$HL
HECLA MINING CO/DE/ Stock $hl

$hl Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000143774918002671 Filed on February 15, 2018

Income Statement

Concept	2017 Q4	2017	2016 Q4
Revenue	$160.1M	$577.8M	$164.2M
YoY Change	-2.5%	-10.56%	42.41%
Cost Of Revenue	$113.8M	$425.3M	$120.7M
YoY Change	-5.72%	-7.93%	16.51%
Gross Profit	$46.30M	$152.4M	$43.50M
YoY Change	6.44%	-17.15%	271.79%
Gross Profit Margin	28.92%	26.39%	26.49%
Selling, General & Admin	$6.600M	$35.60M	$13.30M
YoY Change	-50.38%	-20.89%	72.73%
% of Gross Profit	14.25%	23.35%	30.57%
Research & Development	$8.400M	$3.276M	$6.500M
YoY Change	29.23%	1248.15%	91.18%
% of Gross Profit	18.14%	2.15%	14.94%
Depreciation & Amortization	$35.20M	$126.5M	$33.50M
YoY Change	5.07%	1.24%	7.72%
% of Gross Profit	76.03%	82.96%	77.01%
Operating Expenses	$17.60M	$92.34M	$21.60M
YoY Change	-18.52%	23.85%	61.19%
Operating Profit	$28.70M	$60.11M	$21.90M
YoY Change	31.05%	-45.08%	-1388.24%
Interest Expense	-$13.40M	$38.01M	$3.600M
YoY Change	-472.22%	74.4%	-1000.0%
% of Operating Profit	-46.69%	63.24%	16.44%
Other Income/Expense, Net	$500.0K	-$67.66M	$200.0K
YoY Change	150.0%	242.08%	-71.43%
Pretax Income	$9.600M	-$7.557M	$25.10M
YoY Change	-61.75%	-108.43%	-1104.0%
Income Tax	$68.50M	$20.96M	$4.800M
% Of Pretax Income	713.54%		19.12%
Net Earnings	-$29.00M	-$28.52M	$20.30M
YoY Change	-242.86%	-146.32%	-132.22%
Net Earnings / Revenue	-18.11%	-4.94%	12.36%
Basic Earnings Per Share		-$0.07
Diluted Earnings Per Share	-$72.66K	-$0.07	$50.97K
COMMON SHARES
Basic Shares Outstanding		397.4M
Diluted Shares Outstanding		397.4M

Balance Sheet

Concept	2017 Q4	2017	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$219.9M	$219.9M	$201.1M
YoY Change	9.34%	10.56%	29.55%
Cash & Equivalents	$186.1M	$186.1M	$172.0M
Short-Term Investments	$33.76M	$33.80M	$29.10M
Other Short-Term Assets	$10.93M	$13.70M	$12.13M
YoY Change	-9.9%	13.22%	28.27%
Inventory	$55.50M	$55.50M	$50.00M
Prepaid Expenses
Receivables	$14.81M	$14.80M	$20.08M
Other Receivables	$17.40M	$17.40M	$9.900M
Total Short-Term Assets	$321.2M	$321.2M	$291.1M
YoY Change	10.36%	10.34%	8.0%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.999B	$1.999B	$2.033B
YoY Change	-1.64%	-1.64%	7.16%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$7.600M	$7.600M	$5.000M
YoY Change	52.0%	52.0%	233.33%
Other Assets	$14.51M	$17.10M	$4.884M
YoY Change	197.07%	-60.14%	75.49%
Total Long-Term Assets	$2.024B	$2.024B	$2.065B
YoY Change	-1.98%	-2.72%	5.75%
TOTAL ASSETS
Total Short-Term Assets	$321.2M	$321.2M	$291.1M
Total Long-Term Assets	$2.024B	$2.024B	$2.065B
Total Assets	$2.345B	$2.345B	$2.356B
YoY Change	-0.45%	-1.12%	6.02%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$46.50M	$46.50M	$60.10M
YoY Change	-22.63%	-22.63%	17.15%
Accrued Expenses	$43.70M	$43.70M	$42.20M
YoY Change	3.55%	3.55%	-13.17%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due		$5.600M	$470.0K
YoY Change		-8.2%	-82.73%
Total Short-Term Liabilities	$112.1M	$112.1M	$126.2M
YoY Change	-11.17%	-11.17%	-0.68%
LONG-TERM LIABILITIES
Long-Term Debt	$502.2M	$508.4M	$501.0M
YoY Change	0.25%	0.32%	0.16%
Other Long-Term Liabilities	$12.98M	$139.0M	$11.52M
YoY Change	12.72%	2.28%	-78.15%
Total Long-Term Liabilities	$515.2M	$647.4M	$512.5M
YoY Change	0.53%	0.73%	-7.31%
TOTAL LIABILITIES
Total Short-Term Liabilities	$112.1M	$112.1M	$126.2M
Total Long-Term Liabilities	$515.2M	$647.4M	$512.5M
Total Liabilities	$883.9M	$883.9M	$891.8M
YoY Change	-0.89%	-0.89%	1.0%
SHAREHOLDERS EQUITY
Retained Earnings	-$218.1M		-$185.0M
YoY Change	17.86%		-20.43%
Common Stock	$100.9M		$99.81M
YoY Change	1.12%		4.82%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$18.04M		$15.17M
YoY Change	18.9%		41.36%
Treasury Stock Shares	$4.529M		$3.941M
Shareholders Equity	$1.461B	$1.461B	$1.462B
YoY Change
Total Liabilities & Shareholders Equity	$2.345B	$2.345B	$2.372B
YoY Change	-1.12%	-1.12%	6.74%

Cashflow Statement

Concept	2017 Q4	2017	2016 Q4
OPERATING ACTIVITIES
Net Income	-$29.00M	-$28.52M	$20.30M
YoY Change	-242.86%	-146.32%	-132.22%
Depreciation, Depletion And Amortization	$35.20M	$126.5M	$33.50M
YoY Change	5.07%	1.24%	7.72%
Cash From Operating Activities	$41.80M	$115.9M	$52.20M
YoY Change	-19.92%	-48.57%	90.51%
INVESTING ACTIVITIES
Capital Expenditures	-$27.60M	$98.04M	-$44.60M
YoY Change	-38.12%	-40.51%	6.19%
Acquisitions		$0.00
YoY Change		-100.0%
Other Investing Activities	$1.500M	-$1.475M	-$800.0K
YoY Change	-287.5%	-104.93%	-366.67%
Cash From Investing Activities	-$26.20M	-$96.56M	-$45.40M
YoY Change	-42.29%	-51.1%	8.87%
FINANCING ACTIVITIES
Cash Dividend Paid		$4.528M
YoY Change		2.47%
Common Stock Issuance & Retirement, Net		-$6.742M
YoY Change		83.16%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-2.400M	-$5.248M	-4.200M
YoY Change	-42.86%	-56.34%	10.53%
NET CHANGE
Cash From Operating Activities	41.80M	$115.9M	52.20M
Cash From Investing Activities	-26.20M	-$96.56M	-45.40M
Cash From Financing Activities	-2.400M	-$5.248M	-4.200M
Net Change In Cash	13.20M	$15.16M	2.600M
YoY Change	407.69%	-3.85%	-114.36%
FREE CASH FLOW
Cash From Operating Activities	$41.80M	$115.9M	$52.20M
Capital Expenditures	-$27.60M	$98.04M	-$44.60M
Free Cash Flow	$69.40M	$17.84M	$96.80M
YoY Change	-28.31%	-70.53%	39.48%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-87520000
CY2017	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts
CY2017	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	304727000
CY2016	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	338325000
CY2015	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	292378000
CY2017Q4	hl	Deferred Tax Assets Net Operating Loss DeferredTaxAssetsNetOperatingLoss	5000000
CY2017Q4	hl	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Exploration DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredExploration	17426000
CY2016Q4	hl	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Exploration DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredExploration	26785000
CY2015	hl	Accruals For Estimated Costs AccrualsForEstimatedCosts	15114000
CY2016	hl	Accruals For Estimated Costs AccrualsForEstimatedCosts	705000
CY2017	hl	Accruals For Estimated Costs AccrualsForEstimatedCosts	16000
CY2017Q4	hl	Accrued Reclamation And Closure Costs Total AccruedReclamationAndClosureCostsTotal	86045000
CY2016Q4	hl	Accrued Reclamation And Closure Costs Total AccruedReclamationAndClosureCostsTotal	85580000
CY2014Q4	hl	Accrued Reclamation And Closure Costs Total AccruedReclamationAndClosureCostsTotal	57250000
CY2015Q4	hl	Accrued Reclamation And Closure Costs Total AccruedReclamationAndClosureCostsTotal	95538000
CY2017	hl	Availableforsale Equity Securities Acquired During Period Cost Basis AvailableforsaleEquitySecuritiesAcquiredDuringPeriodCostBasis	1600000
CY2016	hl	Availableforsale Equity Securities Acquired During Period Cost Basis AvailableforsaleEquitySecuritiesAcquiredDuringPeriodCostBasis	900000
CY2017Q4	hl	Availableforsale Securities Accumulated Gross Unrealized Loss Before Tax Current AvailableforsaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxCurrent	20000
CY2016Q4	hl	Availableforsale Securities Accumulated Gross Unrealized Loss Before Tax Current AvailableforsaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxCurrent	49000
CY2017Q4	hl	Availableforsale Securities Amortized Cost Basis Current AvailableforsaleSecuritiesAmortizedCostBasisCurrent	33778000
CY2016Q4	hl	Availableforsale Securities Amortized Cost Basis Current AvailableforsaleSecuritiesAmortizedCostBasisCurrent	29166000
CY2017Q4	hl	Average Realized Silver Price Minimum Dividend Threshold AverageRealizedSilverPriceMinimumDividendThreshold	30
CY2017Q4	hl	Capitalized Drilling Costs CapitalizedDrillingCosts	9900000
CY2016Q4	hl	Capitalized Drilling Costs CapitalizedDrillingCosts	6800000
CY2015Q4	hl	Capitalized Drilling Costs CapitalizedDrillingCosts	6700000
CY2017Q4	hl	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reclamation Costs DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReclamationCosts	21812000
CY2016Q4	hl	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reclamation Costs DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReclamationCosts	30188000
CY2017	hl	Defined Benefit Plan Assumed Long Term Rate Basis Spread DefinedBenefitPlanAssumedLongTermRateBasisSpread	0.01
CY2017	hl	Defined Benefit Plan Benefit Obligation Increase Decrease For Discount Rate Change DefinedBenefitPlanBenefitObligationIncreaseDecreaseForDiscountRateChange	5529000
CY2016	hl	Defined Benefit Plan Benefit Obligation Increase Decrease For Discount Rate Change DefinedBenefitPlanBenefitObligationIncreaseDecreaseForDiscountRateChange	5088000
CY2017Q4	hl	Derivative Fair Value Obligations Under The Agreements DerivativeFairValueObligationsUnderTheAgreements	800000
CY2017	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Amount EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignAmount	2300000
CY2016	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Amount EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignAmount
CY2015	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Amount EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignAmount
CY2017	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Percent EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignPercent	-0.63
CY2016	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Percent EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignPercent
CY2015	hl	Effective Income Tax Rate Reconciliation Expired Tax Credit Foreign Percent EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignPercent
CY2017	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Amount EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignAmount	278000
CY2016	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Amount EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignAmount
CY2015	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Amount EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignAmount
CY2017	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Percentage EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignPercentage	-0.08
CY2016	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Percentage EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignPercentage
CY2015	hl	Effective Income Tax Rate Reconciliation Tax Withholding Foreign Percentage EffectiveIncomeTaxRateReconciliationTaxWithholdingForeignPercentage
CY2017	hl	Effective Income Tax Reconciliation Foreign Currency Translation Of Monetary Assets And Liabilities Amount EffectiveIncomeTaxReconciliationForeignCurrencyTranslationOfMonetaryAssetsAndLiabilitiesAmount	10357000
CY2016	hl	Effective Income Tax Reconciliation Foreign Currency Translation Of Monetary Assets And Liabilities Amount EffectiveIncomeTaxReconciliationForeignCurrencyTranslationOfMonetaryAssetsAndLiabilitiesAmount	4598000
CY2015	hl	Effective Income Tax Reconciliation Foreign Currency Translation Of Monetary Assets And Liabilities Amount EffectiveIncomeTaxReconciliationForeignCurrencyTranslationOfMonetaryAssetsAndLiabilitiesAmount	-28184000
CY2017	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts	21301000
CY2016	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts
CY2015	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts
CY2017	hl	Exploration Exploration	23510000
CY2016	hl	Exploration Exploration	14720000
CY2015	hl	Exploration Exploration	17745000
CY2017	hl	Forecasted Cad Denominated Operating Costs To Be Hedged Term ForecastedCADDenominatedOperatingCostsToBeHedgedTerm	P5Y
CY2017	hl	Income Tax Rate Reconciliation Foreign Currency Translation Percentage IncomeTaxRateReconciliationForeignCurrencyTranslationPercentage	-2.84
CY2016	hl	Income Tax Rate Reconciliation Foreign Currency Translation Percentage IncomeTaxRateReconciliationForeignCurrencyTranslationPercentage	0.05
CY2015	hl	Income Tax Rate Reconciliation Foreign Currency Translation Percentage IncomeTaxRateReconciliationForeignCurrencyTranslationPercentage	0.92
CY2017	hl	Increase Decrease In Accrued Reclamation And Closure Costs And Other Non Current Liabilities IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities	5203000
CY2016	hl	Increase Decrease In Accrued Reclamation And Closure Costs And Other Non Current Liabilities IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities	1869000
CY2015	hl	Increase Decrease In Accrued Reclamation And Closure Costs And Other Non Current Liabilities IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities	-8350000
CY2015	hl	Liability Addition Due To Development And Production LiabilityAdditionDueToDevelopmentAndProduction	1189000
CY2017Q4	hl	Liability Related To Withholding Taxes On Foreign Earnings Repatriated LiabilityRelatedToWithholdingTaxesOnForeignEarningsRepatriated	300000
CY2017Q4	hl	Maximum Allocation Of Forecasted Cad Demonimated Operating Costs MaximumAllocationOfForecastedCADDemonimatedOperatingCosts	0.75
CY2017	hl	Operating Loss Carryforwards Expiration Period OperatingLossCarryforwardsExpirationPeriod	P20Y
CY2017Q4	hl	Other Current Assets OtherCurrentAssets	134218000
CY2016Q4	hl	Other Current Assets OtherCurrentAssets	121314000
CY2017Q4	hl	Other Non Current Assets OtherNonCurrentAssets	24611000
CY2016Q4	hl	Other Non Current Assets OtherNonCurrentAssets	47901000
CY2017Q4	hl	Other Non Current Liabilities OtherNonCurrentLiabilities	59611000
CY2016Q4	hl	Other Non Current Liabilities OtherNonCurrentLiabilities	56009000
CY2017	hl	Other Significant Noncash Income Expense OtherSignificantNoncashIncomeExpense	56999000
CY2016	hl	Other Significant Noncash Income Expense OtherSignificantNoncashIncomeExpense	15850000
CY2016	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3153000
CY2015	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3177000
CY2015	hl	Other Significant Noncash Income Expense OtherSignificantNoncashIncomeExpense	71204000
CY2015	hl	Payment Of Reclamation Obligations PaymentOfReclamationObligations	-1544000
CY2016	hl	Payment Of Reclamation Obligations PaymentOfReclamationObligations	-17704000
CY2017	hl	Payment Of Reclamation Obligations PaymentOfReclamationObligations	-3843000
CY2017Q4	hl	Percent Of Shareholders Consent Needed To Create Or Issue Stock Ranking Senior To Series B Preferred Stock PercentOfShareholdersConsentNeededToCreateOrIssueStockRankingSeniorToSeriesBPreferredStock	66.67
CY2017	hl	Predevelopment Predevelopment	5448000
CY2016	hl	Predevelopment Predevelopment	3137000
CY2015	hl	Predevelopment Predevelopment	4213000
CY2015	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-934000
CY2016	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-2211000
CY2017	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-2207000
CY2015	hl	Revision Of Estimated Cash Flows Due To Changes In Reclamation Plans RevisionOfEstimatedCashFlowsDueToChangesInReclamationPlans	4112000
CY2016	hl	Revision Of Estimated Cash Flows Due To Changes In Reclamation Plans RevisionOfEstimatedCashFlowsDueToChangesInReclamationPlans	2759000
CY2017	hl	Revision Of Estimated Cash Flows Due To Changes In Reclamation Plans RevisionOfEstimatedCashFlowsDueToChangesInReclamationPlans	-578000
CY2016Q4	us-gaap	Accumulated Capitalized Interest Costs AccumulatedCapitalizedInterestCosts	16200000
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	954071000
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	842093000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	5000000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-23373000
CY2016	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	3158000
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	4870000
CY2017	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	583728000
CY2016	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	660193000
CY2015	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	437372000
CY2017	hl	Share Based Compensation Arrangement By Share Based Payment Award Measurement Period Used To Value Performance Based Awards ShareBasedCompensationArrangementByShareBasedPaymentAwardMeasurementPeriodUsedToValuePerformanceBasedAwards	P3Y
CY2017Q4	hl	Surety Bonds SuretyBonds	117400000
CY2013Q2	hl	Underwriting Discount On Senior Notes UnderwritingDiscountOnSeniorNotes	0.02
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	46549000
CY2016Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	60064000
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	14805000
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	20082000
CY2017Q4	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	6679000
CY2016Q4	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	5653000
CY2017Q4	us-gaap	Accumulated Capitalized Interest Costs AccumulatedCapitalizedInterestCosts	900000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-34602000
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1619816000
CY2016Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1597212000
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1864000
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1871000
CY2015	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1821000
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	59275000
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	53433000
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	63384000
CY2015	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1904000
CY2017	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	183000
CY2016Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	42200000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	12514000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Rolling Year Four CapitalLeasesFutureMinimumPaymentsDueInRollingYearFour	844000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Rolling Year Three CapitalLeasesFutureMinimumPaymentsDueInRollingYearThree	2156000
CY2016	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	76000
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-578000
CY2016	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	2760000
CY2017Q4	us-gaap	Assets Assets	2364957000
CY2016Q4	us-gaap	Assets Assets	2371677000
CY2015Q4	us-gaap	Assets Assets	2221925000
CY2017Q4	us-gaap	Assets Current AssetsCurrent	320325000
CY2016Q4	us-gaap	Assets Current AssetsCurrent	291091000
CY2017Q4	us-gaap	Available For Sale Equity Securities Amortized Cost Basis AvailableForSaleEquitySecuritiesAmortizedCostBasis	5700000
CY2016Q4	us-gaap	Available For Sale Equity Securities Amortized Cost Basis AvailableForSaleEquitySecuritiesAmortizedCostBasis	4100000
CY2017Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	33758000
CY2016Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	29117000
CY2017Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	33800000
CY2016Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	29100000
CY2017Q4	us-gaap	Available For Sale Securities Equity Securities Noncurrent AvailableForSaleSecuritiesEquitySecuritiesNoncurrent	7600000
CY2016Q4	us-gaap	Available For Sale Securities Equity Securities Noncurrent AvailableForSaleSecuritiesEquitySecuritiesNoncurrent	5000000
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	25000
CY2016	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2695000
CY2015	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2162000
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11801000
CY2016Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11500000
CY2017Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	5608000
CY2016Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	5653000
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	6439000
CY2016	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	2297000
CY2015	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	5090000
CY2017Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	6193000
CY2016Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	5838000
CY2017Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	48600000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Rolling Year Two CapitalLeasesFutureMinimumPaymentsDueInRollingYearTwo	3500000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	713000
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Next Rolling Twelve Months CapitalLeasesFutureMinimumPaymentsNextRollingTwelveMonths	6014000
CY2017Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	33100000
CY2016Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	26000000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	169777000
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	155209000
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	209665000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	186107000
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	16330000
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	14568000
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-54456000
CY2017Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	0
CY2016Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	0
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	403705875
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	399176425
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	395286875
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	100926000
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	99806000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12290000
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	67576000
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-87568000
CY2017Q4	us-gaap	Contractual Obligation ContractualObligation	5800000
CY2017	us-gaap	Cost Of Goods Sold CostOfGoodsSold	420789000
CY2016	us-gaap	Cost Of Goods Sold CostOfGoodsSold	454451000
CY2015	us-gaap	Cost Of Goods Sold CostOfGoodsSold	405056000
CY2017	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	116062000
CY2016	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	116126000
CY2015	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	112678000
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-22171000
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10702000
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3892000
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	22526000
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13713000
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	5376000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	355000
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	24415000
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1484000
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	30766000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-7480000
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	75456000
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-11242000
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	10493000
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-20630000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	19524000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3013000
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	54826000
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	273454000
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	238746000
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	232101000
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	251336000
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	153417000
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	151734000
CY2017Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	1509000
CY2016Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	35815000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	130186000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	82359000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	1003000
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	1058000
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	25411000
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	30166000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	584000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	20405000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	4983000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	7283000
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	2412000
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-4132000
CY2016	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-4372000
CY2015	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-4260000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	0
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	22000000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	12584000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	18115000
CY2017Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	18112000
CY2016Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	34977000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	78684000
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	99602000
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	115806000
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	32094000
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	120037000
CY2016Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	87012000
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	121546000
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	122855000
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4978000
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3046000
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	268476000
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	235700000
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	42243000
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	40917000
CY2017	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	10560000
CY2016	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	9950000
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	1733000
CY2017	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-337000
CY2016	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-337000
CY2015	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-337000
CY2017Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-4856000
CY2016Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-3994000
CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0383
CY2016Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0414
CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.02
CY2016Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.02
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0414
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0445
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0662
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.072
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	132270000
CY2015Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	120237000
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	147023000
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	5222000
CY2016	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	5006000
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	7227000
CY2016	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	9092000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	41589000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	6400000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	8044000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	7404000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	7278000
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	6571000
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-251000
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.06
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5849000
CY2016	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5299000
CY2015	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5382000
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	87357000
CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	73321000
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	99922000
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-47101000
CY2016Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-44913000
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	5356000
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	5229000
CY2015	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4823000
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	8088000
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	8274000
CY2015	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	7580000
CY2017Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	141775000
CY2016Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	128102000
CY2017Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	99922000
CY2016Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	87357000
CY2017Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	147023000
CY2016Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	132270000
CY2017	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	2571000
CY2016	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments
CY2017	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	5222000
CY2016	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	5006000
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	4786000
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	4309000
CY2015	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	4216000
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	114000
CY2016	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	442000
CY2015	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	391000
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.05
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.55
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	121930000
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	117413000
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	112585000
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	800000
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-20741000
CY2016	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	5494000
CY2015	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-11630000
CY2015	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	6200000
CY2017	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	6000000
CY2016	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	14200000
CY2016	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	-2695000
CY2015	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	-2162000
CY2015	us-gaap	Dividends Common Stock DividendsCommonStock	3739000
CY2016	us-gaap	Dividends Common Stock DividendsCommonStock	3867000
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	3976000
CY2015	us-gaap	Dividends Preferred Stock DividendsPreferredStock	552000
CY2016	us-gaap	Dividends Preferred Stock DividendsPreferredStock	552000
CY2017	us-gaap	Dividends Preferred Stock DividendsPreferredStock	552000
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.06
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.23
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.03
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.18
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.01
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.12
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.3
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.12
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.23
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1095000
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-74000
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-5152000
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-5.46
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.28
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-1.84
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	6.72
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.12
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2.77
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-10.31
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.39
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.07
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.15
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	1.42
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.08
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.08
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.18
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.01
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31259000
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	36515000
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	3400000
CY2017	us-gaap	Environmental Expense And Liabilities EnvironmentalExpenseAndLiabilities	4508000
CY2016	us-gaap	Environmental Expense And Liabilities EnvironmentalExpenseAndLiabilities	4813000
CY2015	us-gaap	Environmental Expense And Liabilities EnvironmentalExpenseAndLiabilities	12036000
CY2017	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	6701000
CY2016	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	5721000
CY2015	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	12220000
CY2017	us-gaap	Exploration Expense Mining ExplorationExpenseMining	28958000
CY2016	us-gaap	Exploration Expense Mining ExplorationExpenseMining	17857000
CY2015	us-gaap	Exploration Expense Mining ExplorationExpenseMining	21958000
CY2016	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-177000
CY2015	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-3333000
CY2015	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	8252000
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-166000
CY2016	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments
CY2015	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-44000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-10828000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4649000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	20081000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-10300000
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2926000
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	24551000
CY2016	us-gaap	Foreign Earnings Repatriated ForeignEarningsRepatriated	0
CY2017	us-gaap	Gain Loss On Components Excluded From Assessment Of Foreign Currency Cash Flow Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfForeignCurrencyCashFlowHedgeEffectiveness	5000
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	6042000
CY2016	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	147000
CY2015	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-404000
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	-167000
CY2016	us-gaap	Gain Loss On Investments GainLossOnInvestments
CY2015	us-gaap	Gain Loss On Investments GainLossOnInvestments	-44000
CY2017	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-21250000
CY2016	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	4423000
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	6042000
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	147000
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-404000
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35611000
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	45040000
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	34201000
CY2017	us-gaap	Gross Profit GrossProfit	156986000
CY2016	us-gaap	Gross Profit GrossProfit	191506000
CY2015	us-gaap	Gross Profit GrossProfit	38511000
CY2016	us-gaap	Impairment Of Investments ImpairmentOfInvestments	1000000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-3640000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	96975000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-30658000
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19879000
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27428000
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	56310000
	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	30000000
CY2017Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	10382000
CY2016Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	187000
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-24464000
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-11336000
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	84951000
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	37546000
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1438000
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	6853000
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	4746000
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1274000
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33941000
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-10731000
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-5174000
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-8114000
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-2432000
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	661000
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1517000
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1014000
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-677000
CY2016	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-596000
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	3307000
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1112000
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	565000
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3639000
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	23128000
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6333000
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-4186000
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-16434000
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-6539000
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-4211000
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2414000
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-4233000
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6834000
CY2017	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	2092000
CY2016	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	17705000
CY2015	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	7325000
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-18308000
CY2016	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-2112000
CY2015	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-54978000
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3744000
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5697000
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	854000
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11595000
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-14422000
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1195000
CY2017	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-2234000
CY2016	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	263000
CY2015	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	4653000
CY2017	us-gaap	Interest And Other Income InterestAndOtherIncome	1692000
CY2016	us-gaap	Interest And Other Income InterestAndOtherIncome	507000
CY2015	us-gaap	Interest And Other Income InterestAndOtherIncome	916000
CY2017	us-gaap	Interest Expense InterestExpense	38012000
CY2016	us-gaap	Interest Expense InterestExpense	21796000
CY2015	us-gaap	Interest Expense InterestExpense	25389000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	35624000
CY2016	us-gaap	Interest Paid Net InterestPaidNet	19280000
CY2015	us-gaap	Interest Paid Net InterestPaidNet	22628000
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	5745000
CY2016Q4	us-gaap	Interest Payable Current InterestPayableCurrent	5745000
CY2017Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	28455000
CY2016Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	25944000
CY2017	us-gaap	Inventory Write Down InventoryWriteDown
CY2016	us-gaap	Inventory Write Down InventoryWriteDown	811000
CY2015	us-gaap	Inventory Write Down InventoryWriteDown	1649000
CY2017Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
CY2016Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4800000
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4800000
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3800000
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2600000
CY2017Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2600000
CY2017Q4	us-gaap	Liabilities Liabilities	881075000
CY2016Q4	us-gaap	Liabilities Liabilities	891833000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2364957000
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2371677000
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	112130000
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	126225000
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	508422000
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	506817000
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent
CY2016Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	470000
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	502229000
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	500979000
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	7561000
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	5002000
CY2017Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	79366000
CY2016Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	79927000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5248000
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-12021000
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-17143000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-95395000
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-198665000
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-138606000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	115878000
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	225328000
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	106445000
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-86968000
CY2016	us-gaap	Net Income Loss NetIncomeLoss	69547000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-23519000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-24071000
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68995000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	11229000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	11229000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1971000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-600000
CY2016	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	1048000
CY2015	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-68283000
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-19969000
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	4953000
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4
CY2017	us-gaap	Operating Expenses OperatingExpenses	92343000
CY2016	us-gaap	Operating Expenses OperatingExpenses	74562000
CY2015	us-gaap	Operating Expenses OperatingExpenses	74122000
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	64643000
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	116944000
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	-35611000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	15986000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4812000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2547000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2881000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2882000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2864000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	13715000
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	12125000
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	14509000
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4884000
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	1664000
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-40579000
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	10290000
CY2016	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-5260000
CY2015	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-1326000
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	676000
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-850000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-600000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1971000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-167000
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-1000000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-2993000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax	200000
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax	1000000
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax	3000000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2098000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1613000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-2743000
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2513000
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1874000
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	476000
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	127000
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	127000
CY2017Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	26100000
CY2016Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	24079000
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	10371000
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3064000
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12983000
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	11518000
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-51000
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	174000
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	35000
CY2017	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-71506000
CY2016	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-33362000
CY2015	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-19100000
CY2017Q4	us-gaap	Other Receivables OtherReceivables	7003000
CY2016Q4	us-gaap	Other Receivables OtherReceivables	9780000
	us-gaap	Payments For Brokerage Fees PaymentsForBrokerageFees	362000
CY2017	us-gaap	Payments For Brokerage Fees PaymentsForBrokerageFees	196000
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2643000
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	29946000
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1163000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2868000
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4440000
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	4528000
CY2016	us-gaap	Payments Of Dividends PaymentsOfDividends	4419000
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	4291000
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3976000
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3867000
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3739000
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	552000
CY2016	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	552000
CY2015	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	552000
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	55000000
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired
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CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	56613000
CY2016	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	48943000
CY2015	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	947000
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	98038000
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CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
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CY2017	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	1168000
CY2017Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	7891000
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CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	157816
CY2016Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	157816
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	157816
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	157816
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	39000
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	39000
CY2017	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	7745000
CY2016	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities
CY2015	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	9610000
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8121000
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	6266000
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	3554000
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2001000
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	49969000
CY2016	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	18649000
CY2015	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities
CY2017	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments
CY2016	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments
CY2015	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	14000
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	374000
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	348000
CY2016	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments
CY2015	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments
CY2017	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	105752000
CY2016	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	181799000
CY2015	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	160716000
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2974092000
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2874778000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2020021000
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2032685000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2016	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	645957000
CY2017Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty
CY2016Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty
CY2017	us-gaap	Repayments Of Debt RepaymentsOfDebt	470000
CY2016	us-gaap	Repayments Of Debt RepaymentsOfDebt	2721000
CY2015	us-gaap	Repayments Of Debt RepaymentsOfDebt	870000
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	6516000
CY2016	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	8435000
CY2015	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	9981000
CY2017	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	6986000
CY2016	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	11156000
CY2015	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	10851000
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	3276000
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	243000
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1000000
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1032000
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	2200000
CY2017	us-gaap	Restricted Stock Expense RestrictedStockExpense	4240000
CY2016	us-gaap	Restricted Stock Expense RestrictedStockExpense	5511000
CY2015	us-gaap	Restricted Stock Expense RestrictedStockExpense	3016000
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-195484000
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-167437000
CY2017	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	577775000
CY2015	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	443567000
CY2017	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	577775000
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	645957000
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CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	5425000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	78176
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	3.10
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	884406
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.87
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2095318
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2735564
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	3.41
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	4.52
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1446476
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	3.26
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0
CY2016	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	50252000
CY2015	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	5010000
CY2016	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	7687000
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	17700000
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	9611000
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	8121000
CY2015	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	4819000
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4608847
CY2017	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1828760
CY2017	us-gaap	Stock Issued1 StockIssued1
CY2016	us-gaap	Stock Issued1 StockIssued1	48109000
CY2015	us-gaap	Stock Issued1 StockIssued1	19133000
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	5128000
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	5550000
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3026000
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4463000
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3571000
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	940000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1396974000
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1338926000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1479844000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1483882000
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	5919000
CY2016Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	9061000
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	4529450
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3941210
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	18042000
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	15174000
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" margin: 0pt; text-align: justify; text-indent: 27pt; font-family: Times New Roman, Times, serif; font-size: 10pt;"><div style="display: inline; font-style: italic;">B.<div style="display: inline; font-family: Times New Roman, Times, serif; font-size: 10pt;">  Assumptions and Use of Estimates — </div></div><div style="display: inline; font-family: Times New Roman, Times, serif; font-size: 10pt;">Preparing financial statements requires management to make estimates and assumptions that affect the reported amounts and related disclosure of assets, liabilities, revenue and expenses at the date of the consolidated financial statements and reporting periods. We consider our most critical accounting estimates to be future metals prices; obligations for environmental, reclamation and closure matters; mineral reserves; and valuation of business combinations. Other significant areas requiring the use of management assumptions and estimates relate to reserves for contingencies and litigation; asset impairments, including long-lived assets and investments; valuation of deferred tax assets; and post-employment, post-retirement and other employee benefit assets and liabilities. We have based our estimates on historical experience and on various other assumptions that we believe to be reasonable. Accordingly, actual results <div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> may </div>differ materially from these estimates under different assumptions or conditions.</div></div></div></div></div>
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2906000
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	397394000
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	389322000
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	373954000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	397394000
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	386416000
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	373954000

Files In Submission

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$HL
HECLA MINING CO/DE/ Stock $hl

2017 Q4 Form 10-K Financial Statement

#000143774918002671 Filed on February 15, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HL HECLA MINING CO/DE/ Stock $hl

2017 Q4 Form 10-K Financial Statement

#000143774918002671 Filed on February 15, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HL
HECLA MINING CO/DE/ Stock $hl