Joint Ventures (Accounted for Under Equity Method of Accounting) (Details)	3 Months Ended
Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--12-31
Rogers INOAC Corporation [Member] \| JAPAN [Member] \| High Performance Foams [Member]
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--10-31
Rogers INOAC Suzhou Corporation [Member] \| CHINA [Member] \| High Performance Foams [Member]
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--12-31

End date of current fiscal year in the format --MM-DD.

No definition available.

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Namespace Prefix:	dei_
Data Type:	xbrli:gMonthDayItemType
Balance Type:	na
Period Type:	duration