$HCC
WARRIOR MET COAL, INC. Stock $hcc

$hcc Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000169130319000007 Filed on February 21, 2019

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$360.4M	$273.3M	$322.6M
YoY Change	50.27%	-12.39%	-11.23%
Cost Of Revenue	$168.6M	$167.2M	$178.5M
YoY Change	18.65%	-11.8%	11.48%
Gross Profit	$191.8M	$99.41M	$136.7M
YoY Change	96.35%	-13.86%	-30.06%
Gross Profit Margin	53.22%	36.37%	42.37%
Selling, General & Admin	$7.600M	$7.357M	$13.47M
YoY Change	-43.28%	-20.4%	55.48%
% of Gross Profit	3.96%	7.4%	9.85%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$25.40M	$26.07M	$21.13M
YoY Change	42.7%	11.45%	7.52%
% of Gross Profit	13.24%	26.23%	15.46%
Operating Expenses	$33.00M	$7.357M	$13.47M
YoY Change	5.77%	-20.4%	55.48%
Operating Profit	$157.2M	$62.72M	$101.1M
YoY Change	136.41%	-24.22%	-38.08%
Interest Expense	-$8.800M	-$10.13M	-$9.784M
YoY Change	72.55%	1482.5%	1423.99%
% of Operating Profit	-5.6%	-16.15%	-9.68%
Other Income/Expense, Net
YoY Change
Pretax Income	$148.4M	$52.59M	$91.31M
YoY Change	141.69%	-35.97%	-43.85%
Income Tax	-$223.0M	$0.00	$0.00
% Of Pretax Income	-150.27%	0.0%	0.0%
Net Earnings	$374.2M	$52.59M	$91.31M
YoY Change	285.14%	-56.07%	-29.69%
Net Earnings / Revenue	103.84%	19.24%	28.31%
Basic Earnings Per Share	$7.13	$1.00	$1.72
Diluted Earnings Per Share	$7.11	$1.00	$1.72
COMMON SHARES
Basic Shares Outstanding	52.76M shares	52.71M shares	53.05M shares
Diluted Shares Outstanding		52.71M shares	53.08M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$223.1M	$147.7M	$72.60M
YoY Change	320.94%	-41.3%	-58.11%
Cash & Equivalents	$205.6M	$130.2M	$55.09M
Short-Term Investments	$17.50M	$17.50M	$17.50M
Other Short-Term Assets	$28.00M	$28.00M	$20.80M
YoY Change	-4.76%	47.37%	24.55%
Inventory	$56.72M	$66.77M	$59.45M
Prepaid Expenses	$29.37M	$28.02M	$20.75M
Receivables	$138.4M	$113.8M	$129.9M
Other Receivables	$1.434M	$11.35M	$10.27M
Total Short-Term Assets	$469.2M	$367.6M	$293.0M
YoY Change	74.5%	-18.83%	-19.17%
LONG-TERM ASSETS
Property, Plant & Equipment	$540.3M	$549.6M	$551.2M
YoY Change	0.67%	6.9%	11.33%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$21.04M	$20.84M	$21.32M
YoY Change	14.08%	-86.44%	-86.05%
Total Long-Term Assets	$925.9M	$732.6M	$736.8M
YoY Change	27.8%	9.7%	13.72%
TOTAL ASSETS
Total Short-Term Assets	$469.2M	$367.6M	$293.0M
Total Long-Term Assets	$925.9M	$732.6M	$736.8M
Total Assets	$1.395B	$1.100B	$1.030B
YoY Change	40.44%	-1.83%	1.92%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$33.59M	$37.08M	$40.12M
YoY Change	19.63%	123.36%	190.75%
Accrued Expenses	$82.34M	$87.12M	$66.48M
YoY Change	23.44%	60.74%	7.56%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$760.0K	$1.512M	$2.257M
YoY Change	-74.37%	-47.86%	-22.17%
Total Short-Term Liabilities	$124.4M	$134.8M	$115.7M
YoY Change	14.98%	72.32%	39.22%
LONG-TERM LIABILITIES
Long-Term Debt	$468.2M	$466.1M	$465.9M
YoY Change	36.53%	30971.93%	20154.78%
Other Long-Term Liabilities	$5.510M	$34.17M	$35.08M
YoY Change	115.07%	-72.99%	-72.14%
Total Long-Term Liabilities	$473.7M	$500.2M	$500.9M
YoY Change	37.11%	290.82%	290.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$124.4M	$134.8M	$115.7M
Total Long-Term Liabilities	$473.7M	$500.2M	$500.9M
Total Liabilities	$682.4M	$734.4M	$714.9M
YoY Change	17.6%	256.17%	235.33%
SHAREHOLDERS EQUITY
Retained Earnings	$510.3M	$138.2M	$88.27M
YoY Change	518.55%
Common Stock	$533.0K	$534.0K	$534.0K
YoY Change	-0.19%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$38.03M	$12.10M	$12.10M
YoY Change
Treasury Stock Shares	1.633B shares
Shareholders Equity	$712.6M	$365.7M	$314.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.395B	$1.100B	$1.030B
YoY Change	40.44%	-1.83%	1.92%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$374.2M	$52.59M	$91.31M
YoY Change	285.14%	-56.07%	-29.69%
Depreciation, Depletion And Amortization	$25.40M	$26.07M	$21.13M
YoY Change	42.7%	11.45%	7.52%
Cash From Operating Activities	$130.8M	$102.3M	$132.6M
YoY Change	43.11%	-11.89%	-17.84%
INVESTING ACTIVITIES
Capital Expenditures	-$31.00M	$24.16M	$32.88M
YoY Change	3.68%	-29.78%	94.71%
Acquisitions
YoY Change
Other Investing Activities	$2.500M	$400.0K
YoY Change
Cash From Investing Activities	-$28.40M	-$23.80M	-$32.90M
YoY Change	-5.02%	-30.81%	94.67%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-26.90M	-3.500M	-366.6M
YoY Change	-89.68%	2.94%	10682.35%
NET CHANGE
Cash From Operating Activities	130.8M	102.3M	132.6M
Cash From Investing Activities	-28.40M	-23.80M	-32.90M
Cash From Financing Activities	-26.90M	-3.500M	-366.6M
Net Change In Cash	75.50M	75.00M	-266.9M
YoY Change	-137.9%	-4.21%	-289.16%
FREE CASH FLOW
Cash From Operating Activities	$130.8M	$102.3M	$132.6M
Capital Expenditures	-$31.00M	$24.16M	$32.88M
Free Cash Flow	$161.8M	$78.14M	$99.72M
YoY Change	33.39%	-4.35%	-30.99%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001691303
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	51555337	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2016Q2	hcc	Securities Held As Collateral Replacement Option Period SecuritiesHeldAsCollateralReplacementOptionPeriod	P6M
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	28076000	USD
CY2017Q4	hcc	Inventory Raw Materials Purchased Parts Suppliesand Other Netof Reserve InventoryRawMaterialsPurchasedPartsSuppliesandOtherNetofReserve	21872000	USD
CY2018Q4	hcc	Inventory Raw Materials Purchased Parts Suppliesand Other Netof Reserve InventoryRawMaterialsPurchasedPartsSuppliesandOtherNetofReserve	23865000	USD
CY2017	hcc	Net Income Lossbefore Interest Taxes Depreciationand Amortization NetIncomeLossbeforeInterestTaxesDepreciationandAmortization	532115000	USD
CY2018	hcc	Net Income Lossbefore Interest Taxes Depreciationand Amortization NetIncomeLossbeforeInterestTaxesDepreciationandAmortization	626038000	USD
	hcc	Paymentsfor Transfersto Parent PaymentsforTransferstoParent	0	USD
CY2017	hcc	Paymentsfor Transfersto Parent PaymentsforTransferstoParent	0	USD
CY2018	hcc	Paymentsfor Transfersto Parent PaymentsforTransferstoParent	0	USD
CY2017Q4	hcc	Prepaid Deposits Current PrepaidDepositsCurrent	1043000	USD
CY2018Q4	hcc	Prepaid Deposits Current PrepaidDepositsCurrent	692000	USD
	hcc	Proceeds From Escrow Agreement ProceedsFromEscrowAgreement	9364000	USD
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	1200000000	USD
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2017	hcc	Proceeds From Escrow Agreement ProceedsFromEscrowAgreement	0	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	WARRIOR MET COAL, INC.
CY2018	hcc	Proceeds From Escrow Agreement ProceedsFromEscrowAgreement	0	USD
CY2017	hcc	Debtor Reorganization Items Employee Related Charges Impairment Loss And Net Gain Loss On Rejection Of Leases And Other Executory Contracts DebtorReorganizationItemsEmployeeRelatedChargesImpairmentLossAndNetGainLossOnRejectionOfLeasesAndOtherExecutoryContracts	0	USD
CY2018	hcc	Debtor Reorganization Items Employee Related Charges Impairment Loss And Net Gain Loss On Rejection Of Leases And Other Executory Contracts DebtorReorganizationItemsEmployeeRelatedChargesImpairmentLossAndNetGainLossOnRejectionOfLeasesAndOtherExecutoryContracts	0	USD
CY2017Q4	hcc	Deferred Moving Costs Current DeferredMovingCostsCurrent	19600000	USD
CY2018Q4	hcc	Deferred Moving Costs Current DeferredMovingCostsCurrent	20053000	USD
CY2017	hcc	Effective Income Tax Rate Reconciliation Nondeductible Transaction Expense Amount EffectiveIncomeTaxRateReconciliationNondeductibleTransactionExpenseAmount	4506000	USD
CY2018	hcc	Effective Income Tax Rate Reconciliation Nondeductible Transaction Expense Amount EffectiveIncomeTaxRateReconciliationNondeductibleTransactionExpenseAmount	566000	USD
CY2016Q2	hcc	Held To Maturity Securities Held As Collateral HeldToMaturitySecuritiesHeldAsCollateral	17500000	USD
	hcc	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	0	USD
CY2017	hcc	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	39255000	USD
CY2018	hcc	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	-17945000	USD
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017Q4	hcc	Accrued Freight Current AccruedFreightCurrent	5051000	USD
CY2018Q4	hcc	Accrued Freight Current AccruedFreightCurrent	4053000	USD
CY2017Q4	hcc	Accrued Operating Expenses Current AccruedOperatingExpensesCurrent	17203000	USD
CY2018Q4	hcc	Accrued Operating Expenses Current AccruedOperatingExpensesCurrent	20383000	USD
CY2017	hcc	Adjustments To Additional Paid In Capital Purchase Accounting Adjustments AdjustmentsToAdditionalPaidInCapitalPurchaseAccountingAdjustments	3525000	USD
CY2017	hcc	Adjustments To Additional Paid In Capital Sharebased Compensation Equity Award Modification AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationEquityAwardModification	1255000	USD
CY2018	hcc	Asset Retirement Obligation Revision Of Estimate Adjustment To Earnings AssetRetirementObligationRevisionOfEstimateAdjustmentToEarnings	-24600000	USD
	hcc	Asset Retirement Obligation Revision Of Estimate Adjustment To Earnings Net Of Accretion Expense AssetRetirementObligationRevisionOfEstimateAdjustmentToEarningsNetOfAccretionExpense	2817000	USD
CY2017	hcc	Asset Retirement Obligation Revision Of Estimate Adjustment To Earnings Net Of Accretion Expense AssetRetirementObligationRevisionOfEstimateAdjustmentToEarningsNetOfAccretionExpense	1834000	USD
CY2018	hcc	Asset Retirement Obligation Revision Of Estimate Adjustment To Earnings Net Of Accretion Expense AssetRetirementObligationRevisionOfEstimateAdjustmentToEarningsNetOfAccretionExpense	-19942000	USD
CY2018	hcc	Asset Retirement Obligation Revision Of Estimate Adjustment To Earnings Per Share AssetRetirementObligationRevisionOfEstimateAdjustmentToEarningsPerShare	0.47
CY2017Q4	hcc	Assets Held In Trust Self Insurance Reserve Noncurrent AssetsHeldInTrustSelfInsuranceReserveNoncurrent	4000000	USD
CY2018Q4	hcc	Assets Held In Trust Self Insurance Reserve Noncurrent AssetsHeldInTrustSelfInsuranceReserveNoncurrent	3600000	USD
CY2018Q4	hcc	Assets Held In Trust Special Distribution Noncurrent AssetsHeldInTrustSpecialDistributionNoncurrent	5400000	USD
	hcc	Debtor Reorganization Items Employee Related Charges Impairment Loss And Net Gain Loss On Rejection Of Leases And Other Executory Contracts DebtorReorganizationItemsEmployeeRelatedChargesImpairmentLossAndNetGainLossOnRejectionOfLeasesAndOtherExecutoryContracts	0	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	33588000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	117746000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	138399000	USD
CY2017Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1553000	USD
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1642000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	66704000	USD
CY2017Q4	us-gaap	Assets Assets	993315000	USD
CY2018Q4	us-gaap	Assets Assets	1395040000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	268869000	USD
CY2017Q2	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3800000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	12873000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	469169000	USD
CY2017Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9000000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	82342000	USD
CY2017Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	9185000	USD
CY2018Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	8617000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	111749000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	184443000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	329993000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	239827000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-4938000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	509000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4181000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6405000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1244000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1889000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2486000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	99148000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	99668000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	61824000	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1834000	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	4619000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	3572000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	2775000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	2800000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	0	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	656000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	399000	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-658000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-42064000	USD
CY2017Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	96096000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	59049000	USD
CY2018Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3300000	USD
CY2018Q2	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1000000	USD
CY2018Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3300000	USD
CY2018Q4	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1500000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9068000	USD
CY2016Q2	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	7355000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	6822000	USD
CY2017Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	9900000	USD
CY2018Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	7900000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	4482000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	4310000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	0	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	0	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	0	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	172000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	28000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	4454000	USD
CY2017Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	1600000	USD
CY2018Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	2100000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	35470000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	205577000	USD
CY2016Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	0	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	152656000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	36264000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	206405000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	152656000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-116392000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	170141000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	14.92
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	14.92
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	6.73
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	6.73
CY2017Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.56
CY2017Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2017Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2017Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	53284470	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	53256098	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	53284470	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51622898	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	534000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	533000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	592530000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	716645000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	745691000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	869720000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-36906000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-2776000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-36906000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2776000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	7812000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	6769000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1712000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-176141000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	222780000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	544000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1686000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-223038000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	116888000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	104143000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	258000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	26000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-46897000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	429123000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	326923000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1083000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	119000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	116630000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	326923000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	395526000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	298180000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	197000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2767000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	561000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	3611000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	23765000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	15526000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	7991000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	6720000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	767290000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	312493000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	258000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-222780000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1757000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1888000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	9416000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	9894000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	105715000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	92361000	USD
	us-gaap	Depletion Depletion	4500000	USD
CY2017	us-gaap	Depletion Depletion	9400000	USD
CY2018	us-gaap	Depletion Depletion	9600000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	47413000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75413000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	97209000	USD
CY2017Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	1664000	USD
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2017Q1	us-gaap	Distribution Made To Limited Liability Company Llc Member Cash Distributions Paid DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid	190000000	USD
CY2017Q1	us-gaap	Dividends Cash DividendsCash	190000000	USD
CY2017Q2	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2017Q3	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2017Q4	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2018Q1	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2018Q2	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2018Q3	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2018Q4	us-gaap	Dividends Cash DividendsCash	2700000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	796902000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	360635000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.94
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.62
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.36
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.72
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.13
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	13.19
CY2017Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.06
CY2017Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.46
CY2017Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	2.27
CY2017Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	1.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.94
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.62
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.36
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.72
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.11
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	13.17
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	24832000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	37221000	USD
CY2017Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	32422000	USD
CY2018Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	32854000	USD
CY2016Q2	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	828321000	USD
CY2017	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2018	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	139641000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	195423000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	115406000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	97670000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	223328000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	136674000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	99412000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	191776000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Current HeldToMaturitySecuritiesCurrent	17501000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Current HeldToMaturitySecuritiesCurrent	17501000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	416454000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	470973000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-38592000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-225814000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-225814000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-129245000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-312493000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-38592000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-2775000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	145759000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	98904000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-25212000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-18227000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-5428000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-6686000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9620000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	14897000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2349000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3000	USD
CY2017Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	9176000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	21607000	USD
CY2017Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	39255000	USD
CY2018Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	21310000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4144000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	14388000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5060000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	54911000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	51850000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	20653000	USD
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	0	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	0	USD
CY2018Q4	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-2800000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	12431000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-9524000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13732000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1812000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	45408000	USD
CY2017	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	15642000	USD
CY2018	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	13835000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	2530000	USD
CY2017	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	8121000	USD
CY2018	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-3872000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11001000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	17366000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1444000	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	6000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	106000	shares
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-6947000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-37314000	USD
	us-gaap	Interest Paid Net InterestPaidNet	231000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	211000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	30237000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	4589000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6333000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	54294000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	56719000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	580292000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	682428000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	993315000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1395040000	USD
CY2016Q2	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	175360000	USD
CY2017	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2018	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	108220000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	124432000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	345913000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	468991000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2965000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	760000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	475000000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	760000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	342948000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	468231000	USD
CY2017Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	14200000	USD
CY2018Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	23800000	USD
CY2017Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	144200000	USD
CY2018Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	144200000	USD
CY2017Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	130004000	USD
CY2018Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	120427000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	192727000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-458279000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-281626000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-30884000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-92625000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-107629000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-9187000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	434512000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	559396000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-49673000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	108308000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	129865000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	119717000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	97156000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	455046000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	178694000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	91312000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	52591000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	374190000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	696787000	USD
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	110853000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	163276000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	82770000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	66502000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	423401000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	187254000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	101096000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	62719000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	157218000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	508287000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4291000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4093000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	7306000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	9301000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	18442000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	21039000	USD
CY2017	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	28422000	USD
CY2018	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	10172000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	6903000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	4967000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2562000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	5510000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	5613000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-1871000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-7771000	USD
CY2017	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	0	USD
CY2018	us-gaap	Other Postretirement Benefit Expense OtherPostretirementBenefitExpense	0	USD
CY2017Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2114000	USD
CY2018Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2517000	USD
CY2017Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	5306000	USD
CY2018Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	1434000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2016Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	38030000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4978000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2562000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3713000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	796902000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	360635000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	24107000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	0	USD
CY2016Q1	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	0	USD
CY2017	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	0	USD
CY2018	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	8937000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11531000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	92625000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	101620000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	17501000	USD
CY2017	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2017	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	0	USD
CY2018	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	0	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	29376000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	27932000	USD
CY2017Q4	us-gaap	Prepaid Insurance PrepaidInsurance	4955000	USD
CY2018Q4	us-gaap	Prepaid Insurance PrepaidInsurance	4670000	USD
CY2017Q4	us-gaap	Prepaid Mineral Royalties Noncurrent PrepaidMineralRoyaltiesNoncurrent	10342000	USD
CY2018Q4	us-gaap	Prepaid Mineral Royalties Noncurrent PrepaidMineralRoyaltiesNoncurrent	10910000	USD
	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	200000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	344750000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	128750000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	12857000	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2016Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4938000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	34000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2928000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	648494000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	724758000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	536745000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	540315000	USD
CY2017	us-gaap	Reorganization Items ReorganizationItems	0	USD
CY2018	us-gaap	Reorganization Items ReorganizationItems	0	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	505000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3060000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2295000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3060000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	794000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	828000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	82496000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	510282000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	297634000	USD
CY2017Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	253964000	USD
CY2017Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	363370000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	311955000	USD
CY2017Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	239803000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1169092000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	421788000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	322555000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	273304000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	360360000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1378007000	USD
CY2017	us-gaap	Royalty Expense RoyaltyExpense	93300000	USD
CY2018	us-gaap	Royalty Expense RoyaltyExpense	101000000	USD
CY2017Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	31900000	USD
CY2018Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	26800000	USD
CY2017Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	1700000	USD
CY2018Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	1600000	USD
CY2017Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	30208000	USD
CY2017Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	30200000	USD
CY2018Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	25200000	USD
CY2018Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	25206000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	36453000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	36626000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	509000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4181000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6405000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2016Q1	us-gaap	Stockholders Equity StockholdersEquity	0	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	752967000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	413023000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	712612000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1633200000	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1633200000	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	38030000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	38030000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52640000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52806000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52918000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52640000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52800000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52812000	shares
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Concentrations of Credit Risk and Major Customers</font></div></div><div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Credit is extended based on an evaluation of the individual customer’s financial condition. In some instances, the Company requires letters of credit, cash collateral or prepayments from its customers on or before shipment to mitigate the risk of loss.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;padding-bottom:10px;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company prepares its financial statements in conformity with GAAP, which requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. Due to the inherent uncertainty involved in making estimates, actual results could differ from those estimates. </font></div></div>

Files In Submission

Name	View Source	Status
0001691303-19-000007-index-headers.html	Edgar Link	pending
0001691303-19-000007-index.html	Edgar Link	pending
0001691303-19-000007.txt	Edgar Link	pending
0001691303-19-000007-xbrl.zip	Edgar Link	pending
a123118form10-k.htm	Edgar Link	pending
exhibit1023-123118.htm	Edgar Link	pending
exhibit1024-123118.htm	Edgar Link	pending
exhibit1025-123118.htm	Edgar Link	pending
exhibit211-123118.htm	Edgar Link	pending
exhibit231-123118.htm	Edgar Link	pending
exhibit232-123118.htm	Edgar Link	pending
exhibit233-123118.htm	Edgar Link	pending
exhibit234-123118.htm	Edgar Link	pending
exhibit311-123118.htm	Edgar Link	pending
exhibit312-123118.htm	Edgar Link	pending
exhibit321-123118.htm	Edgar Link	pending
exhibit95-123118.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
g501786g98z15.jpg	Edgar Link	pending
hcc-20181231.xml	Edgar Link	completed
hcc-20181231.xsd	Edgar Link	pending
hcc-20181231_cal.xml	Edgar Link	unprocessable
hcc-20181231_def.xml	Edgar Link	unprocessable
hcc-20181231_lab.xml	Edgar Link	unprocessable
hcc-20181231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.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
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
stockperformancegrapha01.jpg	Edgar Link	pending
warriormap.jpg	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$HCC
WARRIOR MET COAL, INC. Stock $hcc

2018 Q4 Form 10-K Financial Statement

#000169130319000007 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HCC WARRIOR MET COAL, INC. Stock $hcc

2018 Q4 Form 10-K Financial Statement

#000169130319000007 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HCC
WARRIOR MET COAL, INC. Stock $hcc