10-K Filing

CENTURY ALUMINUM CO CIK: 949157 FY 2012

Filing Information

Form Type	10-K
Accession Number	`0000949157-13-000013`
Period End Date	20121231
Filing Date	20130318
Fiscal Year	2012
Fiscal Period	FY
XBRL Instance	cenx-20121231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 83 Income Statement 89 Cash Flow Statement 133 Stockholders Equity 37 Comprehensive Income 47

Balance Sheet 83 line items

Line Item	Tag	Value	Unit	Period
Series A Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Series A Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$198.23M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time
Series A Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$304.30M	USD	Point-in-time
Series A Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Series A Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	80,718.00	shares	Point-in-time
Series A Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	80,283.00	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$258.00K	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	-	USD	Point-in-time
Accounts receivable net	`AccountsReceivableNetCurrent`	$47.65M	USD	Point-in-time
Accounts receivable net	`AccountsReceivableNetCurrent`	$50.67M	USD	Point-in-time
Series A Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	80,283.00	shares	Point-in-time
Series A Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	80,718.00	shares	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Due from affiliates	`DueFromRelatedPartiesCurrent`	$37.87M	USD	Point-in-time
Due from affiliates	`DueFromRelatedPartiesCurrent`	$44.66M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Inventories	`InventoryNet`	$171.96M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	195.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	195.00M	shares	Point-in-time
Inventories	`InventoryNet`	$159.93M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	93.23M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	93.34M	shares	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$34.98M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$40.65M	USD	Point-in-time
Deferred tax - current portion	`DeferredTaxAssetsNetCurrent`	$19.73M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	88.84M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	88.55M	shares	Point-in-time
Deferred tax - current portion	`DeferredTaxAssetsNetCurrent`	-	USD	Point-in-time
Total current assets	`AssetsCurrent`	$488.32M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$487.40M	USD	Point-in-time
Property, plant and equipment net	`PropertyPlantAndEquipmentNet`	$1.22B	USD	Point-in-time
Property, plant and equipment net	`PropertyPlantAndEquipmentNet`	$1.19B	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$104.55M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$100.72M	USD	Point-in-time
TOTAL	`Assets`	$1.81B	USD	Point-in-time
TOTAL	`Assets`	$1.92B	USD	Point-in-time
TOTAL	`Assets`	$1.78B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$86.17M	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$75.37M	USD	Point-in-time
Due to affiliates	`DueToRelatedPartiesCurrent`	$41.90M	USD	Point-in-time
Due to affiliates	`DueToRelatedPartiesCurrent`	$39.74M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$40.10M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$40.78M	USD	Point-in-time
Accrued employee benefits costs current portion	`PostemploymentBenefitsLiabilityCurrent`	$18.68M	USD	Point-in-time
Accrued employee benefits costs current portion	`PostemploymentBenefitsLiabilityCurrent`	$16.70M	USD	Point-in-time
Industrial revenue bonds	`IndustrialRevenueBonds`	$7.82M	USD	Point-in-time
Industrial revenue bonds	`IndustrialRevenueBonds`	$7.82M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$193.37M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$181.70M	USD	Point-in-time
Senior notes payable	`SeniorLongTermNotes`	$250.58M	USD	Point-in-time
Senior notes payable	`SeniorLongTermNotes`	$249.51M	USD	Point-in-time
Accrued pension benefits costs less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$70.90M	USD	Point-in-time
Accrued pension benefits costs less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$67.88M	USD	Point-in-time
Accrued postretirement benefits costs less current portion	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$143.10M	USD	Point-in-time
Accrued postretirement benefits costs less current portion	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$128.08M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$40.01M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$40.16M	USD	Point-in-time
Deferred taxes	`DeferredTaxLiabilitiesNoncurrent`	$110.25M	USD	Point-in-time
Deferred taxes	`DeferredTaxLiabilitiesNoncurrent`	$90.96M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$579.45M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$611.98M	USD	Point-in-time
Series A Preferred stock (one cent par value, 5,000,000 shares authorized; 80,283 and 80,718 shares issued and outstanding at December 31, 2012 and December 31, 2011, respectively)	`PreferredStockValue`	$1.00K	USD	Point-in-time
Series A Preferred stock (one cent par value, 5,000,000 shares authorized; 80,283 and 80,718 shares issued and outstanding at December 31, 2012 and December 31, 2011, respectively)	`PreferredStockValue`	$1.00K	USD	Point-in-time
Common stock (one cent par value, 195,000,000 shares authorized; 93,335,158 issued and 88,548,637 shares outstanding at December 31, 2012; 93,230,848 issued and 88,844,327 outstanding at December 31, 2011)	`CommonStockValue`	$932.00K	USD	Point-in-time
Common stock (one cent par value, 195,000,000 shares authorized; 93,335,158 issued and 88,548,637 shares outstanding at December 31, 2012; 93,230,848 issued and 88,844,327 outstanding at December 31, 2011)	`CommonStockValue`	$933.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.51B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.51B	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$45.89M	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$49.92M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-151.19M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-134.59M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.32B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.29B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$1.15B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$1.04B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$1.07B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$982.64M	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.81B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.78B	USD	Point-in-time

Income Statement 89 line items

Line Item	Tag	Value	Unit	Period
Third-party customers	`SalesRevenueGoodsNet`	$791.99M	USD	Annual
Third-party customers	`SalesRevenueGoodsNet`	$755.86M	USD	Annual
Third-party customers	`SalesRevenueGoodsNet`	$719.81M	USD	Annual
Related parties	`RevenueFromRelatedParties`	$413.41M	USD	Annual
Related parties	`RevenueFromRelatedParties`	$552.30M	USD	Annual
Related parties	`RevenueFromRelatedParties`	$564.43M	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$326.34M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$1.17B	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$1.27B	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$366.28M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$323.62M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$345.65M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$1.36B	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$317.67M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$304.63M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$318.16M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$326.19M	USD	1 Quarter
Cost of goods sold	`CostOfGoodsSold`	$1.06B	USD	Annual
Cost of goods sold	`CostOfGoodsSold`	$1.23B	USD	Annual
Cost of goods sold	`CostOfGoodsSold`	$1.27B	USD	Annual
Gross profit	`GrossProfit`	$3.25M	USD	1 Quarter
Gross profit	`GrossProfit`	$46.34M	USD	Annual
Gross profit	`GrossProfit`	$42.32M	USD	1 Quarter
Gross profit	`GrossProfit`	$20.59M	USD	1 Quarter
Gross profit	`GrossProfit`	$-13.63M	USD	1 Quarter
Gross profit	`GrossProfit`	$89.52M	USD	Annual
Gross profit	`GrossProfit`	$11.32M	USD	1 Quarter
Gross profit	`GrossProfit`	$49.51M	USD	1 Quarter
Gross profit	`GrossProfit`	$112.40M	USD	Annual
Gross profit	`GrossProfit`	$5.96M	USD	1 Quarter
Gross profit	`GrossProfit`	$16.54M	USD	1 Quarter
Other operating expenses (income) net	`OtherOperatingIncomeExpenseNet`	$37.39M	USD	Annual
Other operating expenses (income) net	`OtherOperatingIncomeExpenseNet`	$3.81M	USD	Annual
Other operating expenses (income) net	`OtherOperatingIncomeExpenseNet`	$-18.25M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$35.36M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$46.80M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$46.03M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$102.98M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-7.27M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$47.30M	USD	Annual
Interest expense third party	`InterestExpense`	$24.03M	USD	Annual
Interest expense third party	`InterestExpense`	$25.13M	USD	Annual
Interest expense third party	`InterestExpense`	$25.62M	USD	Annual
Interest income related party	`InvestmentIncomeRelatedParties`	$303.00K	USD	Annual
Interest income related party	`InvestmentIncomeRelatedParties`	$448.00K	USD	Annual
Interest income related party	`InvestmentIncomeRelatedParties`	$62.00K	USD	Annual
Interest income third parties	`InvestmentIncomeInterest`	$492.00K	USD	Annual
Interest income third parties	`InvestmentIncomeInterest`	$338.00K	USD	Annual
Interest income third parties	`InvestmentIncomeInterest`	$615.00K	USD	Annual
Net gain (loss) on forward contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$-10.49M	USD	Annual
Net gain (loss) on forward contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$804.00K	USD	Annual
Net gain (loss) on forward contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$-4.15M	USD	Annual
Other income (expense) - net	`OtherNonoperatingExpense`	$-5.58M	USD	Annual
Other income (expense) - net	`OtherNonoperatingExpense`	$1.37M	USD	Annual
Other income (expense) - net	`OtherNonoperatingExpense`	$377.00K	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-29.32M	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$67.55M	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$22.24M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$14.36M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$11.13M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$8.91M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-38.23M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$56.41M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$7.88M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$2.62M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$3.44M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$3.56M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-6.91M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-6.60M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-12.28M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$59.97M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-4.40M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$11.32M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-12.02M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$25.05M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$23.99M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-31.11M	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$0.11	USD	Annual
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.14	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.08	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.05	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.35	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$0.25	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.14	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$0.24	USD	1 Quarter
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.40	USD	Annual
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$0.59	USD	Annual
Basic and Diluted (in dollars per share)	`EarningsPerShareBasicAndDiluted`	$-0.07	USD	1 Quarter

Cash Flow Statement 133 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`NetIncomeLoss`	$-6.91M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-6.60M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-12.28M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$59.97M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-4.40M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$11.32M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-12.02M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$25.05M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$23.99M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-31.11M	USD	1 Quarter
Unrealized net loss on forward contracts	`UnrealizedGainLossOnCommodityContracts`	$-2.99M	USD	Annual
Unrealized net loss on forward contracts	`UnrealizedGainLossOnCommodityContracts`	$750.00K	USD	Annual
Unrealized net loss on forward contracts	`UnrealizedGainLossOnCommodityContracts`	$-10.03M	USD	Annual
Realized Gain Loss On Contract Receivable	`RealizedGainLossOnContractReceivable`	-	USD	Annual
Realized Gain Loss On Contract Receivable	`RealizedGainLossOnContractReceivable`	$-55.70M	USD	Annual
Realized Gain Loss On Contract Receivable	`RealizedGainLossOnContractReceivable`	-	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$-5.25M	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$56.01M	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$13.93M	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$-19.82M	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$-426.00K	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$19.77M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$62.57M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$63.55M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$62.19M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$1.07M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$1.86M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$3.15M	USD	Annual
Increase (Decrease) in Deferred Income Taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-2.49M	USD	Annual
Increase (Decrease) in Deferred Income Taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-1.53M	USD	Annual
Increase (Decrease) in Deferred Income Taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-15.55M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$14.58M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$3.13M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$-28.76M	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-613.00K	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-2.86M	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-1.91M	USD	Annual
Non-cash contingent obligation	`NonCashContingentObligation`	-	USD	Annual
Non-cash contingent obligation	`NonCashContingentObligation`	$-13.09M	USD	Annual
Non-cash contingent obligation	`NonCashContingentObligation`	-	USD	Annual
Non-cash loss on early extinguishment and modification of debt	`NonCashLossOnEarlyExtinguishmentAndModificationOfDebt`	-	USD	Annual
Non-cash loss on early extinguishment and modification of debt	`NonCashLossOnEarlyExtinguishmentAndModificationOfDebt`	-	USD	Annual
Non-cash loss on early extinguishment and modification of debt	`NonCashLossOnEarlyExtinguishmentAndModificationOfDebt`	$763.00K	USD	Annual
Undistributed earnings of joint ventures	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$3.56M	USD	Annual
Undistributed earnings of joint ventures	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$3.44M	USD	Annual
Undistributed earnings of joint ventures	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$2.62M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$2.54M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$3.74M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$6.20M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-2.20M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$38.19M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-10.69M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$35.82M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$24.01M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-31.85M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$20.79M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-4.95M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-13.41M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$11.67M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-12.11M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-904.00K	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$-3.48M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$12.69M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$-2.17M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-5.75M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-1.76M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$425.00K	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$3.69M	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$13.64M	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-1.60M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-2.94M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$37.14M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$131.51M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$12.24M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$20.10M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$17.68M	USD	Annual
Nordural expansion - Helguvik	`PaymentsToAcquireProjects`	$7.32M	USD	Annual
Nordural expansion - Helguvik	`PaymentsToAcquireProjects`	$12.88M	USD	Annual
Nordural expansion - Helguvik	`PaymentsToAcquireProjects`	$19.23M	USD	Annual
Purchase of carbon anode assets	`PaymentsToAcquireCarbonAnodeAssets`	-	USD	Annual
Purchase of carbon anode assets	`PaymentsToAcquireCarbonAnodeAssets`	$13.81M	USD	Annual
Purchase of carbon anode assets	`PaymentsToAcquireCarbonAnodeAssets`	-	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	$275.00K	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	$32.00K	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	$113.00K	USD	Annual
Payments received on advances from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	$3.06M	USD	Annual
Payments received on advances from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	$6.62M	USD	Annual
Payments received on advances from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	-	USD	Annual
Proceeds from the sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$823.00K	USD	Annual
Proceeds from the sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$1.47M	USD	Annual
Proceeds from the sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$188.00K	USD	Annual
Net change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-3.67M	USD	Annual
Net change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$258.00K	USD	Annual
Net change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-5.21M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-24.89M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-25.47M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-32.53M	USD	Annual
Repayments of debt	`RepaymentsOfDebt`	$47.07M	USD	Annual
Repayments of debt	`RepaymentsOfDebt`	-	USD	Annual
Repayments of debt	`RepaymentsOfDebt`	-	USD	Annual
Repayments Of Contingent Obligation	`RepaymentsOfContingentObligation`	-	USD	Annual
Repayments Of Contingent Obligation	`RepaymentsOfContingentObligation`	$189.00K	USD	Annual
Repayments Of Contingent Obligation	`RepaymentsOfContingentObligation`	-	USD	Annual
Proceeds from Lines of Credit	`ProceedsFromLinesOfCredit`	-	USD	Annual
Proceeds from Lines of Credit	`ProceedsFromLinesOfCredit`	$15.90M	USD	Annual
Proceeds from Lines of Credit	`ProceedsFromLinesOfCredit`	$18.08M	USD	Annual
Repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	$18.08M	USD	Annual
Repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	$15.90M	USD	Annual
Repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	-	USD	Annual
Intercompany transactions	`IntercompanyTransactions`	-	USD	Annual
Intercompany transactions	`IntercompanyTransactions`	-	USD	Annual
Intercompany transactions	`IntercompanyTransactions`	-	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$4.03M	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$45.89M	USD	Annual
Issuance of common stock - net	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Issuance of common stock - net	`ProceedsFromIssuanceOfCommonStock`	$23.00K	USD	Annual
Issuance of common stock - net	`ProceedsFromIssuanceOfCommonStock`	$83.00K	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-93.06M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-4.03M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$23.00K	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-120.89M	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$106.06M	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$575.00K	USD	Annual
Cash and cash equivalents, beginning of the period	`CashAndCashEquivalentsAtCarryingValue`	$198.23M	USD	Point-in-time
Cash and cash equivalents, beginning of the period	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time
Cash and cash equivalents, beginning of the period	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents, beginning of the period	`CashAndCashEquivalentsAtCarryingValue`	$304.30M	USD	Point-in-time
Cash and cash equivalents, end of the period	`CashAndCashEquivalentsAtCarryingValue`	$198.23M	USD	Point-in-time
Cash and cash equivalents, end of the period	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time
Cash and cash equivalents, end of the period	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents, end of the period	`CashAndCashEquivalentsAtCarryingValue`	$304.30M	USD	Point-in-time

Stockholders Equity 37 line items

Line Item	Tag	Value	Unit	Period
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.15B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.04B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.07B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$982.64M	USD	Point-in-time
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-6.91M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-6.60M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-12.28M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$59.97M	USD	Annual
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-4.40M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-35.61M	USD	Annual
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$11.32M	USD	Annual
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-12.02M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$25.05M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$23.99M	USD	1 Quarter
Net Income (Loss) Attributable to Parent	`NetIncomeLoss`	$-31.11M	USD	1 Quarter
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$24.29M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-16.60M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-84.61M	USD	Annual
Stock Issued During Period, Value, Stock Options Exercised	`StockIssuedDuringPeriodValueStockOptionsExercised`	$83.00K	USD	Annual
Stock Issued During Period, Value, Stock Options Exercised	`StockIssuedDuringPeriodValueStockOptionsExercised`	-	USD	Annual
Stock Issued During Period, Value, Stock Options Exercised	`StockIssuedDuringPeriodValueStockOptionsExercised`	$1.07M	USD	Annual
Shares based compensation	`SharesBasedCompensation`	$1.45M	USD	Annual
Treasury Stock, Value, Acquired, Cost Method	`TreasuryStockValueAcquiredCostMethod`	$49.92M	USD	5 Qtrs
Treasury Stock, Value, Acquired, Cost Method	`TreasuryStockValueAcquiredCostMethod`	$-45.89M	USD	Annual
Treasury Stock, Value, Acquired, Cost Method	`TreasuryStockValueAcquiredCostMethod`	$-4.03M	USD	Annual
Payments for Repurchase of Common Stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Payments for Repurchase of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$4.03M	USD	Annual
Payments for Repurchase of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$45.89M	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-613.00K	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-2.86M	USD	Annual
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-1.91M	USD	Annual
Conversion of Stock, Amount Converted	`ConversionOfStockAmountConverted1`	-	USD	Annual
Conversion of Stock, Amount Converted	`ConversionOfStockAmountConverted1`	-	USD	Annual
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.15B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.04B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$1.07B	USD	Point-in-time
Stockholders' Equity Attributable to Parent	`StockholdersEquity`	$982.64M	USD	Point-in-time

Comprehensive Income 47 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`NetIncomeLoss`	$-6.91M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-6.60M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-12.28M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$59.97M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-4.40M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$11.32M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-12.02M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$25.05M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$23.99M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-31.11M	USD	1 Quarter
Net unrealized gain (loss) on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-81.00K	USD	Annual
Net unrealized gain (loss) on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-218.00K	USD	Annual
Net unrealized gain (loss) on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-479.00K	USD	Annual
Net loss (gain) reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	$40.00K	USD	Annual
Net loss (gain) reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	$171.00K	USD	Annual
Net loss (gain) reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	$567.00K	USD	Annual
Net gain on foreign currency cash flow hedges reclassified to income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain on foreign currency cash flow hedges reclassified to income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain on foreign currency cash flow hedges reclassified to income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-32.32M	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-16.69M	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-62.21M	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	-	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	-	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	$-112.49M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax`	$61.22M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax`	$4.11M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax`	$32.68M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax`	$16.93M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax`	$8.11M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax`	$9.84M	USD	Annual
Comprehensive Income (Loss); Change in Investee before tax	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	$-253.00K	USD	Annual
Comprehensive Income (Loss); Change in Investee before tax	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	$-4.24M	USD	Annual
Comprehensive Income (Loss); Change in Investee before tax	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	$343.00K	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-15.04M	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-78.84M	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$27.31M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$3.02M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$1.56M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$5.77M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$24.29M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-84.61M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-16.60M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-73.29M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-52.21M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$84.27M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.