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Joint Ventures (Additional Information) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) Entity | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) Entity | Sep. 30, 2014 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of joint ventures that are 50% owned (entity) | 2 |  | 2 |
Equity income related to joint ventures | $ | $ 877 | $ 953 | $ 2,187 | $ 2,992
Rogers INOAC Corporation [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest in joint venture (percent) | 50.00% |  | 50.00% |
Rogers INOAC Suzhou Corporation [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest in joint venture (percent) | 50.00% |  | 50.00% |

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