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Stock-Based Compensation (Additional Information) (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015 offering_period | Mar. 31, 2014
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Options exercised, total intrinsic value | $ 5,700,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue |
Total amount of cash received from exercise of options | 5,300,000 us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions |
Employee Stock Purchase Plan [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Compensation expense (income) | 100,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = rog_EmployeeStockPurchasePlanMember | 100,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = rog_EmployeeStockPurchasePlanMember
Employee stock purchase plan, number of offering (offering period) | 2 rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanNumberOfOfferings / us-gaap_PlanNameAxis = rog_EmployeeStockPurchasePlanMember |
Employee stock purchase plan, offering period (months) | 6 months |
Employee stock purchase plan, purchase price discount (percent) | 15.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate / us-gaap_PlanNameAxis = rog_EmployeeStockPurchasePlanMember |
Stock Options [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Stock options, contractual term (years) | 10 years |
Stock-based compensation, approximate forfeitures rate (percent) | 3.00%rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Compensation expense (income) | 100,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 100,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Performance-Based Restricted Stock [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Stock-based compensation, approximate forfeitures rate (percent) | 7.00%rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |
Compensation expense (income) | 300,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember | 600,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember
Restricted stock award program, measurement period (years) | 3 years |
Expected dividend yield (percent) | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember
Restricted stock award program, payment of award as percentage of target (percent) | 118.20%rog_ShareBasedCompensationArrangementBySharebasedPaymentAwardPercentageOfActualPaymentOfTargetAmount / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |
Performance-Based Restricted Stock [Member] | Minimum [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Restricted stock award program, awarded shares as a percentage of the original award amount (percent) | 0.00%rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetAwardPercentage / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Performance-Based Restricted Stock [Member] | Maximum [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Restricted stock award program, awarded shares as a percentage of the original award amount (percent) | 200.00%rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetAwardPercentage / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Time Based Restricted Stock [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Stock-based compensation, approximate forfeitures rate (percent) | 7.00%rog_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures / us-gaap_AwardTypeAxis = rog_TimeBasedRestrictedStockMember |
Compensation expense (income) | 1,100,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = rog_TimeBasedRestrictedStockMember | 900,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = rog_TimeBasedRestrictedStockMember
Time Based Restricted Stock [Member] | 2012 Grants [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Restricted stock award program, vesting period (years) | 3 years |
Time Based Restricted Stock [Member] | 2011 Grants [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Restricted stock award program, vesting period (years) | 4 years |
Deferred Stock Units [Member] |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |
Compensation expense (income) | $ 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = rog_DeferredStockUnitsMember | $ 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = rog_DeferredStockUnitsMember

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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