Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details)

v2.4.1.9
Leases - Narrative (Details) (USD $)
3 Months Ended 1 Months Ended 12 Months Ended
Mar. 31, 2015
lease
payment
Mar. 31, 2014
Dec. 31, 2012
Dec. 31, 2014
Oct. 31, 2012
Dec. 20, 2012
Operating Leased Assets [Line Items]            
Number of Significant Leases 3corr_NumberofSignificantLeases          
Deferred lease costs, net of accumulated amortization of $139,983 and $124,641 $ 780,000us-gaap_DeferredCostsLeasingNet     $ 796,000us-gaap_DeferredCostsLeasingNet    
Deferred Costs Amortization Period 3 years          
Amortization expense 15,000us-gaap_AmortizationOfIntangibleAssets          
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
2016 4.1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo          
2017 4.1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree          
2018 4.1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour          
2019 4.1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive          
Number of Remaining Lease Payments 3corr_NumberofRemainingLeasePayments          
Revenues 13,987,883us-gaap_Revenues 10,047,557us-gaap_Revenues        
Public Service Copmany of New Mexico [Member]            
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
Number of Customers Served 500,000corr_NumberOfCustomersServed
/ us-gaap_LeaseArrangementTypeAxis
= corr_PublicServiceCopmanyOfNewMexicoMember
         
Sales Lease Back Intangible Asset Amortized 1,100,000corr_SalesLeaseBackIntangibleAssetAmortized
/ us-gaap_LeaseArrangementTypeAxis
= corr_PublicServiceCopmanyOfNewMexicoMember
         
Business Acquisition, Percentage of Voting Interests Acquired         40.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_LeaseArrangementTypeAxis
= corr_PublicServiceCopmanyOfNewMexicoMember
 
Lease Expiration Date Apr. 01, 2015          
Lease Rental Receipt Semi Annually 1,400,000corr_LeaseRentalReceiptSemiAnnually
/ us-gaap_LeaseArrangementTypeAxis
= corr_PublicServiceCopmanyOfNewMexicoMember
         
Pinedale Liquids Gathering System [Member]            
Operating Leased Assets [Line Items]            
Settlement date     Dec. 20, 2012      
Term of contract     15 years      
Renewal term     5 years      
Annual Rent Escalator     2.00%corr_AnnualRentEscalator
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
     
Rent, Quarterly Increase, Based on CPI 5,200,000corr_RentQuarterlyIncreaseBasedonCPI
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
    85,000corr_RentQuarterlyIncreaseBasedonCPI
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
   
Deferred Costs Amortization Period 15 years          
Property, Plant and Equipment, Useful Life 26 years          
Pinedale Liquids Gathering System [Member] | Real Property [Member]            
Operating Leased Assets [Line Items]            
Business Combination, Contingent Consideration, Asset, Noncurrent 122,300,000us-gaap_BusinessCombinationContingentConsiderationAssetNoncurrent
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= corr_RealPropertyMember
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
         
Pinedale Liquids Gathering System [Member] | Land Rights [Member]            
Operating Leased Assets [Line Items]            
Business Combination, Contingent Consideration, Asset, Noncurrent 105,700,000us-gaap_BusinessCombinationContingentConsiderationAssetNoncurrent
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= corr_LandRightsMember
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
         
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
Remainder of 2015 4,100,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= corr_LandRightsMember
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
         
Minimum [Member] | Pinedale Liquids Gathering System [Member]            
Operating Leased Assets [Line Items]            
Operating Lease, Annual Rent Payment           20,000,000corr_OperatingLeaseAnnualRentPayment
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
Maximum [Member] | Pinedale Liquids Gathering System [Member]            
Operating Leased Assets [Line Items]            
Operating Lease, Annual Rent Payment           27,500,000corr_OperatingLeaseAnnualRentPayment
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_SaleLeasebackTransactionDescriptionAxis
= corr_PinedaleLiquidsGatheringSystemMember
Portland Terminal Facility [Member]            
Operating Leased Assets [Line Items]            
Term of contract 15 years          
Variable rent payment, daily volume threshold 12,500corr_LeaseAgreementVariableRentPaymentDailyVolumeThreshold
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Variable rent payment, maximum percent of total rent 30.00%corr_LeaseAgreementVariableRentPaymentMaximumPercentofTotalRent
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Amount monthly rent is increased to 480,000corr_OperatingLeasesMonthlyRentExpenseMaximum
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Additional Expected Project Costs 7,800,000corr_AdditionalExpectedProjectCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
Construction and Development Costs 10,000,000us-gaap_ConstructionAndDevelopmentCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Increase in Rent from Construction 173,000corr_IncreaseinRentfromConstruction
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= corr_PortlandTerminalFacilityMember
         
Future Expectations [Member] | Public Service Copmany of New Mexico [Member]            
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
Fair Value of Lease Option Under Agreement 7,700,000corr_FairValueOfLeaseOptionUnderAgreement
/ us-gaap_LeaseArrangementTypeAxis
= corr_PublicServiceCopmanyOfNewMexicoMember
/ corr_TriggeringEventsAxis
= corr_FutureExpectationsMember
         
Lease Revenue [Member]            
Operating Leased Assets [Line Items]            
Amortization expense 73,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_IncomeStatementLocationAxis
= corr_LeaseRevenueMember
         
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]            
Revenues $ 638,000us-gaap_Revenues
/ us-gaap_IncomeStatementLocationAxis
= corr_LeaseRevenueMember