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Goodwill and Intangible Assets (Additional Information) (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jan. 04, 2011
Goodwill and Intangible Assets Disclosure [Line Items]        
Amortization expense $ 6,100,000us-gaap_AmortizationOfIntangibleAssets $ 6,000,000us-gaap_AmortizationOfIntangibleAssets $ 4,400,000us-gaap_AmortizationOfIntangibleAssets  
Estimated future amortization expense for 2015 5,300,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths      
Estimated future amortization expense for 2016 4,900,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo      
Estimated future amortization expense for 2017 4,500,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree      
Estimated future amortization expense for 2018 3,900,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour      
Estimated future amortization expense for 2019 3,400,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive      
Goodwill acquired 98,227,000us-gaap_Goodwill 108,671,000us-gaap_Goodwill    
Annual Impairment Testing        
Sensitivity analysis, Decline in fair value of segment, Percent 10.00%rog_AnnualImpairmentTestingPercentDeclineInOperatingSegment      
High Performance Foams [Member]        
Goodwill and Intangible Assets Disclosure [Line Items]        
Goodwill acquired 23,565,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
24,205,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
   
Annual Impairment Testing        
Fair value of goodwill in excess of carrying value, Percent 318.00%rog_GoodwillExcessofFairValueOverCarryingValuePercent
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
     
Sensitivity analysis, Fair value of goodwill in excess of carrying value, Percent 277.00%rog_AnnualImpairmentTestingPercentDeclineFairValue
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
     
Sensitivity analysis, Discount rate used 13.00%rog_AnnualImpairmentDiscountedCashFlowDiscountRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
     
Sensitivity analysis, Terminal year growth rate 3.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember
     
Curamik Electronics Solutions [Member]        
Goodwill and Intangible Assets Disclosure [Line Items]        
Goodwill acquired 72,400,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= rog_CuramikElectronicsSolutionsMember
     
Annual Impairment Testing        
Fair value of goodwill in excess of carrying value, Percent 85.00%rog_GoodwillExcessofFairValueOverCarryingValuePercent
/ us-gaap_StatementBusinessSegmentsAxis
= rog_CuramikElectronicsSolutionsMember
     
Sensitivity analysis, Fair value of goodwill in excess of carrying value, Percent 65.00%rog_AnnualImpairmentTestingPercentDeclineFairValue
/ us-gaap_StatementBusinessSegmentsAxis
= rog_CuramikElectronicsSolutionsMember
     
Sensitivity analysis, Discount rate used 15.50%rog_AnnualImpairmentDiscountedCashFlowDiscountRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_CuramikElectronicsSolutionsMember
     
Sensitivity analysis, Terminal year growth rate 3.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_CuramikElectronicsSolutionsMember
     
Elastomer Component Division [Member]        
Goodwill and Intangible Assets Disclosure [Line Items]        
Goodwill acquired 2,200,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= rog_ElastomerComponentDivisionMember
     
Annual Impairment Testing        
Fair value of goodwill in excess of carrying value, Percent 77.00%rog_GoodwillExcessofFairValueOverCarryingValuePercent
/ us-gaap_StatementBusinessSegmentsAxis
= rog_ElastomerComponentDivisionMember
     
Sensitivity analysis, Fair value of goodwill in excess of carrying value, Percent 60.00%rog_AnnualImpairmentTestingPercentDeclineFairValue
/ us-gaap_StatementBusinessSegmentsAxis
= rog_ElastomerComponentDivisionMember
     
Sensitivity analysis, Discount rate used 13.00%rog_AnnualImpairmentDiscountedCashFlowDiscountRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_ElastomerComponentDivisionMember
     
Sensitivity analysis, Terminal year growth rate 3.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate
/ us-gaap_StatementBusinessSegmentsAxis
= rog_ElastomerComponentDivisionMember
     
Curamik Electronics GmbH [Member]        
Goodwill and Intangible Assets Disclosure [Line Items]        
Intangible assets acquired       52,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= rog_CuramikElectronicsGmbHMember
Goodwill acquired       79,800,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= rog_CuramikElectronicsGmbHMember
Trademarks acquired       $ 5,300,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= rog_CuramikElectronicsGmbHMember