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Pension Benefits and Other Postretirement Benefit Plans (Additional Information) (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 plan | Mar. 31, 2017 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Number of qualified noncontributory defined benefit plans | plan | 2 |
Bear Plan |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Required employer contribution | $ |  | $ 0.1

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- Definition Defined Benefit Pension Plan, Required Employer Contribution + References No definition available. + Details
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Namespace Prefix: | rog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Number of Qualified Noncontributory Defined Benefit Plans + References No definition available. + Details
Name: | rog_NumberofQualifiedNoncontributoryDefinedBenefitPlans
Namespace Prefix: | rog_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PlanNameAxis=rog_BearPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |