$NC
NACCO INDUSTRIES INC Stock $nc

$nc Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000078993319000013 Filed on March 06, 2019

Income Statement

Concept	2018	2017 Q4	2017
Revenue	$135.4M	$26.40M	$104.8M
YoY Change	29.2%	-90.71%	-5.67%
Cost Of Revenue	$105.4M	$21.10M	$87.86M
YoY Change	19.97%	-8.66%	-11.25%
Gross Profit	$29.97M	$5.289M	$16.92M
YoY Change	77.13%	137.17%	40.03%
Gross Profit Margin	22.14%	20.03%	16.15%
Selling, General & Admin	$49.19M	$15.70M	$47.49M
YoY Change	3.58%	-13.26%	-2.81%
% of Gross Profit	164.15%	296.84%	280.7%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$14.68M	$3.200M	$12.77M
YoY Change	15.01%	0.0%	-2.17%
% of Gross Profit	49.0%	60.5%	75.46%
Operating Expenses	$51.34M	$16.10M	$45.47M
YoY Change	12.92%	-13.9%	-34.09%
Operating Profit	$43.62M	$6.506M	$32.81M
YoY Change	32.94%	-1020.23%	-2077.94%
Interest Expense	$1.998M	$16.40M	$3.440M
YoY Change	-41.92%	19.71%	-20.33%
% of Operating Profit	4.58%	252.08%	10.48%
Other Income/Expense, Net	-$1.461M	-$400.0K	-$3.712M
YoY Change	-60.64%	-133.33%	-26.26%
Pretax Income	$45.17M	$5.800M	$31.45M
YoY Change	43.61%	-2033.33%	-8.75%
Income Tax	$7.378M	-$800.0K	$639.0K
% Of Pretax Income	16.33%	-13.79%	2.03%
Net Earnings	$34.79M	$10.17M	$30.34M
YoY Change	14.66%	-57.85%	2.47%
Net Earnings / Revenue	25.7%	38.53%	28.95%
Basic Earnings Per Share	$5.02	$1.48	$4.44
Diluted Earnings Per Share	$5.00	$1.47	$4.41
COMMON SHARES
Basic Shares Outstanding	6.924M shares		6.830M shares
Diluted Shares Outstanding	6.960M shares		6.873M shares

Balance Sheet

Concept	2018	2017 Q4	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments	$85.30M	$101.6M	$101.6M
YoY Change	-16.04%	46.61%	46.61%
Cash & Equivalents	$85.30M	$101.6M	$101.6M
Short-Term Investments
Other Short-Term Assets	$18.90M	$10.80M	$10.80M
YoY Change	75.0%	-95.89%	-95.89%
Inventory	$31.20M	$30.02M	$30.00M
Prepaid Expenses
Receivables	$28.80M	$34.50M	$34.50M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$164.2M	$177.0M	$177.0M
YoY Change	-7.23%	-53.64%	-53.63%
LONG-TERM ASSETS
Property, Plant & Equipment	$124.6M	$120.1M	$120.1M
YoY Change	3.75%	4.31%	4.34%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$20.10M	$16.34M	$16.30M
YoY Change	23.31%	-47.4%	-47.59%
Other Assets	$27.70M	$23.06M	$32.60M
YoY Change	-15.03%	-0.11%	-65.5%
Total Long-Term Assets	$212.8M	$212.6M	$212.6M
YoY Change	0.09%	-25.75%	-25.74%
TOTAL ASSETS
Total Short-Term Assets	$164.2M	$177.0M	$177.0M
Total Long-Term Assets	$212.8M	$212.6M	$212.6M
Total Assets	$377.0M	$389.6M	$389.6M
YoY Change	-3.23%	-41.69%	-41.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$9.400M	$7.575M	$9.500M
YoY Change	-1.05%	8.29%	-10.38%
Accrued Expenses	$19.90M	$17.20M	$17.20M
YoY Change	15.7%	10.97%	10.97%
Deferred Revenue		$860.0K
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$4.700M	$1.125M	$16.10M
YoY Change	-70.81%	-35.49%	847.06%
Total Short-Term Liabilities	$42.20M	$53.98M	$54.00M
YoY Change	-21.85%	-75.67%	-75.65%
LONG-TERM LIABILITIES
Long-Term Debt	$6.400M	$42.02M	$42.00M
YoY Change	-84.76%	-55.44%	-55.46%
Other Long-Term Liabilities	$74.80M	$12.34M	$74.10M
YoY Change	0.94%	26.69%	-43.69%
Total Long-Term Liabilities	$81.20M	$54.36M	$116.1M
YoY Change	-30.06%	-47.75%	-48.61%
TOTAL LIABILITIES
Total Short-Term Liabilities	$42.20M	$53.98M	$54.00M
Total Long-Term Liabilities	$81.20M	$54.36M	$116.1M
Total Liabilities	$126.3M	$170.1M	$170.1M
YoY Change	-25.75%	-62.01%	-62.01%
SHAREHOLDERS EQUITY
Retained Earnings		$216.5M
YoY Change		-9.59%
Common Stock		$4.447M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$250.7M	$219.4M	$219.4M
YoY Change
Total Liabilities & Shareholders Equity	$377.0M	$389.6M	$389.6M
YoY Change	-3.23%	-41.69%	-41.68%

Cashflow Statement

Concept	2018	2017 Q4	2017
OPERATING ACTIVITIES
Net Income	$34.79M	$10.17M	$30.34M
YoY Change	14.66%	-57.85%	2.47%
Depreciation, Depletion And Amortization	$14.68M	$3.200M	$12.77M
YoY Change	15.01%	0.0%	-2.17%
Cash From Operating Activities	$54.62M	$14.20M	$41.31M
YoY Change	32.24%	-66.03%	-56.03%
INVESTING ACTIVITIES
Capital Expenditures	$20.93M	-$6.500M	$15.70M
YoY Change	33.28%	124.14%	54.49%
Acquisitions
YoY Change
Other Investing Activities	-$1.089M	$2.100M	-$1.088M
YoY Change	0.09%	-27.59%	-163.63%
Cash From Investing Activities	-$18.39M	-$4.400M	-$15.01M
YoY Change	22.54%	-4500.0%	52.85%
FINANCING ACTIVITIES
Cash Dividend Paid	$4.578M		$6.682M
YoY Change	-31.49%		-7.99%
Common Stock Issuance & Retirement, Net	$1.294M		$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net	$1.125M		$6.047M
YoY Change	-81.4%		135.84%
Cash From Financing Activities	-$52.58M	-2.200M	-$2.306M
YoY Change	2180.05%	-80.53%	-95.86%
NET CHANGE
Cash From Operating Activities	$54.62M	14.20M	$41.31M
Cash From Investing Activities	-$18.39M	-4.400M	-$15.01M
Cash From Financing Activities	-$52.58M	-2.200M	-$2.306M
Net Change In Cash	-$16.34M	7.600M	$23.99M
YoY Change	-168.11%	-75.16%	-15.54%
FREE CASH FLOW
Cash From Operating Activities	$54.62M	$14.20M	$41.31M
Capital Expenditures	$20.93M	-$6.500M	$15.70M
Free Cash Flow	$33.69M	$20.70M	$25.60M
YoY Change	31.6%	-53.69%	-69.44%

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	0000789933
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	145248626	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	NACCO INDUSTRIES INC
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	true
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2017	nacco	Cashand Cash Equivalents Period Increase Decrease Discontinued Operations CashandCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperations	-8227000	USD
CY2018	nacco	Cashand Cash Equivalents Period Increase Decrease Discontinued Operations CashandCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperations	0	USD
CY2017Q4	nacco	Deferred Tax Liabilities Accrued Pension Benefits DeferredTaxLiabilitiesAccruedPensionBenefits	2570000	USD
CY2017	nacco	Depreciation Depletion And Amortization Production DepreciationDepletionAndAmortizationProduction	10600000	USD
CY2018Q4	nacco	Deferred Tax Liabilities Accrued Pension Benefits DeferredTaxLiabilitiesAccruedPensionBenefits	1380000	USD
CY2017Q4	nacco	Deferred Tax Liabilities Depreciation And Depletion DeferredTaxLiabilitiesDepreciationAndDepletion	23029000	USD
CY2018Q4	nacco	Deferred Tax Liabilities Depreciation And Depletion DeferredTaxLiabilitiesDepreciationAndDepletion	27299000	USD
CY2017Q4	nacco	Deferred Tax Liabilities Partnership Investment Development Costs DeferredTaxLiabilitiesPartnershipInvestmentDevelopmentCosts	4069000	USD
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CY2018	nacco	Depreciation Depletion And Amortization Production DepreciationDepletionAndAmortizationProduction	11600000	USD
CY2017	nacco	Earnings Of Unconsolidated Mines EarningsOfUnconsolidatedMines	61361000	USD
CY2018	nacco	Earnings Of Unconsolidated Mines EarningsOfUnconsolidatedMines	64994000	USD
CY2017	nacco	Income Tax Reconciliation Research And Development And Other Federal Credits IncomeTaxReconciliationResearchAndDevelopmentAndOtherFederalCredits	-301000	USD
CY2018	nacco	Income Tax Reconciliation Research And Development And Other Federal Credits IncomeTaxReconciliationResearchAndDevelopmentAndOtherFederalCredits	37000	USD
CY2018	nacco	Increase Decrease In Contract With Customer Asset Current IncreaseDecreaseInContractWithCustomerAssetCurrent	6206000	USD
CY2018	nacco	Increase Decrease In Contract With Customer Liability Current IncreaseDecreaseInContractWithCustomerLiabilityCurrent	-106000	USD
CY2018	nacco	Increase Decrease In Contract With Customer Liability Noncurrent IncreaseDecreaseInContractWithCustomerLiabilityNoncurrent	242000	USD
CY2018	nacco	Non Employee Directors Annual Retainer Amount Paid NonEmployeeDirectorsAnnualRetainerAmountPaid	90000	USD
CY2017	nacco	Nonoperating Income Expense Closed Mine Obligations NonoperatingIncomeExpenseClosedMineObligations	-1590000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	5962000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	0	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	35630000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	30979000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	22035000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	19058000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	8933000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9347000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	4640000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	4892000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	11723000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	9860000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13579000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	14219000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2846000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2600000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2600000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12767000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14683000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	2162000	USD
CY2018	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2017Q4	us-gaap	Due From Affiliates DueFromAffiliates	19919000	USD
CY2018Q4	us-gaap	Due From Affiliates DueFromAffiliates	7999000	USD
CY2017Q4	us-gaap	Due To Affiliate Current And Noncurrent DueToAffiliateCurrentAndNoncurrent	1925000	USD
CY2018Q4	us-gaap	Due To Affiliate Current And Noncurrent DueToAffiliateCurrentAndNoncurrent	1653000	USD
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.44
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.02
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.41
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.00
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Discontinued Operations EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations	71000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Discontinued Operations EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations	0	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.022
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.175
CY2017Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	13416000	USD
CY2018Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	11030000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	16335000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	20091000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	43554000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	40516000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	5130000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	892000	USD
CY2017	us-gaap	Gross Profit GrossProfit	16919000	USD
CY2018	us-gaap	Gross Profit GrossProfit	29968000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	982000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1000000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	28463000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	34785000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	31454000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	45170000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-2352000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-3007000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29102000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	42163000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.17
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.02
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.14
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.00
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1874000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.27
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.27
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1246000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1276000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	639000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7378000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1453000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	640000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-3132000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10186000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8854000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	224000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	663000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-6253000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-4199000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	273000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	216000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	493000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1241000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	5200000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	500000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1049000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	60000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9311000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3008000	USD
CY2017	us-gaap	Increase Decrease In Due From Affiliates Current IncreaseDecreaseInDueFromAffiliatesCurrent	-516000	USD
CY2018	us-gaap	Increase Decrease In Due From Affiliates Current IncreaseDecreaseInDueFromAffiliatesCurrent	-6771000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	1063000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-2478000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1129000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1193000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	982000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	508000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	334000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	775000	USD
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	43000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	36000	shares
CY2017	us-gaap	Interest Expense InterestExpense	3440000	USD
CY2018	us-gaap	Interest Expense InterestExpense	1998000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	3900000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	2000000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	30015000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	31209000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	170104000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	126287000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	389552000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	376991000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	53976000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	42248000	USD
CY2017	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	30000000	USD
CY2018	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	-396000	USD
CY2017Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	15000000	USD
CY2018Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	4000000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	56700000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	10571000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	10600000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1125000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	654000	USD
CY2017Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	56700000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	5319000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	4225000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	277000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	263000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	250000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	237000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	42021000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6367000	USD
CY2017Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	37005000	USD
CY2018Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	35877000	USD
CY2018Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	35900000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2306000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-52578000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-6053000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-52578000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-15005000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-18387000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-10660000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-18387000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	41305000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	54622000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	49005000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	54622000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	30337000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	34785000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3712000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1461000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	45466000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	51338000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	32814000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	43624000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	21387000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2387000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1659000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2116000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2092000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2174000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	10959000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	4900000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3700000	USD
CY2017	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	600000	USD
CY2018	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	900000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	23063000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	24412000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	363000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	85000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	834000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	941000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1725000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3064000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	188000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-749000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	301000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-440000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	14000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	2369000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	1255000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-582000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-489000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1543000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2017Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	16599000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	558000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1088000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1089000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	20179000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8055000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	6516000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12336000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	15581000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11303000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	7946000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	72000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1294000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	6682000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	4578000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15704000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20930000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	11827000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	10429000	USD
CY2017Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	10843000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	14562000	USD
CY2017	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	300000	USD
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	100000	USD
CY2017	us-gaap	Proceeds From Interest And Dividends Received ProceedsFromInterestAndDividendsReceived	38000000	USD
CY2018	us-gaap	Proceeds From Interest And Dividends Received ProceedsFromInterestAndDividendsReceived	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1324000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	23000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3956000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1454000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	207721000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	220280000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	120068000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	124554000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6047000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	47125000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	216490000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	250352000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	104778000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	135375000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	800000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	700000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	700000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	500000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	100000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P2Y
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	915000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	997000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	250704000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	47491000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	49192000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4520000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3958000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	219448000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1280000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	100000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	82000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	283000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	800000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1100000	USD
CY2018	us-gaap	Variable Interest Entity Ownership Percentage VariableInterestEntityOwnershipPercentage	1
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6873000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6960000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6830000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6924000	shares
CY2018	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Reclassifications:</font><font style="font-family:inherit;font-size:10pt;"> As a result of the adoption of new accounting standards, certain amounts in the prior periods’ Consolidated Financial Statements have been reclassified to conform to the current period's presentation.</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%;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;"> The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and judgments. These estimates and judgments affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities (if any) at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0000789933-19-000013-index-headers.html	Edgar Link	pending
0000789933-19-000013-index.html	Edgar Link	pending
0000789933-19-000013.txt	Edgar Link	pending
0000789933-19-000013-xbrl.zip	Edgar Link	pending
exhibit1014201810-k.htm	Edgar Link	pending
exhibit1015201810-k.htm	Edgar Link	pending
exhibit1033201810-k.htm	Edgar Link	pending
exhibit1037201810-k.htm	Edgar Link	pending
exhibit21201810-k.htm	Edgar Link	pending
exhibit231201810-k.htm	Edgar Link	pending
exhibit2410201810-k.htm	Edgar Link	pending
exhibit241201810-k.htm	Edgar Link	pending
exhibit242201810-k.htm	Edgar Link	pending
exhibit243201810-k.htm	Edgar Link	pending
exhibit244201810-k.htm	Edgar Link	pending
exhibit245201810-k.htm	Edgar Link	pending
exhibit246201810-k.htm	Edgar Link	pending
exhibit247201810-k.htm	Edgar Link	pending
exhibit248201810-k.htm	Edgar Link	pending
exhibit249201810-k.htm	Edgar Link	pending
exhibit311201810-k.htm	Edgar Link	pending
exhibit312201810-k.htm	Edgar Link	pending
exhibit32201810-k.htm	Edgar Link	pending
exhibit45201810-k.htm	Edgar Link	pending
exhibit95201810-k.htm	Edgar Link	pending
exhibit99201810-k.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
nacco-20181231.xml	Edgar Link	completed
nacco-20181231.xsd	Edgar Link	pending
nacco-20181231_cal.xml	Edgar Link	unprocessable
nacco-20181231_def.xml	Edgar Link	unprocessable
nacco-20181231_lab.xml	Edgar Link	unprocessable
nacco-20181231_pre.xml	Edgar Link	unprocessable
nacco10k2018b7wa01.jpg	Edgar Link	pending
nc201810k.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R95.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NC
NACCO INDUSTRIES INC Stock $nc

2018 Form 10-K Financial Statement

#000078993319000013 Filed on March 06, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NC NACCO INDUSTRIES INC Stock $nc

2018 Form 10-K Financial Statement

#000078993319000013 Filed on March 06, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NC
NACCO INDUSTRIES INC Stock $nc