Annual report pursuant to Section 13 and 15(d)

Mogas Acquisition (Details)

v2.4.1.9
Mogas Acquisition (Details) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Nov. 30, 2012
Nov. 24, 2014
Nov. 17, 2014
Business Acquisition [Line Items]            
Net offering proceeds $ 83,508,150us-gaap_StockIssuedDuringPeriodValueNewIssues $ 141,725,228us-gaap_StockIssuedDuringPeriodValueNewIssues        
Net offering proceeds 84,516,780us-gaap_ProceedsFromIssuanceOfCommonStock 141,797,913us-gaap_ProceedsFromIssuanceOfCommonStock (523,094)us-gaap_ProceedsFromIssuanceOfCommonStock 0us-gaap_ProceedsFromIssuanceOfCommonStock    
Mogas [Member]            
Business Acquisition [Line Items]            
Length of pipeline         263corr_LengthofPipeline
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Acquisition costs   625,000us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
       
Number od delivery points         22corr_NumberofDeliveryPoints
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Acres owned         10.28corr_NumberofAcresOwned
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Consideration transferred         125,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Shares issued during period           14,950,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
Net offering proceeds           102,000,000us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
Share price           $ 6.80us-gaap_SharePrice
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
Net offering proceeds           96,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
Debt amount         32,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Proceeds from debt         29,000,000us-gaap_ProceedsFromDebtNetOfIssuanceCosts
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Deferred finance costs         3,000,000us-gaap_DeferredFinanceCostsGross
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
 
Term Note [Member] | Mogas [Member]            
Business Acquisition [Line Items]            
Debt amount         90,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
/ us-gaap_LongtermDebtTypeAxis
= corr_TermNoteMember
 
Cash in escrow         $ 7,000,000corr_BusinessCombinationCashPlacedinEscrow
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
/ us-gaap_LongtermDebtTypeAxis
= corr_TermNoteMember