$CEIX
CONSOL Energy Inc. Stock $ceix

$ceix Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000143774921002802 Filed on February 12, 2021

Income Statement

Concept	2019 Q4	2018 Q4	2018
Revenue	$342.6M	$382.2M	$1.532B
YoY Change	-10.36%	8.49%	8.51%
Cost Of Revenue	$5.600M	$5.800M	$43.60M
YoY Change	-3.45%	-73.39%	-40.84%
Gross Profit	$336.5M	$375.6M	$1.486B
YoY Change	-10.41%	15.5%	12.69%
Gross Profit Margin	98.21%	98.26%	96.98%
Selling, General & Admin	$14.21M	$17.63M	$65.35M
YoY Change	-19.4%	-29.5%	-21.84%
% of Gross Profit	4.22%	4.69%	4.4%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$55.85M	$45.59M	$201.3M
YoY Change	22.51%	-3.18%	17.01%
% of Gross Profit	16.6%	12.14%	13.55%
Operating Expenses	$14.21M	$17.63M	$65.35M
YoY Change	-19.4%	-91.37%	-92.63%
Operating Profit	$322.3M	$358.0M	$1.420B
YoY Change	-9.97%	196.1%	229.02%
Interest Expense	$16.22M	$20.44M	$83.85M
YoY Change	-20.61%	43.22%	221.28%
% of Operating Profit	5.03%	5.71%	5.9%
Other Income/Expense, Net
YoY Change
Pretax Income	$22.18M	$46.34M	$187.6M
YoY Change	-52.12%	16.42%	10.49%
Income Tax	$4.782M	$301.0K	$8.828M
% Of Pretax Income	21.56%	0.65%	4.71%
Net Earnings	$13.95M	$39.67M	$153.0M
YoY Change	-64.85%	-236.74%	126.2%
Net Earnings / Revenue	4.07%	10.38%	9.99%
Basic Earnings Per Share	$0.54	$1.43	$5.48
Diluted Earnings Per Share	$0.54	$1.41	$5.38
COMMON SHARES
Basic Shares Outstanding	25.90M shares	27.78M shares	27.93M
Diluted Shares Outstanding			28.42M

Balance Sheet

Concept	2019 Q4	2018 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$80.30M	$235.7M	$235.7M
YoY Change	-65.93%	53.05%	53.05%
Cash & Equivalents	$80.29M	$235.7M	$235.7M
Short-Term Investments
Other Short-Term Assets	$30.90M	$60.70M	$60.70M
YoY Change	-49.09%	156.12%	156.12%
Inventory	$54.13M	$48.65M	$48.60M
Prepaid Expenses
Receivables	$131.7M	$87.59M	$87.60M
Other Receivables	$40.98M	$41.36M	$41.30M
Total Short-Term Assets	$338.0M	$474.0M	$474.0M
YoY Change	-28.68%	18.71%	18.74%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.092B	$2.107B	$2.107B
YoY Change	-0.68%	-0.74%	-0.74%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$263.6M	$180.2M	$180.2M
YoY Change	46.25%	-2.87%	-2.91%
Total Long-Term Assets	$2.356B	$2.287B	$2.287B
YoY Change	3.02%	-0.91%	-0.92%
TOTAL ASSETS
Total Short-Term Assets	$338.0M	$474.0M	$474.0M
Total Long-Term Assets	$2.356B	$2.287B	$2.287B
Total Assets	$2.694B	$2.761B	$2.761B
YoY Change	-2.42%	1.98%	1.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$106.2M	$130.9M	$130.9M
YoY Change	-18.87%	20.01%	19.98%
Accrued Expenses	$235.8M	$226.4M	$226.3M
YoY Change	4.12%	-22.09%	-20.26%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$32.05M	$118.0M	$134.8M
YoY Change	-72.83%	510.59%	499.11%
Total Short-Term Liabilities	$392.3M	$492.2M	$492.2M
YoY Change	-20.3%	16.57%	16.58%
LONG-TERM LIABILITIES
Long-Term Debt	$653.8M	$708.5M	$734.2M
YoY Change	-7.72%	-17.29%	-15.15%
Other Long-Term Liabilities	$14.92M	$16.57M	$982.7M
YoY Change	-9.96%	-31.08%	-8.67%
Total Long-Term Liabilities	$668.7M	$725.1M	$1.717B
YoY Change	-7.78%	-17.67%	-11.56%
TOTAL LIABILITIES
Total Short-Term Liabilities	$392.3M	$492.2M	$492.2M
Total Long-Term Liabilities	$668.7M	$725.1M	$1.717B
Total Liabilities	$2.121B	$2.209B	$2.351B
YoY Change	-3.97%	-6.53%	-6.07%
SHAREHOLDERS EQUITY
Retained Earnings	$259.9M	$182.1M
YoY Change	42.69%	-516.69%
Common Stock	$259.0K	$274.0K
YoY Change	-5.47%	-2.14%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$435.2M	$409.9M	$409.9M
YoY Change
Total Liabilities & Shareholders Equity	$2.694B	$2.761B	$2.761B
YoY Change	-2.42%	1.98%	1.98%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018
OPERATING ACTIVITIES
Net Income	$13.95M	$39.67M	$153.0M
YoY Change	-64.85%	-236.74%	126.2%
Depreciation, Depletion And Amortization	$55.85M	$45.59M	$201.3M
YoY Change	22.51%	-3.18%	17.01%
Cash From Operating Activities	$21.40M	$83.20M	$413.5M
YoY Change	-74.28%	8.9%	66.67%
INVESTING ACTIVITIES
Capital Expenditures	-$38.20M	-$48.80M	$145.7M
YoY Change	-21.72%	60.53%	79.02%
Acquisitions
YoY Change
Other Investing Activities	-$4.800M	-$9.300M	$10.00M
YoY Change	-48.39%	-238.81%
Cash From Investing Activities	-$43.00M	-$58.10M	-$153.6M
YoY Change	-25.99%	145.15%	170.36%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$25.84M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-32.90M	-36.50M	-$148.9M
YoY Change	-9.86%	-137.4%	194.25%
NET CHANGE
Cash From Operating Activities	21.40M	83.20M	$413.5M
Cash From Investing Activities	-43.00M	-58.10M	-$153.6M
Cash From Financing Activities	-32.90M	-36.50M	-$148.9M
Net Change In Cash	-54.50M	-11.40M	$111.0M
YoY Change	378.07%	-107.58%	-21.12%
FREE CASH FLOW
Cash From Operating Activities	$21.40M	$83.20M	$413.5M
Capital Expenditures	-$38.20M	-$48.80M	$145.7M
Free Cash Flow	$59.60M	$132.0M	$267.8M
YoY Change	-54.85%	23.6%	60.64%

Facts In Submission

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CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2092165000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	68821000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	103505000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53436000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	72632000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	59106000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	87471000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	181363000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	263608000	USD
CY2020Q4	us-gaap	Assets Assets	2523366000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	243395000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	235769000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	368470000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	392264000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	566858000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	653802000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	36203000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	9036000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	603061000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	662838000	USD
CY2020Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	387637000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	432496000	USD
CY2020Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Noncurrent EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent	229720000	USD
CY2019Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Noncurrent EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent	202142000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	228182000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	137196000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	553519000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	572395000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2523366000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2693802000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	343641000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	178785000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-66341000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	245126000	USD
CY2018	ceix	Stockholders Equity Separation Related Adjustments StockholdersEquitySeparationRelatedAdjustments	7216000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	25839000	USD
CY2018	ceix	Stockholders Equity Reclassification Adjustment Change In Tax Law StockholdersEquityReclassificationAdjustmentChangeInTaxLaw	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10235000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	250211000	USD
CY2020Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	64390000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	61194000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	35359000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	49930000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	35655000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	55413000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17373000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	14919000	USD
CY2020Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	998316000	USD
CY2019Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	1066305000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1969847000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	2121407000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	340000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	259000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	642887000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	523762000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	246850000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	259903000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-336558000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-348725000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	553519000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	435199000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	0	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3424000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	22265000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	551611000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	25132000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-117000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	68309000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	32733000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12760000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4963000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	22220000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	572395000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	129331000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	244566000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	413525000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	86004000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	169739000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	145749000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	9899000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-14230000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2004000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-988000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11579000	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	863000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5575000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	553519000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	178785000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	201264000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	11579000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	12760000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	10235000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	15295000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1995000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	565000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7447000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6416000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8858000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3922000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11685000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17419000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-16482000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1251000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-0	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-0	USD
CY2020	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-11130000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	38960000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-39157000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2069000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5485000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4774000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-7574000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-497000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	7307000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	21058000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-17302000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-15583000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-30759000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-21714000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	37488000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-2915000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-7884000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-38659000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-25433000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-24062000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-23528000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-29443000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-184642000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	110956000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80293000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	264935000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2201000	USD
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2103000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	229000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5003000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	10000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-76334000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-172541000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-153646000	USD
CY2020	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	19314000	USD
CY2019	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	0	USD
CY2018	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	0	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	28295000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	18549000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	15484000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5575000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	22220000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	22265000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	863000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4963000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3424000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32733000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	25839000	USD
CY2020	ceix	Spin Distribution SpinDistribution	-0	USD
CY2019	ceix	Spin Distribution SpinDistribution	-0	USD
CY2018	ceix	Spin Distribution SpinDistribution	18234000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9002000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	12492000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2166000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-82440000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-256667000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-148923000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	153979000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50850000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80293000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	264935000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;"><b><i>Use of Estimates</i></b></p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as various disclosures. Actual results could differ from those estimates. The most significant estimates included in the preparation of the consolidated financial statements are related to other postretirement benefits, coal workers' pneumoconiosis, workers' compensation, salary retirement benefits, stock-based compensation, asset retirement obligations, deferred income tax assets and liabilities, contingencies and the values of coal properties.</p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;"> </p>
CY2020	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1911000	USD
CY2019	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	6686000	USD
CY2018	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	6033000	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1511420
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	195954
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6983
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	178785000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3459000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17557000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	25809000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-9755000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	76001000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	152976000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26066971
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26938339
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	27928245
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132769
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	491517
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26066971
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27071108
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28419762
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.37
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.82
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.48
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.37
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.81
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	25932618
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	27437844
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	27973281
CY2020	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	7967690
CY2019	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0
CY2018	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-0
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1717497
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	708245
CY2020	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	131066
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	212271
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	172808
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34031374
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	25932618
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	27437844
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;"><b><i>Reclassifications</i></b></p> <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p> <p style="font-family: "Times New Roman"; font-size: 10pt; text-align: justify; margin: 0pt; text-indent: 18pt;">During the year ended <em style="font: inherit;"> December 31, 2020, </em>the Company added the CONSOL Marine Terminal to its reportable segments disclosed in Note <em style="font: inherit;">23</em> - Segment Information. As a result, certain reclassifications of <em style="font: inherit;">2019</em> and <em style="font: inherit;">2018</em> segment information have been made to conform to the <em style="font: inherit;">2020</em> presentation. During the year ended <em style="font: inherit;"> December 31, 2019, </em>certain <em style="font: inherit;">2018</em> amounts were reclassified to conform with the report classifications of <em style="font: inherit;">2019,</em> including the reclassification of amortization of debt issuance costs and loss on debt extinguishment within the Operating Activities section of the Consolidated Statements of Cash Flows. These reclassifications had <em style="font: inherit;">no</em> effect on previously reported total assets, net income, stockholders' equity or cash flow from operating activities.</p> <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p>
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1472790000	USD
CY2020	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	44703000	USD
CY2019	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	9959000	USD
CY2018	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	350000	USD
CY2020	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	39437000	USD
CY2019	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	0	USD
CY2018	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	0	USD
CY2020	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	17847000	USD
CY2019	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	0	USD
CY2018	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	0	USD
CY2020	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	12032000	USD
CY2019	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	22208000	USD
CY2018	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	24722000	USD
CY2020	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	8624000	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2018	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2020	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	1314000	USD
CY2019	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	2517000	USD
CY2018	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	3804000	USD
CY2020	us-gaap	Interest Income Other InterestIncomeOther	1230000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	2937000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	2146000	USD
CY2020	ceix	Property Easements And Option Income PropertyEasementsAndOptionIncome	907000	USD
CY2019	ceix	Property Easements And Option Income PropertyEasementsAndOptionIncome	1631000	USD
CY2018	ceix	Property Easements And Option Income PropertyEasementsAndOptionIncome	5644000	USD
CY2020	ceix	Purchased Coal Sales PurchasedCoalSales	0	USD
CY2019	ceix	Purchased Coal Sales PurchasedCoalSales	12385000	USD
CY2018	ceix	Purchased Coal Sales PurchasedCoalSales	19152000	USD
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	792000	USD
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1712000	USD
CY2018	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	2842000	USD
CY2020	us-gaap	Other Income OtherIncome	126886000	USD
CY2019	us-gaap	Other Income OtherIncome	53349000	USD
CY2018	us-gaap	Other Income OtherIncome	58660000	USD
CY2019Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	50000000	USD
CY2018Q3	ceix	Stock And Debt Repurchase Program Authorized Amount StockAndDebtRepurchaseProgramAuthorizedAmount	100000000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1717497
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	708245
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5933000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15905000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20634000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-2294000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4717000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3240000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	514000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1336000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1436000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-7713000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21958000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25310000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	10936000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-9386000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-7509000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	749000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8033000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8973000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11685000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17419000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-16482000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3972000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4539000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8828000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1941000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20600000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	39399000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1109000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.120	pure
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3125000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032	pure
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3240000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.017	pure
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	406000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.044	pure
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1336000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.014	pure
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	28000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0	pure
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0	pure
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-13141000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.134	pure
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-20873000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.111	pure
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0	pure
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0	pure
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	2777000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.015	pure
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1310000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.142	pure
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1799000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.018	pure
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	935000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.005	pure
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1479000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.160	pure
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1400000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.014	pure
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1379000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.007	pure
CY2020	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	1150000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.124	pure
CY2019	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	-2536000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.026	pure
CY2018	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	-980000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.005	pure
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	-726000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.079	pure
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3687000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.038	pure
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	5420000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.029	pure
CY2020	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	1797000	USD
CY2020	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	-0.194	pure
CY2019	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	-4565000	USD
CY2019	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	-0.046	pure
CY2018	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	-9448000	USD
CY2018	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	-0.050	pure
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	154000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.016	pure
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	208000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002	pure
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	549000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003	pure
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3972000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.429	pure
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4539000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.046	pure
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8828000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.048	pure
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	173849000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	298663000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	319839000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	172026000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	101673000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	110504000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	60284000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	52521000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	56779000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	60260000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	17493000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	16750000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	17271000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	17110000	USD
CY2020Q4	ceix	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	11377000	USD
CY2019Q4	ceix	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	14757000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9446000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	14761000	USD
CY2020Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	6918000	USD
CY2019Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	7042000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6134000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5158000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	3841000	USD
CY2020Q4	ceix	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Longterm Disability DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsLongtermDisability	2757000	USD
CY2019Q4	ceix	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Longterm Disability DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsLongtermDisability	3031000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	2077000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	16806000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	1400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4175000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2456000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	301542000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	321239000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2879000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1400000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	35570000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	17028000	USD
CY2020Q4	ceix	Deferred Tax Liabilities Operating Lease Rightofuse Asset DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset	11338000	USD
CY2019Q4	ceix	Deferred Tax Liabilities Operating Lease Rightofuse Asset DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset	14757000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	10908000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	10700000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	229842000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	216334000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	68821000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	103505000	USD
CY2020Q4	ceix	Operating Loss Carryforwards Not Subject To Expiration OperatingLossCarryforwardsNotSubjectToExpiration	25180000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2879000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2811000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-866000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1661000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	271952000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	267001000	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	17905000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	20116000	USD
CY2020	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	13529000	USD
CY2019	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	13030000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	9248000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	2135000	USD
CY2020	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-18311000	USD
CY2019	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	0	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	248769000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	271952000	USD
CY2020	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-18311000	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	7163000	USD
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	2484000	USD
CY2020Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	49037000	USD
CY2019Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	51647000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	56200000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	54131000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5143696000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5008180000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3094634000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2916015000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2049062000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2092165000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	112334000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	52729000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	56761000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	31373000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	24066000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	15691000	USD
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	13148000	USD
CY2020Q4	us-gaap	Debt Instrument Fee Amount DebtInstrumentFeeAmount	1156000	USD
CY2019Q4	us-gaap	Debt Instrument Fee Amount DebtInstrumentFeeAmount	1441000	USD
CY2018Q4	us-gaap	Debt Instrument Fee Amount DebtInstrumentFeeAmount	2593000	USD
CY2020Q4	ceix	Accrued Subsidence Liability Current AccruedSubsidenceLiabilityCurrent	89554000	USD
CY2019Q4	ceix	Accrued Subsidence Liability Current AccruedSubsidenceLiabilityCurrent	90645000	USD
CY2020Q4	ceix	Accrued Payroll And Employee Benefits Current AccruedPayrollAndEmployeeBenefitsCurrent	21179000	USD
CY2019Q4	ceix	Accrued Payroll And Employee Benefits Current AccruedPayrollAndEmployeeBenefitsCurrent	21102000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	7126000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	4753000	USD
CY2020Q4	ceix	Accrued Equipment Obligations Current AccruedEquipmentObligationsCurrent	6698000	USD
CY2019Q4	ceix	Accrued Equipment Obligations Current AccruedEquipmentObligationsCurrent	0	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6236000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6281000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	23845000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	16281000	USD
CY2020Q4	ceix	Liability Other Postretirement Defined Benefit Plan Current LiabilityOtherPostretirementDefinedBenefitPlanCurrent	26073000	USD
CY2019Q4	ceix	Liability Other Postretirement Defined Benefit Plan Current LiabilityOtherPostretirementDefinedBenefitPlanCurrent	31833000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	20587000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	21741000	USD
CY2020Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Current EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsCurrent	12203000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	768000	USD
CY2019Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Current EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsCurrent	12331000	USD
CY2020Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	9653000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	11323000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	243395000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	235769000	USD
CY2020Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9921000	USD
CY2019Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	10323000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	600589000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	685855000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	33731000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	32053000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	566858000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	653802000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	20115000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	18219000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	33731000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	36348000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	12526000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	257891000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	270184000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	611448000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2020Q4	us-gaap	Debt Instrument Collateral Amount DebtInstrumentCollateralAmount	2813000	USD
CY2019Q4	us-gaap	Debt Instrument Collateral Amount DebtInstrumentCollateralAmount	9289000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2834000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	154000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2004000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	674000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-117000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	37000	USD
CY2020Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	1587000	USD
CY2020	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	2067000	USD
CY2020	ceix	Operating Lease Cost Fixed OperatingLeaseCostFixed	24359000	USD
CY2019	ceix	Operating Lease Cost Fixed OperatingLeaseCostFixed	25875000	USD
CY2020	ceix	Operating Lease Cost Variable OperatingLeaseCostVariable	3835000	USD
CY2019	ceix	Operating Lease Cost Variable OperatingLeaseCostVariable	11445000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	28194000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	37320000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	24293000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	25675000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53436000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	72632000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	35655000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	55413000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	55896000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	74892000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y7D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0684	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0679	pure
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	24066000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	15691000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2375000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1878000	USD
CY2020	ceix	Finance Lease Cost FinanceLeaseCost	26441000	USD
CY2019	ceix	Finance Lease Cost FinanceLeaseCost	17569000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y8M4D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y8M8D
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0579	pure
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0520	pure
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	22557000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	23358000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	18074000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	13450000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	16623000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6395000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	3595000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6115000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	320000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4619000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	11339000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	61169000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	65276000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	4851000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	9380000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	56318000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	55896000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	778868000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	720098000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	778618000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	719985000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	740978000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	668481000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	740978000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	668481000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	10580000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	10392000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	10212000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	10151000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	10015000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	50445000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.06	pure
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	10445000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8114000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	10737000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	20655000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2600000
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2871000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2856000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1911000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	6537000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M17D
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	42200000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4424000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1301000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	45979000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	62997000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	73574000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	92926000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	1476000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	40139000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	12834000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	122715000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	133788000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4426000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2100000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	118289000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	131688000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1472790000	USD
CY2020Q4	ceix	Guarantees Maximum Exposure GuaranteesMaximumExposure	8000000	USD
CY2019Q4	ceix	Guarantees Maximum Exposure GuaranteesMaximumExposure	20000000	USD
CY2020Q4	us-gaap	Guarantees Fair Value Disclosure GuaranteesFairValueDisclosure	168000	USD
CY2019Q4	us-gaap	Guarantees Fair Value Disclosure GuaranteesFairValueDisclosure	482000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	pure
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2020	ceix	Adjusted Ebitda AdjustedEBITDA	261523000	USD
CY2020Q4	us-gaap	Assets Assets	2523366000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	86004000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2019	ceix	Adjusted Ebitda AdjustedEBITDA	405936000	USD
CY2019Q4	us-gaap	Assets Assets	2693802000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	169739000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1472790000	USD
CY2018	ceix	Adjusted Ebitda AdjustedEBITDA	484736000	USD
CY2018Q4	us-gaap	Assets Assets	2760727000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	201264000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	145749000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2018	ceix	Separation Number Of Independent Businesses SeparationNumberOfIndependentBusinesses	2	pure
CY2020	us-gaap	Other Income OtherIncome	126886000	USD
CY2019	us-gaap	Other Income OtherIncome	53349000	USD
CY2018	us-gaap	Other Income OtherIncome	58660000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	15295000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1995000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	565000	USD
CY2020	us-gaap	Revenues Revenues	1021643000	USD
CY2019	us-gaap	Revenues Revenues	1430903000	USD
CY2018	us-gaap	Revenues Revenues	1532015000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-9242000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98097000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	187613000	USD
CY2020	us-gaap	Interest Expense InterestExpense	61186000	USD
CY2019	us-gaap	Interest Expense InterestExpense	66464000	USD
CY2018	us-gaap	Interest Expense InterestExpense	83848000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3922000	USD
CY2020	us-gaap	Interest Income Other InterestIncomeOther	1230000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	2937000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	2146000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	201264000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9822000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	11579000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	12760000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	10235000	USD
CY2020	ceix	Adjusted Ebitda AdjustedEBITDA	261523000	USD
CY2019	ceix	Adjusted Ebitda AdjustedEBITDA	405936000	USD
CY2018	ceix	Adjusted Ebitda AdjustedEBITDA	484736000	USD
CY2020Q4	ceix	Cash Restricted Cash And Cash Equivalents Including Shortterm Investments CashRestrictedCashAndCashEquivalentsIncludingShorttermInvestments	44013000	USD
CY2019Q4	ceix	Cash Restricted Cash And Cash Equivalents Including Shortterm Investments CashRestrictedCashAndCashEquivalentsIncludingShorttermInvestments	93236000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	68821000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	103505000	USD
CY2020Q4	us-gaap	Assets Assets	2523366000	USD
CY2019Q4	us-gaap	Assets Assets	2693802000	USD
CY2018	ceix	Payment Of Separation And Distribution Costs PaymentOfSeparationAndDistributionCosts	18234000	USD
CY2020	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	7967690
CY2020	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	13424000	USD
CY2019	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	11528000	USD
CY2018	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	11218000	USD

Files In Submission

Name	View Source	Status
0001437749-21-002802-index-headers.html	Edgar Link	pending
0001437749-21-002802-index.html	Edgar Link	pending
0001437749-21-002802.txt	Edgar Link	pending
0001437749-21-002802-xbrl.zip	Edgar Link	pending
ceix-20201231.xsd	Edgar Link	pending
ceix-20201231_cal.xml	Edgar Link	unprocessable
ceix-20201231_def.xml	Edgar Link	unprocessable
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ceix20201223b_10k.htm	Edgar Link	pending
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$CEIX
CONSOL Energy Inc. Stock $ceix

2019 Q4 Form 10-K Financial Statement

#000143774921002802 Filed on February 12, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CEIX CONSOL Energy Inc. Stock $ceix

2019 Q4 Form 10-K Financial Statement

#000143774921002802 Filed on February 12, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CEIX
CONSOL Energy Inc. Stock $ceix