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Debt (Fixed Charge Metrics) (Details) | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014
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Debt Disclosure [Abstract] |  |  |  |  |
Covenant Limit | 1.75 rog_CovenantRequirementFixedChargeCoverageRatio | 1.75 rog_CovenantRequirementFixedChargeCoverageRatio | 1.75 rog_CovenantRequirementFixedChargeCoverageRatio | 1.75 rog_CovenantRequirementFixedChargeCoverageRatio | 1.75 rog_CovenantRequirementFixedChargeCoverageRatio
Actual FCCR | 2.36 rog_FixedChargeCoverageRatioActual | 2.58 rog_FixedChargeCoverageRatioActual | 2.70 rog_FixedChargeCoverageRatioActual | 2.65 rog_FixedChargeCoverageRatioActual | 2.69 rog_FixedChargeCoverageRatioActual

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- Definition Covenant Requirement, Fixed Charge Coverage Ratio + References No definition available. + Details
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- Definition Fixed Charge Coverage Ratio, Actual + References No definition available. + Details
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- Details
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