$ARCH
ARCH RESOURCES, INC.

2020 Q4 Form 10-Q Financial Statement

#000155837020011693 Filed on October 23, 2020

View on sec.gov

Income Statement

Concept 2020 Q4 2020 Q3 2019 Q4
Revenue $360.6M $382.3M $549.5M
YoY Change -34.37% -38.29% -15.59%
Cost Of Revenue $341.6M $345.5M $492.5M
YoY Change -30.64% -29.63% -4.18%
Gross Profit $19.00M -$187.7M $23.14M
YoY Change -17.91% -276.26% -77.17%
Gross Profit Margin 5.27% -49.1% 4.21%
Selling, General & Admin $18.40M $21.54M $21.90M
YoY Change -15.98% -12.31% -17.98%
% of Gross Profit 96.84% 94.62%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization $27.50M $32.63M $29.90M
YoY Change -8.03% 7.87% 8.33%
% of Gross Profit 144.74% 129.19%
Operating Expenses $45.30M $21.54M $46.60M
YoY Change -2.79% -95.8% -26.5%
Operating Profit -$26.30M -$190.2M -$6.960M
YoY Change 277.87% -279.21% -108.05%
Interest Expense -$6.200M $2.989M -$3.200M
YoY Change 93.75% -26.18% -131.07%
% of Operating Profit
Other Income/Expense, Net -$800.0K -$878.0K $100.0K
YoY Change -900.0% -190.05% -110.0%
Pretax Income -$78.30M -$191.1M -$8.800M
YoY Change 789.77% -278.39% -110.64%
Income Tax $200.0K $379.0K -$300.0K
% Of Pretax Income
Net Earnings -$78.50M -$191.5M -$8.551M
YoY Change 818.02% -279.33% -109.93%
Net Earnings / Revenue -21.77% -50.09% -1.56%
Basic Earnings Per Share -$12.64
Diluted Earnings Per Share -$5.164M -$12.64 -$0.57
COMMON SHARES
Basic Shares Outstanding 15.15M 15.15M 15.04M shares
Diluted Shares Outstanding 15.15M

Balance Sheet

Concept 2020 Q4 2020 Q3 2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments $284.3M $219.8M $288.7M
YoY Change -1.53% -37.47% -32.51%
Cash & Equivalents $187.5M $156.7M $153.0M
Short-Term Investments $96.77M $63.13M $135.7M
Other Short-Term Assets $58.00M $55.71M $97.89M
YoY Change -40.75% -50.92% 29.23%
Inventory $126.0M $143.4M $130.9M
Prepaid Expenses
Receivables $110.9M $127.3M $168.1M
Other Receivables $3.000M $3.000M $21.00M
Total Short-Term Assets $588.1M $563.0M $706.7M
YoY Change -16.78% -35.06% -19.58%
LONG-TERM ASSETS
Property, Plant & Equipment $1.007B $964.5M $984.5M
YoY Change 2.32% 8.45% 17.93%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments $71.78M $70.28M $105.6M
YoY Change -32.02% -34.65% 0.87%
Other Assets $55.25M $55.61M $70.91M
YoY Change -22.09% -21.45% 4.28%
Total Long-Term Assets $1.134B $1.090B $1.161B
YoY Change -2.3% 511.4% 569.37%
TOTAL ASSETS
Total Short-Term Assets $588.1M $563.0M $706.7M
Total Long-Term Assets $1.134B $1.090B $1.161B
Total Assets $1.722B $1.653B $1.868B
YoY Change -7.78% -14.54% -1.02%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $103.7M $99.11M $133.1M
YoY Change -22.03% -40.34% 3.93%
Accrued Expenses $155.3M $141.0M $157.2M
YoY Change -1.22% -12.92% -14.36%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due $32.00M $27.00M $21.00M
YoY Change 52.38% 125.0% 16.67%
Total Short-Term Liabilities $290.1M $266.1M $311.0M
YoY Change -6.72% -21.73% -5.57%
LONG-TERM LIABILITIES
Long-Term Debt $477.2M $368.3M $290.1M
YoY Change 64.52% 25.79% -3.37%
Other Long-Term Liabilities $98.91M $102.1M $82.10M
YoY Change 20.47% 9.72% 68.23%
Total Long-Term Liabilities $576.1M $470.4M $372.2M
YoY Change 54.8% 21.91% 6.64%
TOTAL LIABILITIES
Total Short-Term Liabilities $290.1M $266.1M $311.0M
Total Long-Term Liabilities $576.1M $470.4M $372.2M
Total Liabilities $1.439B $1.288B $1.227B
YoY Change 17.25% 4.76% 3.8%
SHAREHOLDERS EQUITY
Retained Earnings $378.9M $457.4M $731.4M
YoY Change -48.2% -38.76% 38.62%
Common Stock $767.7M $744.4M $730.8M
YoY Change 5.05% 1.26% 1.82%
Preferred Stock
YoY Change
Treasury Stock (at cost) $827.4M $827.4M $827.4M
YoY Change 0.0% 1.29% 41.7%
Treasury Stock Shares $10.09M $10.09M $10.09M
Shareholders Equity $283.6M $365.6M $640.5M
YoY Change
Total Liabilities & Shareholders Equity $1.722B $1.653B $1.868B
YoY Change -7.78% -14.54% -1.02%

Cashflow Statement

Concept 2020 Q4 2020 Q3 2019 Q4
OPERATING ACTIVITIES
Net Income -$78.50M -$191.5M -$8.551M
YoY Change 818.02% -279.33% -109.93%
Depreciation, Depletion And Amortization $27.50M $32.63M $29.90M
YoY Change -8.03% 7.87% 8.33%
Cash From Operating Activities $5.200M $30.00M $85.60M
YoY Change -93.93% -72.27% -43.65%
INVESTING ACTIVITIES
Capital Expenditures -$80.30M $57.10M -$129.0M
YoY Change -37.75% 15.47% 225.76%
Acquisitions
YoY Change
Other Investing Activities -$33.80M $3.500M $43.90M
YoY Change -176.99% -123.81% -44000.0%
Cash From Investing Activities -$114.1M -$53.60M -$85.10M
YoY Change 34.08% -16.64% 114.36%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 131.7M 44.20M -22.90M
YoY Change -675.11% -143.81% -75.35%
NET CHANGE
Cash From Operating Activities 5.200M 30.00M 85.60M
Cash From Investing Activities -114.1M -53.60M -85.10M
Cash From Financing Activities 131.7M 44.20M -22.90M
Net Change In Cash 22.80M 20.60M -22.40M
YoY Change -201.79% -136.14% -216.06%
FREE CASH FLOW
Cash From Operating Activities $5.200M $30.00M $85.60M
Capital Expenditures -$80.30M $57.10M -$129.0M
Free Cash Flow $85.50M -$27.10M $214.6M
YoY Change -60.16% -146.13% 12.06%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
553000
CY2019Q3 us-gaap Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
P0Y
dei Entity Central Index Key
EntityCentralIndexKey
0001037676
dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2020
dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
Q3
dei Amendment Flag
AmendmentFlag
false
CY2020Q3 us-gaap Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List
OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
us-gaap:OtherAssetsNoncurrent
CY2020Q3 us-gaap Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List
FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
us-gaap:OtherAssetsNoncurrent
dei Document Type
DocumentType
10-Q
dei Document Quarterly Report
DocumentQuarterlyReport
true
dei Document Period End Date
DocumentPeriodEndDate
2020-09-30
dei Document Transition Report
DocumentTransitionReport
false
dei Entity File Number
EntityFileNumber
1-13105
dei Entity Registrant Name
EntityRegistrantName
Arch Resources, Inc.
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1107014000
dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
DE
dei Entity Tax Identification Number
EntityTaxIdentificationNumber
43-0921172
dei Entity Address Address Line1
EntityAddressAddressLine1
One CityPlace Drive
dei Entity Address Address Line2
EntityAddressAddressLine2
Suite 300
dei Entity Address City Or Town
EntityAddressCityOrTown
St. Louis
dei Entity Address Postal Zip Code
EntityAddressPostalZipCode
63141
dei City Area Code
CityAreaCode
314
dei Local Phone Number
LocalPhoneNumber
994-2700
dei Entity Address State Or Province
EntityAddressStateOrProvince
MO
dei Security12b Title
Security12bTitle
Common stock, $.01 par value
dei Trading Symbol
TradingSymbol
ARCH
dei Security Exchange Name
SecurityExchangeName
NYSE
dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
dei Entity Interactive Data Current
EntityInteractiveDataCurrent
Yes
dei Entity Filer Category
EntityFilerCategory
Large Accelerated Filer
dei Entity Small Business
EntitySmallBusiness
false
dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
false
dei Entity Shell Company
EntityShellCompany
false
CY2020Q4 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
15147289
CY2020Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
382261000
CY2019Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
619467000
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1107014000
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1744872000
CY2020Q3 us-gaap Cost Of Goods And Service Excluding Depreciation Depletion And Amortization
CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
345539000
CY2019Q3 us-gaap Cost Of Goods And Service Excluding Depreciation Depletion And Amortization
CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
491004000
us-gaap Cost Of Goods And Service Excluding Depreciation Depletion And Amortization
CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
1036886000
us-gaap Cost Of Goods And Service Excluding Depreciation Depletion And Amortization
CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
1380563000
CY2020Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
32630000
CY2019Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
30249000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
94105000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
82122000
CY2020Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
4947000
CY2019Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
5137000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
14939000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
15411000
CY2020Q3 aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
2649000
CY2019Q3 aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
1530000
aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
3263000
aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
-19851000
CY2020Q3 us-gaap Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
21541000
CY2019Q3 us-gaap Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
24566000
us-gaap Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
64024000
us-gaap Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
73864000
CY2020Q3 aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
4423000
CY2019Q3 aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
3754000
aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
15938000
aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
6772000
CY2020Q3 us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
CY2020Q3 us-gaap Severance Costs1
SeveranceCosts1
18000
us-gaap Severance Costs1
SeveranceCosts1
13283000
us-gaap Gain On Business Interruption Insurance Recovery
GainOnBusinessInterruptionInsuranceRecovery
23518000
us-gaap Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
1369000
us-gaap Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
-4304000
CY2019Q3 us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
39000000
us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
39000000
CY2020Q3 us-gaap Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
4894000
CY2019Q3 us-gaap Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
4254000
us-gaap Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
16768000
us-gaap Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
9143000
CY2020Q3 aci Operating Cost Expenses And Others
OperatingCostExpensesAndOthers
569941000
CY2019Q3 aci Operating Cost Expenses And Others
OperatingCostExpensesAndOthers
512986000
aci Operating Cost Expenses And Others
OperatingCostExpensesAndOthers
1363871000
aci Operating Cost Expenses And Others
OperatingCostExpensesAndOthers
1495042000
CY2020Q3 us-gaap Gross Profit
GrossProfit
-187680000
CY2019Q3 us-gaap Gross Profit
GrossProfit
106481000
us-gaap Gross Profit
GrossProfit
-256857000
us-gaap Gross Profit
GrossProfit
249830000
CY2020Q3 us-gaap Interest Expense
InterestExpense
2989000
CY2019Q3 us-gaap Interest Expense
InterestExpense
4049000
us-gaap Interest Expense
InterestExpense
9900000
us-gaap Interest Expense
InterestExpense
12856000
CY2020Q3 us-gaap Other Nonoperating Income
OtherNonoperatingIncome
459000
CY2019Q3 us-gaap Other Nonoperating Income
OtherNonoperatingIncome
3709000
us-gaap Other Nonoperating Income
OtherNonoperatingIncome
3511000
us-gaap Other Nonoperating Income
OtherNonoperatingIncome
7940000
CY2020Q3 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-2530000
CY2019Q3 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-340000
us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-6389000
us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-4916000
CY2020Q3 us-gaap Operating Income Loss
OperatingIncomeLoss
-190210000
CY2019Q3 us-gaap Operating Income Loss
OperatingIncomeLoss
106141000
us-gaap Operating Income Loss
OperatingIncomeLoss
-263246000
us-gaap Operating Income Loss
OperatingIncomeLoss
244914000
CY2020Q3 us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
878000
CY2019Q3 us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
-975000
us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
3076000
us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
2127000
us-gaap Nondebtor Reorganization Items Net Gain Loss On Settlement Of Other Claims1
NondebtorReorganizationItemsNetGainLossOnSettlementOfOtherClaims1
26000
us-gaap Nondebtor Reorganization Items Net Gain Loss On Settlement Of Other Claims1
NondebtorReorganizationItemsNetGainLossOnSettlementOfOtherClaims1
71000
CY2020Q3 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
-878000
CY2019Q3 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
975000
us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
-3050000
us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
-2056000
CY2020Q3 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-191088000
CY2019Q3 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
107116000
us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-266296000
us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
242858000
CY2020Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
379000
CY2019Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
347000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
-206000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
508000
CY2020Q3 us-gaap Net Income Loss
NetIncomeLoss
-191467000
us-gaap Net Income Loss
NetIncomeLoss
242350000
CY2019Q3 us-gaap Net Income Loss
NetIncomeLoss
106769000
us-gaap Net Income Loss
NetIncomeLoss
-266090000
us-gaap Net Income Loss
NetIncomeLoss
242350000
CY2020Q3 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-12.64
CY2019Q3 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
6.79
us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-17.57
us-gaap Earnings Per Share Basic
EarningsPerShareBasic
14.61
CY2020Q3 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-12.64
CY2019Q3 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
6.34
us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-17.57
us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
13.66
CY2020Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15147000
CY2019Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15736000
us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15144000
us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
16591000
CY2020Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
15147000
CY2019Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
16852000
us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
15144000
us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
17744000
CY2019Q3 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.45
us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.50
us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
1.35
CY2020Q3 us-gaap Net Income Loss
NetIncomeLoss
-191467000
CY2019Q3 us-gaap Net Income Loss
NetIncomeLoss
106769000
us-gaap Net Income Loss
NetIncomeLoss
-266090000
CY2020Q3 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent
476000
CY2019Q3 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent
-2360000
us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent
-1830000
us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent
-2421000
CY2020Q3 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
476000
CY2019Q3 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
-2360000
us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
-1830000
us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
-2421000
CY2020Q3 us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent
-4164000
CY2019Q3 us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent
4019000
us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent
12439000
us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent
1117000
CY2020Q3 us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
-4164000
CY2019Q3 us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
4019000
us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
12439000
us-gaap Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
1117000
CY2020Q3 us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent
-255000
CY2019Q3 us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent
-98000
us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent
-189000
us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent
553000
CY2020Q3 us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
-255000
CY2019Q3 us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
-98000
us-gaap Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
-189000
CY2020Q3 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
4385000
CY2019Q3 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
-6477000
us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
-14458000
us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
-2985000
CY2020Q3 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-187082000
CY2019Q3 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
100292000
us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-280548000
us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
239365000
CY2020Q3 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
156655000
CY2019Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
153020000
CY2020Q3 us-gaap Available For Sale Securities Debt Securities Current
AvailableForSaleSecuritiesDebtSecuritiesCurrent
63128000
CY2019Q4 us-gaap Available For Sale Securities Debt Securities Current
AvailableForSaleSecuritiesDebtSecuritiesCurrent
135667000
CY2020Q3 us-gaap Restricted Cash Current
RestrictedCashCurrent
13919000
CY2020Q3 us-gaap Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
1303000
CY2020Q3 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
127292000
CY2019Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
168125000
CY2020Q3 us-gaap Other Receivables
OtherReceivables
2880000
CY2019Q4 us-gaap Other Receivables
OtherReceivables
21143000
CY2020Q3 us-gaap Inventory Net
InventoryNet
143396000
CY2019Q4 us-gaap Inventory Net
InventoryNet
130898000
CY2020Q3 us-gaap Other Assets Current
OtherAssetsCurrent
55712000
CY2019Q4 us-gaap Other Assets Current
OtherAssetsCurrent
97894000
CY2020Q3 us-gaap Assets Current
AssetsCurrent
562982000
CY2019Q4 us-gaap Assets Current
AssetsCurrent
706747000
CY2020Q3 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
964472000
CY2019Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
984509000
CY2020Q3 us-gaap Equity Method Investments
EquityMethodInvestments
70275000
CY2019Q4 us-gaap Equity Method Investments
EquityMethodInvestments
105588000
CY2020Q3 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
55608000
CY2019Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
70912000
CY2020Q3 aci Other Assets Non Current Total
OtherAssetsNonCurrentTotal
125883000
CY2019Q4 aci Other Assets Non Current Total
OtherAssetsNonCurrentTotal
176500000
CY2020Q3 us-gaap Assets
Assets
1653337000
CY2019Q4 us-gaap Assets
Assets
1867756000
CY2020Q3 us-gaap Accounts Payable Current
AccountsPayableCurrent
99110000
CY2019Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
133060000
CY2020Q3 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
141021000
CY2019Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
157167000
CY2020Q3 us-gaap Debt Current
DebtCurrent
25987000
CY2019Q4 us-gaap Debt Current
DebtCurrent
20753000
CY2020Q3 us-gaap Liabilities Current
LiabilitiesCurrent
266118000
CY2019Q4 us-gaap Liabilities Current
LiabilitiesCurrent
310980000
CY2020Q3 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
368278000
CY2019Q4 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
290066000
CY2020Q3 us-gaap Mine Reclamation And Closing Liability Noncurrent
MineReclamationAndClosingLiabilityNoncurrent
239614000
CY2019Q4 us-gaap Mine Reclamation And Closing Liability Noncurrent
MineReclamationAndClosingLiabilityNoncurrent
242432000
CY2020Q3 us-gaap Defined Benefit Pension Plan Liabilities Noncurrent
DefinedBenefitPensionPlanLiabilitiesNoncurrent
6108000
us-gaap Increase Decrease In Receivables
IncreaseDecreaseInReceivables
-47416000
us-gaap Increase Decrease In Other Accounts Payable And Accrued Liabilities
IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
-50474000
us-gaap Increase Decrease In Receivables
IncreaseDecreaseInReceivables
4622000
us-gaap Increase Decrease In Inventories
IncreaseDecreaseInInventories
12499000
us-gaap Increase Decrease In Inventories
IncreaseDecreaseInInventories
46073000
CY2019Q4 us-gaap Defined Benefit Pension Plan Liabilities Noncurrent
DefinedBenefitPensionPlanLiabilitiesNoncurrent
5476000
CY2020Q3 us-gaap Other Postretirement Defined Benefit Plan Liabilities Noncurrent
OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
85642000
CY2019Q4 us-gaap Other Postretirement Defined Benefit Plan Liabilities Noncurrent
OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
80567000
CY2020Q3 us-gaap Workers Compensation Liability Noncurrent
WorkersCompensationLiabilityNoncurrent
219851000
CY2019Q4 us-gaap Workers Compensation Liability Noncurrent
WorkersCompensationLiabilityNoncurrent
215599000
CY2020Q3 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
102080000
CY2019Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
82100000
CY2020Q3 us-gaap Liabilities
Liabilities
1287691000
CY2019Q4 us-gaap Liabilities
Liabilities
1227220000
CY2020Q3 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.01
CY2019Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.01
CY2020Q3 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2019Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2020Q3 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
25235000
CY2019Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
25220000
CY2020Q3 us-gaap Common Stock Value
CommonStockValue
252000
CY2019Q4 us-gaap Common Stock Value
CommonStockValue
252000
CY2020Q3 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
744112000
CY2019Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
730551000
CY2020Q3 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
457432000
CY2019Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
731425000
CY2020Q3 us-gaap Treasury Stock Shares
TreasuryStockShares
10088000
CY2019Q4 us-gaap Treasury Stock Shares
TreasuryStockShares
10088000
CY2020Q3 us-gaap Treasury Stock Value
TreasuryStockValue
827381000
CY2019Q4 us-gaap Treasury Stock Value
TreasuryStockValue
827381000
CY2020Q3 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-8769000
CY2019Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
5689000
CY2020Q3 us-gaap Stockholders Equity
StockholdersEquity
365646000
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
640536000
CY2020Q3 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
1653337000
CY2019Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
1867756000
us-gaap Net Income Loss
NetIncomeLoss
-266090000
us-gaap Net Income Loss
NetIncomeLoss
242350000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
94105000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
82122000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
14939000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
15411000
us-gaap Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
-14227000
us-gaap Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
-13680000
us-gaap Share Based Compensation
ShareBasedCompensation
13907000
us-gaap Share Based Compensation
ShareBasedCompensation
17305000
us-gaap Amortization Of Financing Costs And Discounts
AmortizationOfFinancingCostsAndDiscounts
3189000
us-gaap Amortization Of Financing Costs And Discounts
AmortizationOfFinancingCostsAndDiscounts
2757000
us-gaap Gain On Business Interruption Insurance Recovery
GainOnBusinessInterruptionInsuranceRecovery
23518000
us-gaap Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax
DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
3460000
us-gaap Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax
DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
818000
us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
39000000
us-gaap Increase Decrease In Other Accounts Payable And Accrued Liabilities
IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
1569000
us-gaap Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable
IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable
22855000
us-gaap Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable
IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable
32440000
us-gaap Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
-38229000
us-gaap Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
-16932000
us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
55914000
us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
334053000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
205661000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
137396000
us-gaap Payments To Acquire Royalty Interests In Mining Properties
PaymentsToAcquireRoyaltyInterestsInMiningProperties
1186000
us-gaap Payments To Acquire Royalty Interests In Mining Properties
PaymentsToAcquireRoyaltyInterestsInMiningProperties
1187000
aci Proceeds From Consideration Paid For Disposals And Divestitures
ProceedsFromConsiderationPaidForDisposalsAndDivestitures
856000
aci Proceeds From Consideration Paid For Disposals And Divestitures
ProceedsFromConsiderationPaidForDisposalsAndDivestitures
1799000
us-gaap Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
76593000
us-gaap Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
158578000
us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
148670000
us-gaap Proceeds From Sale And Maturity Of Available For Sale Securities
ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
146170000
aci Purchases Of Investments Advances To Affiliates
PurchasesOfInvestmentsAdvancesToAffiliates
1549000
aci Purchases Of Investments Advances To Affiliates
PurchasesOfInvestmentsAdvancesToAffiliates
4810000
us-gaap Proceeds From Insurance Settlement Investing Activities
ProceedsFromInsuranceSettlementInvestingActivities
23518000
us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-111945000
us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-154002000
us-gaap Proceeds From Repayments Of Other Long Term Debt
ProceedsFromRepaymentsOfOtherLongTermDebt
-2250000
us-gaap Proceeds From Repayments Of Other Long Term Debt
ProceedsFromRepaymentsOfOtherLongTermDebt
-2250000
aci Proceeds From Equipment Financing
ProceedsFromEquipmentFinancing
53611000
us-gaap Proceeds From Issuance Of Debt
ProceedsFromIssuanceOfDebt
53090000
us-gaap Proceeds From Repayments Of Other Debt
ProceedsFromRepaymentsOfOtherDebt
-19347000
us-gaap Proceeds From Repayments Of Other Debt
ProceedsFromRepaymentsOfOtherDebt
-12077000
us-gaap Payments Of Financing Costs
PaymentsOfFinancingCosts
3528000
us-gaap Payments Of Ordinary Dividends
PaymentsOfOrdinaryDividends
7645000
us-gaap Payments Of Ordinary Dividends
PaymentsOfOrdinaryDividends
22264000
us-gaap Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
232999000
us-gaap Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
346000
us-gaap Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
30000
us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
73585000
us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
-269560000
us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
17554000
us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-89509000
CY2020Q2 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
153020000
CY2018Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
264937000
CY2020Q3 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
170574000
CY2019Q3 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
175428000
CY2020Q3 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
156655000
CY2019Q3 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
175428000
CY2020Q3 us-gaap Restricted Cash Current
RestrictedCashCurrent
13919000
CY2020Q3 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
170574000
CY2019Q3 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
175428000
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
640536000
CY2020Q1 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.50
aci Effective Income Tax Rate Reconciliation Amt Refund Amount
EffectiveIncomeTaxRateReconciliationAmtRefundAmount
-1171000
CY2020Q1 us-gaap Dividends
Dividends
7834000
CY2020Q1 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-42702000
CY2020Q1 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
4045000
CY2020Q1 us-gaap Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
281000
CY2020Q1 us-gaap Stockholders Equity
StockholdersEquity
593764000
CY2020Q2 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-50764000
us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
4891000
us-gaap Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
50000
aci Dividend Equivalents Earned Equity Instruments Other Than Options Grants
DividendEquivalentsEarnedEquityInstrumentsOtherThanOptionsGrants
59000
CY2020Q2 us-gaap Stockholders Equity
StockholdersEquity
547782000
CY2020Q3 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-187082000
CY2020Q3 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
4971000
CY2020Q3 us-gaap Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
15000
CY2020Q3 aci Dividend Equivalents Earned Equity Instruments Other Than Options Grants
DividendEquivalentsEarnedEquityInstrumentsOtherThanOptionsGrants
10000
CY2020Q3 us-gaap Stockholders Equity
StockholdersEquity
365646000
CY2018Q4 us-gaap Stockholders Equity
StockholdersEquity
704821000
CY2019Q1 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.45
CY2019Q1 us-gaap Dividends
Dividends
8111000
CY2019Q1 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
75835000
CY2019Q1 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
5651000
CY2019Q1 us-gaap Stock Issued During Period Shares Employee Stock Purchase Plans
StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
872317
CY2019Q1 us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
78249000
CY2019Q1 us-gaap Stockholders Equity
StockholdersEquity
699947000
CY2019Q2 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.45
CY2019Q2 us-gaap Dividends
Dividends
7696000
CY2019Q2 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
63238000
CY2019Q2 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
5822000
CY2019Q2 us-gaap Stock Issued During Period Shares Employee Stock Purchase Plans
StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
697255
CY2019Q2 us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
63392000
CY2019Q2 us-gaap Adjustments To Additional Paid In Capital Warrant Issued
AdjustmentsToAdditionalPaidInCapitalWarrantIssued
31000
CY2019Q2 us-gaap Stockholders Equity
StockholdersEquity
697950000
CY2019Q3 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.45
CY2019Q3 us-gaap Dividends
Dividends
7281000
CY2019Q3 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
100292000
CY2019Q3 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
5833000
CY2019Q3 us-gaap Stock Issued During Period Shares Employee Stock Purchase Plans
StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
1169597
CY2019Q3 us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
91358000
CY2019Q3 us-gaap Stockholders Equity
StockholdersEquity
705436000
CY2020Q3 us-gaap Derivative Assets Liabilities At Fair Value Net
DerivativeAssetsLiabilitiesAtFairValueNet
2612000
CY2020Q2 aci Insurance Recovery Systems Not Recoverable
InsuranceRecoverySystemsNotRecoverable
123
us-gaap Severance Costs1
SeveranceCosts1
13300000
aci Number Of Corporate Staff Accepted Voluntary Separation Package
NumberOfCorporateStaffAcceptedVoluntarySeparationPackage
53
CY2020Q2 aci Number Of Employees Accepted Voluntary Separation Package
NumberOfEmployeesAcceptedVoluntarySeparationPackage
201
us-gaap Bankruptcy Claims Amount Of Claims Filed
BankruptcyClaimsAmountOfClaimsFiled
4300000
CY2020Q3 aci Impairment Of Coal Lands And Mineral Rights
ImpairmentOfCoalLandsAndMineralRights
33197000
CY2020Q3 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
43197000
CY2020Q3 aci Impairment Of Deferred Development Costs
ImpairmentOfDeferredDevelopmentCosts
50527000
CY2020Q3 us-gaap Equity Method Investment Other Than Temporary Impairment
EquityMethodInvestmentOtherThanTemporaryImpairment
36167000
CY2020Q3 us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
us-gaap Other Comprehensive Income Loss Before Reclassifications Net Of Tax
OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
-14421000
us-gaap Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
37000
CY2020Q3 us-gaap Energy Related Inventory Coal
EnergyRelatedInventoryCoal
56889000
CY2019Q4 us-gaap Energy Related Inventory Coal
EnergyRelatedInventoryCoal
46815000
CY2020Q3 us-gaap Inventory Parts And Components Net Of Reserves
InventoryPartsAndComponentsNetOfReserves
86507000
CY2019Q4 us-gaap Inventory Parts And Components Net Of Reserves
InventoryPartsAndComponentsNetOfReserves
84083000
CY2020Q3 us-gaap Inventory Net
InventoryNet
143396000
CY2019Q4 us-gaap Inventory Net
InventoryNet
130898000
CY2020Q3 us-gaap Inventory Valuation Reserves
InventoryValuationReserves
2500000
CY2019Q4 us-gaap Inventory Valuation Reserves
InventoryValuationReserves
2200000
CY2020Q3 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
63337000
CY2020Q3 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
14000
CY2020Q3 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
223000
CY2020Q3 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
63128000
CY2019Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
135687000
CY2019Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
201000
CY2019Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
221000
CY2019Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
135667000
CY2020Q3 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
48500000
CY2019Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
72300000
CY2020Q3 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
9600000
CY2019Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
0.0
CY2020Q4 aci Value Of Trading Portfolio Realized Gain Loss
ValueOfTradingPortfolioRealizedGainLoss
-200000
CY2020Q3 us-gaap Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
10422000
CY2020Q3 us-gaap Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
7810000
CY2019Q4 us-gaap Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
31616000
CY2019Q4 us-gaap Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
25870000
CY2020Q3 us-gaap Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
7757000
CY2020Q3 us-gaap Derivative Liability Fair Value Gross Asset
DerivativeLiabilityFairValueGrossAsset
7757000
CY2019Q4 us-gaap Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
25759000
CY2019Q4 us-gaap Derivative Liability Fair Value Gross Asset
DerivativeLiabilityFairValueGrossAsset
25759000
CY2020Q3 aci Derivative Asset Excluding Interest Rate Swaps
DerivativeAssetExcludingInterestRateSwaps
2665000
CY2020Q3 us-gaap Derivative Liabilities
DerivativeLiabilities
53000
CY2019Q4 aci Derivative Asset Excluding Interest Rate Swaps
DerivativeAssetExcludingInterestRateSwaps
5857000
CY2019Q4 us-gaap Derivative Liabilities
DerivativeLiabilities
111000
CY2019Q4 us-gaap Derivative Assets Liabilities At Fair Value Net
DerivativeAssetsLiabilitiesAtFairValueNet
5746000
CY2020Q3 us-gaap Derivative Assets Liabilities At Fair Value Net
DerivativeAssetsLiabilitiesAtFairValueNet
2612000
CY2019Q4 us-gaap Derivative Assets Liabilities At Fair Value Net
DerivativeAssetsLiabilitiesAtFairValueNet
5746000
CY2020Q3 us-gaap Derivative Collateral Obligation To Return Cash
DerivativeCollateralObligationToReturnCash
2100000
CY2019Q4 us-gaap Derivative Collateral Obligation To Return Cash
DerivativeCollateralObligationToReturnCash
4400000
CY2020Q3 aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
2649000
CY2019Q3 aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
1530000
aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
3263000
aci Change In Fair Value Of Coal Derivatives And Coal Trading Activities Net
ChangeInFairValueOfCoalDerivativesAndCoalTradingActivitiesNet
-19851000
CY2020Q3 us-gaap Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net
InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet
100000
CY2020Q3 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
44348000
CY2019Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
50929000
CY2020Q3 us-gaap Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
60953000
CY2019Q4 us-gaap Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
69061000
CY2020Q3 us-gaap Interest Payable Current
InterestPayableCurrent
799000
CY2019Q4 us-gaap Interest Payable Current
InterestPayableCurrent
133000
CY2020Q3 us-gaap Workers Compensation Liability Current
WorkersCompensationLiabilityCurrent
15282000
CY2019Q4 us-gaap Workers Compensation Liability Current
WorkersCompensationLiabilityCurrent
16119000
CY2020Q3 us-gaap Asset Retirement Obligation Current
AssetRetirementObligationCurrent
9827000
CY2019Q4 us-gaap Asset Retirement Obligation Current
AssetRetirementObligationCurrent
10366000
CY2020Q3 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
9812000
CY2019Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
10559000
CY2020Q3 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
141021000
CY2019Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
157167000
us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
0
us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
-56000
CY2020Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
379000
CY2019Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
347000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
-206000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
508000
CY2020Q2 us-gaap Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority
IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority
37400000
CY2020Q3 aci Income Tax Refund Reserve
IncomeTaxRefundReserve
13300000
CY2020Q3 us-gaap Deferred Finance Costs Net
DeferredFinanceCostsNet
6914000
CY2019Q4 us-gaap Deferred Finance Costs Net
DeferredFinanceCostsNet
5013000
CY2020Q3 us-gaap Long Term Debt
LongTermDebt
394265000
CY2019Q4 us-gaap Long Term Debt
LongTermDebt
310819000
CY2020Q3 us-gaap Debt Current
DebtCurrent
25987000
CY2019Q4 us-gaap Debt Current
DebtCurrent
20753000
CY2020Q3 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
368278000
CY2019Q4 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
290066000
aci Letters Of Credit Additional Borrowing Capacity
LettersOfCreditAdditionalBorrowingCapacity
14800000
CY2020Q3 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-40128000
CY2019Q3 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
22494000
us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-55922000
us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
51000000
CY2020Q3 us-gaap Income Tax Reconciliation Nondeductible Expense Depletion
IncomeTaxReconciliationNondeductibleExpenseDepletion
2242000
CY2019Q3 us-gaap Income Tax Reconciliation Nondeductible Expense Depletion
IncomeTaxReconciliationNondeductibleExpenseDepletion
-6347000
us-gaap Income Tax Reconciliation Nondeductible Expense Depletion
IncomeTaxReconciliationNondeductibleExpenseDepletion
-3358000
us-gaap Income Tax Reconciliation Nondeductible Expense Depletion
IncomeTaxReconciliationNondeductibleExpenseDepletion
-14111000
CY2020Q3 us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
-2695000
CY2019Q3 us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
1825000
us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
-4197000
us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
3668000
CY2020Q3 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
40734000
CY2019Q3 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
-19120000
us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
61115000
us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
-42925000
CY2020Q3 us-gaap Income Tax Reconciliation Tax Settlements
IncomeTaxReconciliationTaxSettlements
226000
CY2019Q3 us-gaap Income Tax Reconciliation Tax Settlements
IncomeTaxReconciliationTaxSettlements
1495000
us-gaap Income Tax Reconciliation Tax Settlements
IncomeTaxReconciliationTaxSettlements
3327000
us-gaap Income Tax Reconciliation Tax Settlements
IncomeTaxReconciliationTaxSettlements
2932000
CY2020Q3 aci Income Tax Refund Reserve Percentage Of Total Refund Subject To Audit
IncomeTaxRefundReservePercentageOfTotalRefundSubjectToAudit
0.40
CY2020Q3 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
63128000
CY2020Q3 us-gaap Interest Rate Derivative Assets At Fair Value
InterestRateDerivativeAssetsAtFairValue
2665000
CY2020Q3 us-gaap Assets Fair Value Disclosure
AssetsFairValueDisclosure
65793000
CY2020Q3 us-gaap Interest Rate Derivative Liabilities At Fair Value
InterestRateDerivativeLiabilitiesAtFairValue
4545000
CY2020Q2 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
33000
CY2019Q4 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
61000
CY2020Q3 us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
-33000
us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
-1158000
us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
1235000
us-gaap Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Issues
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssues
138000
CY2020Q3 us-gaap Debt Instrument Fair Value
DebtInstrumentFairValue
356700000
CY2019Q4 us-gaap Debt Instrument Fair Value
DebtInstrumentFairValue
308000000.0
CY2019Q3 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
49452000
CY2020Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15147000
CY2019Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15736000
us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
15144000
us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
16591000
CY2019Q3 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
1116000
us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
1153000
CY2020Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
15147000
CY2019Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
16852000
us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
15144000
us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
17744000
CY2020Q1 aci Additional Collateral Contingent Amount Self Insured
AdditionalCollateralContingentAmountSelfInsured
71100000
CY2020Q1 aci Threshold For Number Of Days To Post Additional Collateral
ThresholdForNumberOfDaysToPostAdditionalCollateral
P30D
us-gaap Number Of Reportable Segments
NumberOfReportableSegments
2
CY2020Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
382261000
CY2020Q3 aci Adjusted Ebitda
AdjustedEBITDA
17426000
CY2020Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
32630000
CY2020Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
4947000
CY2020Q3 us-gaap Assets
Assets
1653337000
CY2020Q3 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
57100000
CY2019Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
619467000
CY2019Q3 aci Adjusted Ebitda
AdjustedEBITDA
106621000
CY2019Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
30249000
CY2019Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
5137000
CY2019Q3 us-gaap Assets
Assets
1934600000
aci Adjusted Ebitda
AdjustedEBITDA
19609000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
94105000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
14939000
CY2020Q3 us-gaap Assets
Assets
1653337000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
205661000
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1744872000
aci Adjusted Ebitda
AdjustedEBITDA
319439000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
82122000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
15411000
CY2019Q3 us-gaap Assets
Assets
1934600000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
137396000
CY2020Q3 us-gaap Net Income Loss
NetIncomeLoss
-191467000
CY2019Q3 us-gaap Net Income Loss
NetIncomeLoss
106769000
us-gaap Net Income Loss
NetIncomeLoss
-266090000
us-gaap Net Income Loss
NetIncomeLoss
242350000
CY2020Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
379000
CY2019Q3 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
347000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
-206000
us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
508000
CY2020Q3 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-2530000
CY2019Q3 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-340000
us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-6389000
us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-4916000
CY2020Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
32630000
CY2019Q3 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
30249000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
94105000
us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
82122000
CY2020Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
4947000
CY2019Q3 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
5137000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
14939000
us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
15411000
CY2020Q3 aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
4423000
CY2019Q3 aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
3754000
aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
15938000
aci Operating Income Expense Related To Jointventure
OperatingIncomeExpenseRelatedToJointventure
6772000
CY2020Q3 us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
us-gaap Asset Impairment Charges
AssetImpairmentCharges
163088000
CY2020Q3 us-gaap Severance Costs1
SeveranceCosts1
18000
us-gaap Severance Costs1
SeveranceCosts1
13283000
us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
23518000
CY2019Q3 us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
39000000
us-gaap Gain Loss Related To Litigation Settlement
GainLossRelatedToLitigationSettlement
39000000
CY2020Q3 us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
878000
CY2019Q3 us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
-975000
us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
3076000
us-gaap Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
2127000
us-gaap Nondebtor Reorganization Items Net Gain Loss On Settlement Of Other Claims1
NondebtorReorganizationItemsNetGainLossOnSettlementOfOtherClaims1
26000
us-gaap Nondebtor Reorganization Items Net Gain Loss On Settlement Of Other Claims1
NondebtorReorganizationItemsNetGainLossOnSettlementOfOtherClaims1
71000
aci Adjusted Ebitda
AdjustedEBITDA
19609000
CY2020Q3 us-gaap Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
P4Y6M
CY2019Q3 aci Adjusted Ebitda
AdjustedEBITDA
106621000
CY2020Q3 aci Adjusted Ebitda
AdjustedEBITDA
17426000
aci Adjusted Ebitda
AdjustedEBITDA
319439000
CY2020Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
382261000
CY2019Q3 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
619467000
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1107014000
us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
1744872000
CY2020Q3 aci Revenue Remaining Performance Obligation Fixed Price Volume
RevenueRemainingPerformanceObligationFixedPriceVolume
16500000
CY2020Q3 aci Revenue Remaining Performance Obligation Variable Price Volume
RevenueRemainingPerformanceObligationVariablePriceVolume
1000000.0
CY2020Q3 aci Revenue Remaining Performance Obligation Fixed Price Volume
RevenueRemainingPerformanceObligationFixedPriceVolume
83600000
CY2020Q3 aci Revenue Remaining Performance Obligation Variable Price Volume
RevenueRemainingPerformanceObligationVariablePriceVolume
5000000.0
us-gaap Operating Lease Cost
OperatingLeaseCost
846000
us-gaap Operating Lease Cost
OperatingLeaseCost
1071000
us-gaap Operating Lease Payments
OperatingLeasePayments
860000
us-gaap Operating Lease Payments
OperatingLeasePayments
1078000
CY2020Q3 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P6Y2M12D
CY2019Q3 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P6Y2M8D
CY2020Q3 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.055
CY2019Q3 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.055
aci Finance Lease Cost
FinanceLeaseCost
393000
us-gaap Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
303000
CY2020Q3 us-gaap Finance Lease Weighted Average Discount Rate Percent
FinanceLeaseWeightedAverageDiscountRatePercent
0.064
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
823000
CY2020Q3 us-gaap Finance Lease Liability Payments Remainder Of Fiscal Year
FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear
303000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
3367000
CY2020Q3 us-gaap Finance Lease Liability Payments Due Next Twelve Months
FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
1210000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
3317000
CY2020Q3 us-gaap Finance Lease Liability Payments Due Year Two
FinanceLeaseLiabilityPaymentsDueYearTwo
1210000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
3285000
CY2020Q3 us-gaap Finance Lease Liability Payments Due Year Three
FinanceLeaseLiabilityPaymentsDueYearThree
1210000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
3200000
CY2020Q3 us-gaap Finance Lease Liability Payments Due Year Four
FinanceLeaseLiabilityPaymentsDueYearFour
1210000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
7798000
CY2020Q3 us-gaap Finance Lease Liability Payments Due Year Five
FinanceLeaseLiabilityPaymentsDueYearFive
2111000
CY2020Q3 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
21790000
CY2020Q3 us-gaap Finance Lease Liability Payments Due
FinanceLeaseLiabilityPaymentsDue
7254000
CY2020Q3 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
3485000
CY2020Q3 us-gaap Finance Lease Liability Undiscounted Excess Amount
FinanceLeaseLiabilityUndiscountedExcessAmount
1173000
CY2020Q3 us-gaap Operating Lease Liability
OperatingLeaseLiability
18305000
CY2020Q3 us-gaap Finance Lease Liability
FinanceLeaseLiability
6081000
CY2020Q3 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2427000
CY2020Q3 us-gaap Finance Lease Liability Current
FinanceLeaseLiabilityCurrent
847000
CY2020Q3 us-gaap Finance Lease Liability Noncurrent
FinanceLeaseLiabilityNoncurrent
5234000
CY2020Q3 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
15878000
CY2020Q3 us-gaap Operating Lease Liability
OperatingLeaseLiability
18305000
CY2020Q3 us-gaap Finance Lease Liability
FinanceLeaseLiability
6081000
CY2020Q3 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
17600000
CY2020Q3 us-gaap Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
5900000

Files In Submission

Name View Source Status
0001558370-20-011693-index-headers.html Edgar Link pending
0001558370-20-011693-index.html Edgar Link pending
0001558370-20-011693.txt Edgar Link pending
0001558370-20-011693-xbrl.zip Edgar Link pending
arch-20200930.xsd Edgar Link pending
arch-20200930x10q.htm Edgar Link pending
arch-20200930x10q002.jpg Edgar Link pending
arch-20200930x10q_htm.xml Edgar Link completed
arch-20200930xex10d12.htm Edgar Link pending
arch-20200930xex10d6.htm Edgar Link pending
arch-20200930xex10d7.htm Edgar Link pending
arch-20200930xex31d1.htm Edgar Link pending
arch-20200930xex31d2.htm Edgar Link pending
arch-20200930xex32d1.htm Edgar Link pending
arch-20200930xex32d2.htm Edgar Link pending
arch-20200930xex95.htm Edgar Link pending
arch-20200930_cal.xml Edgar Link unprocessable
arch-20200930_def.xml Edgar Link unprocessable
arch-20200930_lab.xml Edgar Link unprocessable
arch-20200930_pre.xml Edgar Link unprocessable
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
MetaLinks.json Edgar Link pending
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R64.htm Edgar Link pending
R65.htm Edgar Link pending
R66.htm Edgar Link pending
R67.htm Edgar Link pending
R68.htm Edgar Link pending
R69.htm Edgar Link pending
R7.htm Edgar Link pending
R70.htm Edgar Link pending
R71.htm Edgar Link pending
R72.htm Edgar Link pending
R73.htm Edgar Link pending
R74.htm Edgar Link pending
R75.htm Edgar Link pending
R76.htm Edgar Link pending
R77.htm Edgar Link pending
R78.htm Edgar Link pending
R79.htm Edgar Link pending
R8.htm Edgar Link pending
R80.htm Edgar Link pending
R81.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending