentAndNonCurrent	392352000
CY2021Q4	amrn	Inventory Current And Non Current InventoryCurrentAndNonCurrent	355930000
CY2022Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	163600000
CY2021Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	121300000
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1921000
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	33303
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1203845
CY2022	amrn	Proceeds From Stock Options Exercised Gross ProceedsFromStockOptionsExercisedGross	59686
CY2021	amrn	Proceeds From Stock Options Exercised Gross ProceedsFromStockOptionsExercisedGross	2921000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	874000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1425000
CY2022	us-gaap	Depreciation Depreciation	600000
CY2021	us-gaap	Depreciation Depreciation	600000
CY2020	us-gaap	Depreciation Depreciation	600000
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	20302000
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	19730000
CY2022Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	1672000
CY2021Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	3563000
CY2022Q4	amrn	Accrued Liabilities Sales Allowances Current AccruedLiabilitiesSalesAllowancesCurrent	135061000
CY2021Q4	amrn	Accrued Liabilities Sales Allowances Current AccruedLiabilitiesSalesAllowancesCurrent	184216000
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	35643000
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	45602000
CY2022Q4	amrn	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	192678000
CY2021Q4	amrn	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	253111000
CY2022Q4	us-gaap	Purchase Obligation PurchaseObligation	86000000.0
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.50
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	18493000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.32
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0174
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y3M
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	5038000
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.56
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	4105000
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	8.39
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	211000
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	11.65
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	33000
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.79
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	19182000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.80
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y2M12D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	158000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	12888000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	6.80
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y10M24D
CY2022Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	86000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	18867000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	5.83
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y2M12D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	155000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	15383000
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.56
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.12
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.43
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	16600000
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	21100000
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	22500000
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	100000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2900000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5200000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4900000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9000000.0
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	13500000
CY2022	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y1M6D
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0164
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0435
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0053
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0136
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0033
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y3M
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y3M
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.96
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2248000
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	5391000
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5782000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	238000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	254000
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	1.01
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.96
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.99
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.84
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.99
CY2022	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	14800000
CY2021	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	23000000.0
CY2020	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	22400000
CY2022	us-gaap	Restricted Stock Expense RestrictedStockExpense	11400000
CY2021	us-gaap	Restricted Stock Expense RestrictedStockExpense	13900000
CY2020	us-gaap	Restricted Stock Expense RestrictedStockExpense	23400000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	26213000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	36938000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	45813000
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	8200000
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	7900000
CY2022	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	500000
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	900000
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22040000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24034000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	26743000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	16000
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18715000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22040000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24034000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2428000
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	9107000
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-4416000
CY2022	us-gaap	Valuation Allowances And Reserves Period Increase Decrease ValuationAllowancesAndReservesPeriodIncreaseDecrease	5083000
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CY2020	us-gaap	Valuation Allowances And Reserves Period Increase Decrease ValuationAllowancesAndReservesPeriodIncreaseDecrease	22865000
CY2022Q4	amrn	Deferred Tax Liabilities Subject To Expiration DeferredTaxLiabilitiesSubjectToExpiration	0
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	5358000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	10222000
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CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11291000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-17255000
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	562000
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2690000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	45000
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	573000
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CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	863000
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	156000
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1998000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3562000
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CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3721000
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5222000
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CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-284000
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3057000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1956000
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CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1619000
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-26793000
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	128000
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5083000
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-546000
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	22865000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1998000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3562000
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CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-25952000
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-2823000
CY2020	amrn	Income Tax Reconciliation Windfall Tax Benefit Shortfall IncomeTaxReconciliationWindfallTaxBenefitShortfall	3262000
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CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	5249000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	6122000
CY2022	amrn	Income Tax Reconciliation Windfall Tax Benefit Shortfall IncomeTaxReconciliationWindfallTaxBenefitShortfall	-3569000
CY2021	amrn	Income Tax Reconciliation Windfall Tax Benefit Shortfall IncomeTaxReconciliationWindfallTaxBenefitShortfall	-81000
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4940000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5054000
CY2020	amrn	Income Tax Reconciliation Disqualifying Disposition Windfall IncomeTaxReconciliationDisqualifyingDispositionWindfall	253000
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	958000
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CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	6225000
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CY2021	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-8372000
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CY2020	amrn	Income Tax Reconciliation Net Operating Loss Carryback IncomeTaxReconciliationNetOperatingLossCarryback	2465000
CY2022	amrn	Income Tax Rate Reconciliation Foreign Exchange IncomeTaxRateReconciliationForeignExchange	7859000
CY2021	amrn	Income Tax Rate Reconciliation Foreign Exchange IncomeTaxRateReconciliationForeignExchange	4109000
CY2020	amrn	Income Tax Rate Reconciliation Foreign Exchange IncomeTaxRateReconciliationForeignExchange	-10852000
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1542000
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	863000
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-4283000
CY2022	amrn	Income Tax Rate Reconciliation Uncertain Tax Positions IncomeTaxRateReconciliationUncertainTaxPositions	-3290000
CY2021	amrn	Income Tax Rate Reconciliation Uncertain Tax Positions IncomeTaxRateReconciliationUncertainTaxPositions	5160000
CY2020	amrn	Income Tax Rate Reconciliation Uncertain Tax Positions IncomeTaxRateReconciliationUncertainTaxPositions	3422000
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CY2022	amrn	Income Tax Reconciliation Loss Of Tax Attributes IncomeTaxReconciliationLossOfTaxAttributes	8255000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1998000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3562000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	745000
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CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	8563000
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CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	160295000
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CY2022	amrn	Foreign Exchange Valuation Allowances ForeignExchangeValuationAllowances	-7859000
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CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	16808000
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Files In Submission

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amrn-20221231.xsd	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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$AMRN
AMARIN CORP PLC\UK Stock $amrn

2022 Q4 Form 10-K Financial Statement

#000095017023005336 Filed on March 01, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRN AMARIN CORP PLC\UK Stock $amrn

2022 Q4 Form 10-K Financial Statement

#000095017023005336 Filed on March 01, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRN
AMARIN CORP PLC\UK Stock $amrn