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Subsequent Events (Narrative) (Details) (Senior Unsecured Note [Member], USD $)
0 Months Ended 3 Months Ended
Apr. 09, 2015
Mar. 31, 2015
May 31, 2014
Subsequent Event [Line Items]      
Interest rate     6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
Principal amount     $ 200,000,000us-gaap_DebtInstrumentFaceAmount
Subsequent Event      
Subsequent Event [Line Items]      
Additional private offering amount 60,000,000us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Interest rate 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Maturity date   Dec. 31, 2022  
Percentage of issued new senor notes price equal to the principal amount 98.26%ccs_PercentageOfIssuedNewSenorNotesPriceEqualToPrincipalAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Principal amount   $ 200,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember