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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income before taxes      
United States $ 87,505us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 67,355us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 79,812us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign 31,659us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 51,303us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 23,294us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income before income taxes 119,164us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 118,658us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 103,106us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Current:      
Federal 22,608us-gaap_CurrentFederalTaxExpenseBenefit 19,421us-gaap_CurrentFederalTaxExpenseBenefit 28,076us-gaap_CurrentFederalTaxExpenseBenefit
State 1,406us-gaap_CurrentStateAndLocalTaxExpenseBenefit 1,618us-gaap_CurrentStateAndLocalTaxExpenseBenefit 1,768us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign 12,326us-gaap_CurrentForeignTaxExpenseBenefit 11,864us-gaap_CurrentForeignTaxExpenseBenefit 5,456us-gaap_CurrentForeignTaxExpenseBenefit
Current income tax expense (benefit) 36,340us-gaap_CurrentIncomeTaxExpenseBenefit 32,903us-gaap_CurrentIncomeTaxExpenseBenefit 35,300us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Federal 3,135us-gaap_DeferredFederalIncomeTaxExpenseBenefit 21us-gaap_DeferredFederalIncomeTaxExpenseBenefit (3,477)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State and local 180us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (364)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (684)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Foreign (3,563)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (1,264)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (357)us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Deferred income tax expense (benefit) (248)us-gaap_DeferredIncomeTaxExpenseBenefit (1,607)us-gaap_DeferredIncomeTaxExpenseBenefit (4,518)us-gaap_DeferredIncomeTaxExpenseBenefit
Income Tax Expense (Benefit), Continuing Operations 36,092us-gaap_IncomeTaxExpenseBenefit 31,296us-gaap_IncomeTaxExpenseBenefit 30,782us-gaap_IncomeTaxExpenseBenefit
Effective Tax Rate Reconciliation      
Income tax expense at U.S. federal statutory rate 41,708us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate 41,530us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate 36,087us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal tax benefit 841us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 757us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 711us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Foreign income, net of credit on foreign taxes (245)gtls_ForeignIncomeLossNetOfCreditOnForeignTaxes 501gtls_ForeignIncomeLossNetOfCreditOnForeignTaxes 48gtls_ForeignIncomeLossNetOfCreditOnForeignTaxes
Effective tax rate differential of earnings outside of U.S. (5,411)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (8,257)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (4,983)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Foreign investment tax credit 0us-gaap_IncomeTaxReconciliationTaxCreditsForeign 0us-gaap_IncomeTaxReconciliationTaxCreditsForeign (406)us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount (1,150)us-gaap_IncomeTaxReconciliationTaxCreditsResearch (2,105)us-gaap_IncomeTaxReconciliationTaxCreditsResearch 0us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Non-deductible items 1,947us-gaap_IncomeTaxReconciliationNondeductibleExpense 865us-gaap_IncomeTaxReconciliationNondeductibleExpense 2,885us-gaap_IncomeTaxReconciliationNondeductibleExpense
Change in uncertain tax positions (52)us-gaap_IncomeTaxReconciliationTaxContingencies (347)us-gaap_IncomeTaxReconciliationTaxContingencies (394)us-gaap_IncomeTaxReconciliationTaxContingencies
Domestic production activities deduction (2,093)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities (2,237)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities (2,490)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities
Other items 547us-gaap_IncomeTaxReconciliationOtherAdjustments 589us-gaap_IncomeTaxReconciliationOtherAdjustments (676)us-gaap_IncomeTaxReconciliationOtherAdjustments
Deferred tax assets:      
Accruals and reserves 23,197us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals 25,478us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals  
Pensions 6,161us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions 2,536us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions  
Inventory 5,176us-gaap_DeferredTaxAssetsInventory 4,350us-gaap_DeferredTaxAssetsInventory  
Stock options 7,235us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 6,107us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost  
Tax credit carryforwards 553us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 0us-gaap_DeferredTaxAssetsTaxCreditCarryforwards  
Foreign net operating loss carryforwards 1,154us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign 594us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign  
State net operating loss carryforward 1,331us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal 1,610us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal  
Other - net 3,230us-gaap_DeferredTaxAssetsOther 844us-gaap_DeferredTaxAssetsOther  
Total deferred tax assets before valuation allowance 48,037us-gaap_DeferredTaxAssetsGross 41,519us-gaap_DeferredTaxAssetsGross  
Valuation allowance (1,982)us-gaap_DeferredTaxAssetsValuationAllowance (1,250)us-gaap_DeferredTaxAssetsValuationAllowance  
Total deferred tax assets, net of valuation allowance 46,055us-gaap_DeferredTaxAssetsNet 40,269us-gaap_DeferredTaxAssetsNet  
Deferred tax liabilities:      
Property, plant and equipment 24,063us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment 17,248us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment  
Intangibles 47,771us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets 53,314us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets  
Deferred Tax Liabilities, Convertible Notes 2,118gtls_DeferredTaxLiabilitiesConvertibleNotes 2,623gtls_DeferredTaxLiabilitiesConvertibleNotes  
Total deferred tax liabilities 73,952us-gaap_DeferredTaxLiabilities 73,185us-gaap_DeferredTaxLiabilities  
Net deferred tax liabilities 27,897us-gaap_DeferredTaxAssetsLiabilitiesNet 32,916us-gaap_DeferredTaxAssetsLiabilitiesNet  
Deferred Tax Assets, Net, Current (17,248)us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent (14,675)us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent  
Deferred Tax Assets, Net, Noncurrent (1,743)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent (125)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent  
Long-term deferred tax liabilities 46,888us-gaap_DeferredTaxLiabilitiesNoncurrent 47,716us-gaap_DeferredTaxLiabilitiesNoncurrent  
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized Tax Benefits Beginning Balance 941us-gaap_UnrecognizedTaxBenefits 3,339us-gaap_UnrecognizedTaxBenefits 2,440us-gaap_UnrecognizedTaxBenefits
Additions for tax positions of prior years 358us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 299us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 1,921us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions of prior years (329)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (1,921)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities (905)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Lapse of statutes of limitation (22)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (776)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (117)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Unrecognized Tax Benefits Ending Balance 948us-gaap_UnrecognizedTaxBenefits 941us-gaap_UnrecognizedTaxBenefits 3,339us-gaap_UnrecognizedTaxBenefits
Undistributed Earnings of Foreign Subsidiaries 203,420us-gaap_UndistributedEarningsOfForeignSubsidiaries    
Income Taxes Paid 31,208us-gaap_IncomeTaxesPaid 24,977us-gaap_IncomeTaxesPaid 19,193us-gaap_IncomeTaxesPaid
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 462us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 410us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 94us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 93us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued  
Unrecognized Tax Benefits, Interest on Income Taxes Expense (Benefit) 1us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense (8)us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense 42us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Possible future decreases in unrecognized tax benefits $ 22us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit