10-K Filing

ALPHA METALLURGICAL RESOURCES, INC. CIK: 1704715 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0001704715-21-000026`
Period End Date	20201231
Filing Date	20210315
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	amr-20201231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 102 Income Statement 72 Cash Flow Statement 111 Stockholders Equity 16 Comprehensive Income 18

Balance Sheet 102 line items

Line Item	Tag	Value	Unit	Period
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivable`	-	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivable`	$293.00K	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization`	$382.42M	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization`	$256.38M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$212.80M	USD	Point-in-time
Owned and leased mineral rights, accumulated depletion and amortization	`MineralPropertiesAccumulatedDepletion`	$35.14M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$139.23M	USD	Point-in-time
Owned and leased mineral rights, accumulated depletion and amortization	`MineralPropertiesAccumulatedDepletion`	$27.55M	USD	Point-in-time
Other acquired intangibles, accumulated amortization	`FiniteLivedIntangibleAssetsAccumulatedAmortization`	$25.70M	USD	Point-in-time
Trade accounts receivable, net of allowance for doubtful accounts of $293 and $0 as of December 31, 2020 and 2019	`AccountsReceivableNetCurrent`	$224.17M	USD	Point-in-time
Other acquired intangibles, accumulated amortization	`FiniteLivedIntangibleAssetsAccumulatedAmortization`	$26.81M	USD	Point-in-time
Trade accounts receivable, net of allowance for doubtful accounts of $293 and $0 as of December 31, 2020 and 2019	`AccountsReceivableNetCurrent`	$145.67M	USD	Point-in-time
Inventories, net	`InventoryNet`	$108.05M	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Inventories, net	`InventoryNet`	$150.89M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$77.72M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$106.25M	USD	Point-in-time
Current assets - discontinued operations	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$10.94M	USD	Point-in-time
Current assets - discontinued operations	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$45.89M	USD	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Total current assets	`AssetsCurrent`	$711.48M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$510.13M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	50.00M	shares	Point-in-time
Property, plant, and equipment, net of accumulated depreciation and amortization of $382,423 and $256,378 as of December 31, 2020 and 2019	`PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization`	$436.40M	USD	Point-in-time
Property, plant, and equipment, net of accumulated depreciation and amortization of $382,423 and $256,378 as of December 31, 2020 and 2019	`PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization`	$363.62M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	50.00M	shares	Point-in-time
Owned and leased mineral rights, net of accumulated depletion and amortization of $35,143 and $27,548 as of December 31, 2020 and 2019	`MineralRights`	$463.25M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	20.60M	shares	Point-in-time
Owned and leased mineral rights, net of accumulated depletion and amortization of $35,143 and $27,548 as of December 31, 2020 and 2019	`MineralRights`	$523.01M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	20.50M	shares	Point-in-time
Other acquired intangibles, net of accumulated amortization of $25,700 and $26,806 as of December 31, 2020 and 2019	`IntangibleAssetsNetExcludingGoodwill`	$88.20M	USD	Point-in-time
Other acquired intangibles, net of accumulated amortization of $25,700 and $26,806 as of December 31, 2020 and 2019	`IntangibleAssetsNetExcludingGoodwill`	$124.25M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	18.30M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	18.20M	shares	Point-in-time
Treasury stock, shares at cost (in shares)	`TreasuryStockCommonShares`	2.30M	shares	Point-in-time
Long-term restricted cash	`RestrictedCashNoncurrent`	$122.52M	USD	Point-in-time
Treasury stock, shares at cost (in shares)	`TreasuryStockCommonShares`	2.30M	shares	Point-in-time
Long-term restricted cash	`RestrictedCashNoncurrent`	$96.03M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$33.06M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	-	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$189.47M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$149.38M	USD	Point-in-time
Non-current assets - discontinued operations	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$162.62M	USD	Point-in-time
Non-current assets - discontinued operations	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$9.47M	USD	Point-in-time
Total assets	`Assets`	$2.30B	USD	Point-in-time
Total assets	`Assets`	$1.68B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$28.48M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$28.83M	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$58.41M	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$82.72M	USD	Point-in-time
Acquisition-related obligations - current	`AcquisitionRelatedObligationsCarryingAmountCurrent`	$33.64M	USD	Point-in-time
Acquisition-related obligations - current	`AcquisitionRelatedObligationsCarryingAmountCurrent`	$19.10M	USD	Point-in-time
Accrued expenses and other current liabilities	`AccruedLiabilitiesCurrent`	$139.48M	USD	Point-in-time
Accrued expenses and other current liabilities	`AccruedLiabilitiesCurrent`	$140.41M	USD	Point-in-time
Current liabilities - discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$30.83M	USD	Point-in-time
Current liabilities - discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$12.31M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$259.05M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$315.15M	USD	Point-in-time
Long-term debt	`LongTermDebtAndCapitalLeaseObligations`	$553.70M	USD	Point-in-time
Long-term debt	`LongTermDebtAndCapitalLeaseObligations`	$564.46M	USD	Point-in-time
Acquisition-related obligations - long-term	`AcquisitionRelatedObligationsCarryingAmountNoncurrent`	$20.77M	USD	Point-in-time
Acquisition-related obligations - long-term	`AcquisitionRelatedObligationsCarryingAmountNoncurrent`	$46.26M	USD	Point-in-time
Workers compensation and black lung obligations	`LiabilityDefinedBenefitPlanPostretirementBlackLungHealthCoverageandWorkersCompensationNoncurrent`	$230.08M	USD	Point-in-time
Workers compensation and black lung obligations	`LiabilityDefinedBenefitPlanPostretirementBlackLungHealthCoverageandWorkersCompensationNoncurrent`	$228.85M	USD	Point-in-time
Pension obligations	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$218.67M	USD	Point-in-time
Pension obligations	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$204.09M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$140.07M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$164.41M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$480.00K	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$422.00K	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$28.07M	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$26.82M	USD	Point-in-time
Non-current liabilities - discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$56.25M	USD	Point-in-time
Non-current liabilities - discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$29.09M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.61B	USD	Point-in-time
Total liabilities	`Liabilities`	$1.48B	USD	Point-in-time
Commitments and Contingencies (Note 23)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies (Note 23)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Preferred stock - par value $0.01, 5.0 million shares authorized, none issued	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock - par value $0.01, 5.0 million shares authorized, none issued	`PreferredStockValue`	-	USD	Point-in-time
Common stock - par value $0.01, 50.0 million shares authorized, 20.6 million issued and 18.3 million outstanding at December 31, 2020 and 20.5 million issued and 18.2 million outstanding at December 31, 2019	`CommonStockValue`	$205.00K	USD	Point-in-time
Common stock - par value $0.01, 50.0 million shares authorized, 20.6 million issued and 18.3 million outstanding at December 31, 2020 and 20.5 million issued and 18.2 million outstanding at December 31, 2019	`CommonStockValue`	$206.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$779.42M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$775.71M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-58.62M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-111.98M	USD	Point-in-time
Treasury stock, at cost: 2.3 million shares at December 31, 2020 and 2019	`TreasuryStockValue`	$107.01M	USD	Point-in-time
Treasury stock, at cost: 2.3 million shares at December 31, 2020 and 2019	`TreasuryStockValue`	$107.98M	USD	Point-in-time
(Accumulated deficit) retained earnings	`RetainedEarningsAccumulatedDeficit`	$-360.53M	USD	Point-in-time
(Accumulated deficit) retained earnings	`RetainedEarningsAccumulatedDeficit`	$86.81M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.07B	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$696.12M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$200.10M	USD	Point-in-time
Total liabilities and stockholders equity	`LiabilitiesAndStockholdersEquity`	$2.30B	USD	Point-in-time
Total liabilities and stockholders equity	`LiabilitiesAndStockholdersEquity`	$1.68B	USD	Point-in-time

Income Statement 72 line items

Line Item	Tag	Value	Unit	Period
Coal revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.41B	USD	Annual
Coal revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.00B	USD	Annual
Other revenues	`OtherIncome`	$5.35M	USD	Annual
Other revenues	`OtherIncome`	$3.06M	USD	Annual
Total revenues	`Revenues`	$1.42B	USD	Annual
Total revenues	`Revenues`	$2.00B	USD	Annual
Cost of coal sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.67B	USD	Annual
Cost of coal sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.28B	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortizationExcludingAcquiredIntangibles`	$139.88M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortizationExcludingAcquiredIntangibles`	$215.76M	USD	Annual
Accretion on asset retirement obligations	`AssetRetirementObligationAccretionExpense`	$23.86M	USD	Annual
Accretion on asset retirement obligations	`AssetRetirementObligationAccretionExpense`	$26.50M	USD	Annual
Amortization of acquired intangibles, net	`AmortizationOfIntangibleAssets`	$-3.19M	USD	Annual
Amortization of acquired intangibles, net	`AmortizationOfIntangibleAssets`	$9.21M	USD	Annual
Selling, general and administrative expenses (exclusive of depreciation, depletion and amortization shown separately above)	`SellingGeneralAndAdministrativeExpense`	$78.95M	USD	Annual
Selling, general and administrative expenses (exclusive of depreciation, depletion and amortization shown separately above)	`SellingGeneralAndAdministrativeExpense`	$57.36M	USD	Annual
Merger-related costs	`BusinessAcquisitionIntegrationandOtherRelatedCosts`	$1.09M	USD	Annual
Merger-related costs	`BusinessAcquisitionIntegrationandOtherRelatedCosts`	-	USD	Annual
Asset impairment and restructuring	`RestructuringCostsAndAssetImpairmentCharges`	$66.32M	USD	Annual
Asset impairment and restructuring	`RestructuringCostsAndAssetImpairmentCharges`	$83.88M	USD	Annual
Goodwill impairment	`GoodwillImpairmentLoss`	-	USD	Annual
Goodwill impairment	`GoodwillImpairmentLoss`	$124.35M	USD	Annual
Mark-to-market adjustment for acquisition-related obligations	`AcquisitionRelatedObligationsChangesinFairValueGainLoss`	$8.75M	USD	Annual
Mark-to-market adjustment for acquisition-related obligations	`AcquisitionRelatedObligationsChangesinFairValueGainLoss`	$3.56M	USD	Annual
Other income	`OtherOperatingIncomeExpenseNet`	$2.22M	USD	Annual
Other income	`OtherOperatingIncomeExpenseNet`	$974.00K	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$2.17B	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$1.59B	USD	Annual
Loss from operations	`OperatingIncomeLoss`	$-169.10M	USD	Annual
Loss from operations	`OperatingIncomeLoss`	$-170.69M	USD	Annual
Interest expense	`InterestExpense`	$67.52M	USD	Annual
Interest expense	`InterestExpense`	$74.53M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$7.25M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$7.03M	USD	Annual
Loss on modification and extinguishment of debt	`GainLossonExtinguishmentandModificationofDebt`	$-26.46M	USD	Annual
Loss on modification and extinguishment of debt	`GainLossonExtinguishmentandModificationofDebt`	-	USD	Annual
Equity loss in affiliates	`IncomeLossFromEquityMethodInvestments`	$-3.47M	USD	Annual
Equity loss in affiliates	`IncomeLossFromEquityMethodInvestments`	$-6.87M	USD	Annual
Miscellaneous loss, net	`OtherNonoperatingIncomeExpense`	$-1.97M	USD	Annual
Miscellaneous loss, net	`OtherNonoperatingIncomeExpense`	$-10.20M	USD	Annual
Total other expense, net	`NonoperatingIncomeExpense`	$-103.80M	USD	Annual
Total other expense, net	`NonoperatingIncomeExpense`	$-72.95M	USD	Annual
Loss from continuing operations before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-243.63M	USD	Annual
Loss from continuing operations before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-272.90M	USD	Annual
Income tax benefit	`IncomeTaxExpenseBenefit`	$-53.29M	USD	Annual
Income tax benefit	`IncomeTaxExpenseBenefit`	$-2.16M	USD	Annual
Net loss from continuing operations	`IncomeLossFromContinuingOperations`	$-219.62M	USD	Annual
Net loss from continuing operations	`IncomeLossFromContinuingOperations`	$-241.47M	USD	Annual
Loss from discontinued operations before income taxes	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax`	$-105.19M	USD	Annual
Loss from discontinued operations before income taxes	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax`	$-205.43M	USD	Annual
Income tax benefit from discontinued operations	`DiscontinuedOperationTaxEffectOfDiscontinuedOperation`	-	USD	Annual
Income tax benefit from discontinued operations	`DiscontinuedOperationTaxEffectOfDiscontinuedOperation`	$-8.48M	USD	Annual
Loss from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-96.70M	USD	Annual
Loss from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-205.43M	USD	Annual
Net loss	`NetIncomeLoss`	$-316.32M	USD	Annual
Net loss	`NetIncomeLoss`	$-446.90M	USD	Annual
Loss from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-11.68	USD	Annual
Loss from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-13.20	USD	Annual
Loss from discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-11.22	USD	Annual
Loss from discontinued operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-5.14	USD	Annual
Net loss (in dollars per share)	`EarningsPerShareBasic`	$-16.82	USD	Annual
Net loss (in dollars per share)	`EarningsPerShareBasic`	$-24.42	USD	Annual
Loss from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-11.68	USD	Annual
Loss from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-13.20	USD	Annual
Loss from discontinuing operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-5.14	USD	Annual
Loss from discontinuing operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-11.22	USD	Annual
Net los (in dollars per share)	`EarningsPerShareDiluted`	$-16.82	USD	Annual
Net los (in dollars per share)	`EarningsPerShareDiluted`	$-24.42	USD	Annual
Weighted average shares - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	18.30M	shares	Annual
Weighted average shares - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	18.81M	shares	Annual
Weighted average shares - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	18.81M	shares	Annual
Weighted average shares - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	18.30M	shares	Annual

Cash Flow Statement 111 line items

Line Item	Tag	Value	Unit	Period
Net loss	`NetIncomeLoss`	$-316.32M	USD	Annual
Net loss	`NetIncomeLoss`	$-446.90M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortizationExcludingAcquiredIntangiblesIncludingDiscontinuedOperations`	$315.16M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortizationExcludingAcquiredIntangiblesIncludingDiscontinuedOperations`	$151.46M	USD	Annual
Amortization of acquired intangibles, net	`AmortizationOfIntangiblesIncludingDiscontinuedOperations`	$-88.00K	USD	Annual
Amortization of acquired intangibles, net	`AmortizationOfIntangiblesIncludingDiscontinuedOperations`	$10.07M	USD	Annual
Accretion of acquisition-related obligations discount	`AcquisitionRelatedObligationsDiscountAccretionExpense`	$-5.52M	USD	Annual
Accretion of acquisition-related obligations discount	`AcquisitionRelatedObligationsDiscountAccretionExpense`	$-3.34M	USD	Annual
Amortization of debt issuance costs and accretion of debt discount	`AmortizationOfFinancingCostsAndDiscounts`	$14.07M	USD	Annual
Amortization of debt issuance costs and accretion of debt discount	`AmortizationOfFinancingCostsAndDiscounts`	$14.77M	USD	Annual
Mark-to-market adjustment for acquisition-related obligations	`AcquisitionRelatedObligationsChangesinFairValueGainLoss`	$8.75M	USD	Annual
Mark-to-market adjustment for acquisition-related obligations	`AcquisitionRelatedObligationsChangesinFairValueGainLoss`	$3.56M	USD	Annual
Loss on sale of business	`GainLossOnSaleOfBusiness`	-	USD	Annual
Loss on sale of business	`GainLossOnSaleOfBusiness`	$-36.11M	USD	Annual
(Gain) loss on disposal of assets	`GainLossonDispositionofAssetsIncludingCostofSales`	$2.40M	USD	Annual
(Gain) loss on disposal of assets	`GainLossonDispositionofAssetsIncludingCostofSales`	$-8.14M	USD	Annual
Gain on assets acquired in an exchange transaction	`NonmonetaryTransactionGainLossRecognizedOnTransfer`	$9.08M	USD	Annual
Gain on assets acquired in an exchange transaction	`NonmonetaryTransactionGainLossRecognizedOnTransfer`	-	USD	Annual
Accretion on asset retirement obligations	`AssetRetirementObligationAccretionExpenseIncludingAdjustmentforLiabilitiesHeldforSaleandDiscontinuedOperations`	$30.66M	USD	Annual
Accretion on asset retirement obligations	`AssetRetirementObligationAccretionExpenseIncludingAdjustmentforLiabilitiesHeldforSaleandDiscontinuedOperations`	$33.76M	USD	Annual
Employee benefit plans, net	`IncreaseDecreaseInPensionAndPostretirementObligations`	$20.85M	USD	Annual
Employee benefit plans, net	`IncreaseDecreaseInPensionAndPostretirementObligations`	$14.44M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$33.12M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-12.10M	USD	Annual
Goodwill impairment	`GoodwillImpairmentLoss`	-	USD	Annual
Goodwill impairment	`GoodwillImpairmentLoss`	$124.35M	USD	Annual
Asset impairment and restructuring	`RestructuringandAssetImpairmentChargesIncludingDiscontinuedOperations`	$83.48M	USD	Annual
Asset impairment and restructuring	`RestructuringandAssetImpairmentChargesIncludingDiscontinuedOperations`	$256.52M	USD	Annual
Loss on modification and extinguishment of debt	`GainLossonExtinguishmentandModificationofDebt`	$-26.46M	USD	Annual
Loss on modification and extinguishment of debt	`GainLossonExtinguishmentandModificationofDebt`	-	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$4.90M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$12.40M	USD	Annual
Equity loss in affiliates	`IncomeLossFromEquityMethodInvestments`	$-3.47M	USD	Annual
Equity loss in affiliates	`IncomeLossFromEquityMethodInvestments`	$-6.87M	USD	Annual
Other, net	`OtherOperatingActivitiesCashFlowStatement`	$-5.20M	USD	Annual
Other, net	`OtherOperatingActivitiesCashFlowStatement`	$-5.97M	USD	Annual
Trade accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$-47.42M	USD	Annual
Trade accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$-91.19M	USD	Annual
Inventories, net	`IncreaseDecreaseInInventories`	$-48.69M	USD	Annual
Inventories, net	`IncreaseDecreaseInInventories`	$40.69M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-28.15M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-56.67M	USD	Annual
Deposits	`IncreaseDecreaseInDepositOtherAssets`	$-15.17M	USD	Annual
Deposits	`IncreaseDecreaseInDepositOtherAssets`	$17.93M	USD	Annual
Other non-current assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$6.75M	USD	Annual
Other non-current assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$24.46M	USD	Annual
Trade accounts payable	`IncreaseDecreaseInAccountsPayable`	$-28.15M	USD	Annual
Trade accounts payable	`IncreaseDecreaseInAccountsPayable`	$-28.62M	USD	Annual
Accrued expenses and other current liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$-25.50M	USD	Annual
Accrued expenses and other current liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$15.43M	USD	Annual
Acquisition-related obligations	`IncreaseDecreaseinAcquisitionRelatedObligations`	$28.13M	USD	Annual
Acquisition-related obligations	`IncreaseDecreaseinAcquisitionRelatedObligations`	$32.56M	USD	Annual
Asset retirement obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-19.38M	USD	Annual
Asset retirement obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-111.62M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-43.83M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-33.56M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$131.88M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$129.24M	USD	Annual
Capital expenditures	`PaymentstoAcquireProductiveAssetsIncludingDiscontinuedOperations`	$153.99M	USD	Annual
Capital expenditures	`PaymentstoAcquireProductiveAssetsIncludingDiscontinuedOperations`	$192.41M	USD	Annual
Proceeds on disposal of assets	`ProceedsFromSaleOfProductiveAssets`	$2.78M	USD	Annual
Proceeds on disposal of assets	`ProceedsFromSaleOfProductiveAssets`	$4.02M	USD	Annual
Cash paid on sale of business	`CashPaidOnSaleOfBusiness`	$52.19M	USD	Annual
Cash paid on sale of business	`CashPaidOnSaleOfBusiness`	-	USD	Annual
Capital contributions to equity affiliates	`PaymentsToAcquireEquityMethodInvestmentsCapitalContributions`	$10.05M	USD	Annual
Capital contributions to equity affiliates	`PaymentsToAcquireEquityMethodInvestmentsCapitalContributions`	$3.44M	USD	Annual
Purchase of investment securities	`PaymentsToAcquireInvestments`	$21.13M	USD	Annual
Purchase of investment securities	`PaymentsToAcquireInvestments`	$92.86M	USD	Annual
Maturity of investment securities	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$16.68M	USD	Annual
Maturity of investment securities	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$100.25M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-77.00K	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-535.00K	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-209.97M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-191.75M	USD	Annual
Proceeds from borrowings on debt	`ProceedsFromIssuanceOfLongTermDebt`	$57.50M	USD	Annual
Proceeds from borrowings on debt	`ProceedsFromIssuanceOfLongTermDebt`	$544.95M	USD	Annual
Principal repayments of debt	`RepaymentsOfLongTermDebt`	$552.81M	USD	Annual
Principal repayments of debt	`RepaymentsOfLongTermDebt`	$59.77M	USD	Annual
Principal repayments of financing lease obligations	`FinanceLeasePrincipalPaymentsIncludingDiscontinuedOperations`	$3.18M	USD	Annual
Principal repayments of financing lease obligations	`FinanceLeasePrincipalPaymentsIncludingDiscontinuedOperations`	$3.65M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$6.69M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Common stock repurchases and related expenses	`PaymentsForRepurchaseOfCommonStock`	$37.62M	USD	Annual
Common stock repurchases and related expenses	`PaymentsForRepurchaseOfCommonStock`	$209.00K	USD	Annual
Principal repayments of notes payable	`RepaymentsOfNotesPayable`	$14.82M	USD	Annual
Principal repayments of notes payable	`RepaymentsOfNotesPayable`	$16.72M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$952.00K	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-22.38M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-69.69M	USD	Annual
Net decrease in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-103.11M	USD	Annual
Net decrease in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-129.57M	USD	Annual
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$477.25M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$244.57M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$347.68M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$477.25M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$244.57M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$347.68M	USD	Point-in-time
Cash paid for interest	`InterestPaidNet`	$49.29M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$51.88M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaid`	$3.04M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaid`	$5.00K	USD	Annual
Cash received for income tax refunds	`ProceedsFromIncomeTaxRefunds`	$68.80M	USD	Annual
Cash received for income tax refunds	`ProceedsFromIncomeTaxRefunds`	$72.24M	USD	Annual
Financing leases and capital financing - equipment	`CapitalLeaseObligationsIncurred`	$5.32M	USD	Annual
Financing leases and capital financing - equipment	`CapitalLeaseObligationsIncurred`	$4.41M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$7.49M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$4.11M	USD	Annual
Total cash and cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$477.25M	USD	Point-in-time
Total cash and cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$244.57M	USD	Point-in-time
Total cash and cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$347.68M	USD	Point-in-time

Stockholders Equity 16 line items

Line Item	Tag	Value	Unit	Period
Beginning balance	`StockholdersEquity`	$1.07B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$696.12M	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$200.10M	USD	Point-in-time
Net loss	`NetIncomeLoss`	$-316.32M	USD	Annual
Net loss	`NetIncomeLoss`	$-446.90M	USD	Annual
Other comprehensive loss, net	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-53.37M	USD	Annual
Other comprehensive loss, net	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-35.49M	USD	Annual
Stock-based compensation and net issuance of common stock for share vesting	`StockIssuedDuringPeriodValueSharebasedCompensationIncludingAdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriod`	$13.46M	USD	Annual
Stock-based compensation and net issuance of common stock for share vesting	`StockIssuedDuringPeriodValueSharebasedCompensationIncludingAdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriod`	$3.72M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$934.00K	USD	Annual
Shares repurchased, amount	`TreasuryStockValueAcquiredCostMethod`	$970.00K	USD	Annual
Shares repurchased, amount	`TreasuryStockValueAcquiredCostMethod`	$37.62M	USD	Annual
Warrant exercises	`StockIssuedDuringPeriodValueWarrantsExercised`	$19.00K	USD	Annual
Ending balance	`StockholdersEquity`	$1.07B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$696.12M	USD	Point-in-time
Ending balance	`StockholdersEquity`	$200.10M	USD	Point-in-time

Comprehensive Income 18 line items

Line Item	Tag	Value	Unit	Period
Net loss	`NetIncomeLoss`	$-316.32M	USD	Annual
Net loss	`NetIncomeLoss`	$-446.90M	USD	Annual
Current period actuarial loss	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-42.89M	USD	Annual
Current period actuarial loss	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-60.65M	USD	Annual
Income tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	Annual
Income tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	Annual
Current period actuarial (loss) gain, net of income tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-60.65M	USD	Annual
Current period actuarial (loss) gain, net of income tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-42.89M	USD	Annual
Less: reclassification adjustments for amounts reclassified to earnings due to amortization of net actuarial loss and settlements	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-7.41M	USD	Annual
Less: reclassification adjustments for amounts reclassified to earnings due to amortization of net actuarial loss and settlements	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-7.28M	USD	Annual
Income tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	-	USD	Annual
Income tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	-	USD	Annual
Less: reclamation adjustments for amounts reclassified to earnings due to amortization of net actuarial (gain) loss and settlements, net of income tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-7.41M	USD	Annual
Less: reclamation adjustments for amounts reclassified to earnings due to amortization of net actuarial (gain) loss and settlements, net of income tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-7.28M	USD	Annual
Total other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-53.37M	USD	Annual
Total other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-35.49M	USD	Annual
Total comprehensive loss	`ComprehensiveIncomeNetOfTax`	$-500.27M	USD	Annual
Total comprehensive loss	`ComprehensiveIncomeNetOfTax`	$-351.81M	USD	Annual

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