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Derivative Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Derivative [Line Items]  
Loss on derivative instruments $ (12,547)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Natural gas derivative contract  
Derivative [Line Items]  
Contracts volume, derivative instruments 9,480,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
Natural gas derivative contract | 2015 through December 31, 2018  
Derivative [Line Items]  
Contracts volume, derivative instruments 11,160,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
/ us-gaap_CreationDateAxis
= crr_FiscalYearTwentyFifteenThroughTwentyEighteenMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
Average price 4.57us-gaap_DerivativeAverageForwardPrice
/ us-gaap_CreationDateAxis
= crr_FiscalYearTwentyFifteenThroughTwentyEighteenMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
Cost of Sales  
Derivative [Line Items]  
Loss on derivative instruments $ 12,547us-gaap_GainLossOnDerivativeInstrumentsNetPretax
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember