Annual report pursuant to Section 13 and 15(d)

Fair Value of Other Securities (Details)

v2.4.1.9
Fair Value of Other Securities (Details) (USD $)
 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Nov. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Trading Securities, Unrealized Holding Gain $ 4,663,211us-gaap_TradingSecuritiesUnrealizedHoldingGain $ 0us-gaap_TradingSecuritiesUnrealizedHoldingGain $ 0us-gaap_TradingSecuritiesUnrealizedHoldingGain $ 3,985,269us-gaap_TradingSecuritiesUnrealizedHoldingGain
Trading Securities, Realized Gain (Loss) (6,432,269)us-gaap_TradingSecuritiesRealizedGainLoss 0us-gaap_TradingSecuritiesRealizedGainLoss (251,213)us-gaap_TradingSecuritiesRealizedGainLoss 24,664us-gaap_TradingSecuritiesRealizedGainLoss
Net realized and unrealized gain (loss) on trading securities (1,769,058)us-gaap_NetRealizedOrUnrealizedGainLossOnTradingSecurities 0us-gaap_NetRealizedOrUnrealizedGainLossOnTradingSecurities (251,213)us-gaap_NetRealizedOrUnrealizedGainLossOnTradingSecurities 4,009,933us-gaap_NetRealizedOrUnrealizedGainLossOnTradingSecurities
Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Financing Notes Receivable Fair Value Disclosure     $ 0corr_FinancingNotesReceivableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member 		 
Vantacore Partners LP [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Equity Method Investment, Ownership Percentage   11.10%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ dei_LegalEntityAxis
= corr_VantacorePartnersLpMember