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Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Current        
Federal $ (69,000)us-gaap_CurrentFederalTaxExpenseBenefit $ 530,000us-gaap_CurrentFederalTaxExpenseBenefit $ 1,362,000us-gaap_CurrentFederalTaxExpenseBenefit  
State (195,000)us-gaap_CurrentStateAndLocalTaxExpenseBenefit (225,000)us-gaap_CurrentStateAndLocalTaxExpenseBenefit 683,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit  
Foreign 10,318,000us-gaap_CurrentForeignTaxExpenseBenefit 6,065,000us-gaap_CurrentForeignTaxExpenseBenefit 9,396,000us-gaap_CurrentForeignTaxExpenseBenefit  
Total current 10,054,000us-gaap_CurrentIncomeTaxExpenseBenefit 6,370,000us-gaap_CurrentIncomeTaxExpenseBenefit 11,441,000us-gaap_CurrentIncomeTaxExpenseBenefit  
Deferred        
Federal (1,509,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (6,685,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (361,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit  
State 3,784,000us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (1,121,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (495,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit  
Foreign (2,625,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (2,018,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (1,156,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit  
Total deferred (350,000)us-gaap_DeferredIncomeTaxExpenseBenefit (9,824,000)us-gaap_DeferredIncomeTaxExpenseBenefit (2,012,000)us-gaap_DeferredIncomeTaxExpenseBenefit (2,012,000)us-gaap_DeferredIncomeTaxExpenseBenefit
Total tax provision (benefit) 9,704,000us-gaap_IncomeTaxExpenseBenefit (3,454,000)us-gaap_IncomeTaxExpenseBenefit 9,429,000us-gaap_IncomeTaxExpenseBenefit 9,429,000us-gaap_IncomeTaxExpenseBenefit
Effective Income Tax Rate Reconciliation Detail [Table]        
Income tax provision (benefit) computed at statutory federal income tax rates (55,254,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (45,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate 9,864,000us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate  
State income taxes (net of federal benefit) (1,730,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes (608,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 1,163,000us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes  
Nondeductible expenses 1,433,000us-gaap_IncomeTaxReconciliationNondeductibleExpense 1,382,000us-gaap_IncomeTaxReconciliationNondeductibleExpense 1,460,000us-gaap_IncomeTaxReconciliationNondeductibleExpense  
Impact of international operations (7,408,000)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (3,504,000)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (2,697,000)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential  
Goodwill impairments 7,442,000us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses 0us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses 0us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses  
Valuation allowance 67,781,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance (301,000)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance (721,000)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance  
Other (2,560,000)us-gaap_IncomeTaxReconciliationOtherReconcilingItems (378,000)us-gaap_IncomeTaxReconciliationOtherReconcilingItems 360,000us-gaap_IncomeTaxReconciliationOtherReconcilingItems  
Total tax provision (benefit) 9,704,000us-gaap_IncomeTaxExpenseBenefit (3,454,000)us-gaap_IncomeTaxExpenseBenefit 9,429,000us-gaap_IncomeTaxExpenseBenefit 9,429,000us-gaap_IncomeTaxExpenseBenefit
Undistributed earnings intended for investment 37,000,000us-gaap_IncomeTaxReconciliationOtherAdjustments      
Domestic and Foreign Income Before Tax Detail [Table]        
Domestic (138,639,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic (14,322,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 2,206,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic  
International (19,231,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 14,194,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 25,977,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign  
Total (157,870,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (128,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 28,183,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments  
Unrecognized Tax Benefit Liability Rollforward Detail [Table]        
Gross unrecognized tax benefits at beginning of period 2,018,000us-gaap_UnrecognizedTaxBenefits 2,327,000us-gaap_UnrecognizedTaxBenefits 1,552,000us-gaap_UnrecognizedTaxBenefits  
Additions related to acquisitions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition 742,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition  
Increases in tax positions for prior years 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions  
Decreases in tax positions for prior years 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions 118,000us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions  
Increases in tax positions for current year 191,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 202,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 313,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions  
Settlements 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities  
Lapse in statute of limitations (250,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (393,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (280,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations  
Gross unrecognized tax benefits at end of period 1,959,000us-gaap_UnrecognizedTaxBenefits 2,018,000us-gaap_UnrecognizedTaxBenefits 2,327,000us-gaap_UnrecognizedTaxBenefits 1,552,000us-gaap_UnrecognizedTaxBenefits
Recognized interest and penalties 200,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense (200,000)us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense 300,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense  
Accrued potential interest and penalties 2,100,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued 2,100,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued    
Amount of unrecognized tax benefits that would affect effective tax rate 2,100,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 2,100,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Deferred tax assets:        
Net operating losses 88,867,000us-gaap_DeferredTaxAssetsOtherLossCarryforwards 51,130,000us-gaap_DeferredTaxAssetsOtherLossCarryforwards    
Foreign tax credits and alternative minimum tax credits 15,910,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 10,233,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards    
Accruals 35,135,000us-gaap_DeferredTaxAssetsOtherTaxCarryforwards 30,057,000us-gaap_DeferredTaxAssetsOtherTaxCarryforwards    
All other 2,855,000us-gaap_DeferredTaxAssetsOther 2,167,000us-gaap_DeferredTaxAssetsOther    
Total deferred tax assets 142,767,000us-gaap_DeferredTaxAssetsGross 93,587,000us-gaap_DeferredTaxAssetsGross    
Valuation allowance (73,696,000)us-gaap_DeferredTaxAssetsValuationAllowance (3,747,000)us-gaap_DeferredTaxAssetsValuationAllowance    
Net deferred tax assets 69,071,000us-gaap_DeferredTaxAssetsNet 89,840,000us-gaap_DeferredTaxAssetsNet    
Deferred tax liabilities:        
Excess book over tax basis in property, plant, and equipment 77,751,000us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment 88,030,000us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment    
All other 844,000us-gaap_DeferredTaxLiabilitiesOther 4,730,000us-gaap_DeferredTaxLiabilitiesOther    
Total deferred tax liability 78,595,000us-gaap_DeferredTaxLiabilities 92,760,000us-gaap_DeferredTaxLiabilities    
Net deferred tax liability 9,524,000us-gaap_DeferredTaxAssetsLiabilitiesNet 2,920,000us-gaap_DeferredTaxAssetsLiabilitiesNet    
Increase (decrease) in valuation allowance 69,900,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (300,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (700,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount  
Foreign and state net operating loss carryforwards 88,900,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards      
Foreign tax credits $ 15,000,000us-gaap_TaxCreditCarryforwardAmount