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Segment Information (Assets by Reportable Segment) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]    
Assets $ 985,062us-gaap_Assets $ 835,117us-gaap_Assets
Reportable Segment [Member]    
Segment Reporting Information [Line Items]    
Assets 985,062us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember		  
Reportable Segment [Member] | Printed Circuit Materials [Member]    
Segment Reporting Information [Line Items]    
Assets 332,712us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= rog_PrintedCircuitMaterialsMember		  
Reportable Segment [Member] | High Performance Foams [Member]    
Segment Reporting Information [Line Items]    
Assets 280,585us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= rog_HighPerformanceFoamsMember		  
Reportable Segment [Member] | Power Electronics Solutions [Member]    
Segment Reporting Information [Line Items]    
Assets 330,631us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= rog_PowerElectronicsSolutionsMember		  
Reportable Segment [Member] | Other [Member]    
Segment Reporting Information [Line Items]    
Assets $ 41,134us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember