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Stock-Based Compensation (Time Based Restricted Stock Awards) (Details) (Time Based Restricted Stock [Member])
3 Months Ended
Mar. 31, 2015
Time Based Restricted Stock [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested awards outstanding at beginning balance (shares) 238,386us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= rog_TimeBasedRestrictedStockMember
Awards granted (shares) 62,135us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= rog_TimeBasedRestrictedStockMember
Stock issued (shares) (65,684)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= rog_TimeBasedRestrictedStockMember
Awards forfeited (shares) (2,960)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= rog_TimeBasedRestrictedStockMember
Non-vested awards outstanding ending balance (shares) 231,877us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= rog_TimeBasedRestrictedStockMember