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Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
Goodwill [Roll Forward] |
Beginning Balance | $ 98,227 us-gaap_Goodwill
Foreign currency translation adjustment | (8,597)us-gaap_GoodwillTranslationAdjustments
Arlon acquisition | 85,379 us-gaap_GoodwillAcquiredDuringPeriod
Ending Balance | 175,009 us-gaap_Goodwill
Printed Circuit Materials [Member] |
Goodwill [Roll Forward] |
Beginning Balance | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_PrintedCircuitMaterialsMember
Foreign currency translation adjustment | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = rog_PrintedCircuitMaterialsMember
Arlon acquisition | 51,862 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = rog_PrintedCircuitMaterialsMember
Ending Balance | 51,862 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_PrintedCircuitMaterialsMember
High Performance Foams [Member] |
Goodwill [Roll Forward] |
Beginning Balance | 23,565 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_HighPerformanceFoamsMember
Foreign currency translation adjustment | (275)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = rog_HighPerformanceFoamsMember
Arlon acquisition | 33,517 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = rog_HighPerformanceFoamsMember
Ending Balance | 56,807 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_HighPerformanceFoamsMember
Power Electronics Solutions [Member] |
Goodwill [Roll Forward] |
Beginning Balance | 72,438 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_PowerElectronicsSolutionsMember
Foreign currency translation adjustment | (8,322)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = rog_PowerElectronicsSolutionsMember
Arlon acquisition | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = rog_PowerElectronicsSolutionsMember
Ending Balance | 64,116 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rog_PowerElectronicsSolutionsMember
Other [Member] |
Goodwill [Roll Forward] |
Beginning Balance | 2,224 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Foreign currency translation adjustment | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Arlon acquisition | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Ending Balance | $ 2,224 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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X
- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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- Details
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X
- Details
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Balance Type: |
Period Type: |

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- Details
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