Annual report pursuant to Section 13 and 15(d)

Fair Value of Other Securities (Details 3)

v2.4.1.9
Fair Value of Other Securities (Details 3) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]        
Assets, Current     $ 19,202,432us-gaap_AssetsCurrent $ 5,307,970us-gaap_AssetsCurrent
Assets 443,815,842us-gaap_Assets 283,875,659us-gaap_Assets 293,661,985us-gaap_Assets 95,931,078us-gaap_Assets
Liabilities, Current     8,290,065us-gaap_LiabilitiesCurrent 1,552,281us-gaap_LiabilitiesCurrent
Total Liabilities 106,274,800us-gaap_Liabilities 78,334,289us-gaap_Liabilities 82,819,793us-gaap_Liabilities 4,446,481us-gaap_Liabilities
Reported Value Measurement [Member]        
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]        
Assets 411,039,000us-gaap_Assets
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
415,597,000us-gaap_Assets
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
   
Total Liabilities 128,127,000us-gaap_Liabilities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
120,905,000us-gaap_Liabilities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
   
Unconsolidated Affiliates [Member] | Reported Value Measurement [Member]        
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]        
Assets, Current 25,783,000us-gaap_AssetsCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
23,535,000us-gaap_AssetsCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
   
Assets, Noncurrent 385,256,000us-gaap_AssetsNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
392,062,000us-gaap_AssetsNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
   
Liabilities, Current 14,317,000us-gaap_LiabilitiesCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
15,342,000us-gaap_LiabilitiesCurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
   
Liabilities, Noncurrent 113,810,000us-gaap_LiabilitiesNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
105,563,000us-gaap_LiabilitiesNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
   
Members' Equity 282,912,000us-gaap_MembersEquity
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
294,692,000us-gaap_MembersEquity
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
   
Total liabilities and partner's equity $ 411,039,000corr_Totalliabilitiesandpartnersequity
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember
$ 415,597,000corr_Totalliabilitiesandpartnersequity
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis
= corr_UnconsolidatedAffiliatesMember