Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details Textual)

v2.4.1.9
Significant Accounting Policies (Details Textual) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2014
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2012
Feb. 29, 2012
Sep. 30, 2014
Aug. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Nov. 30, 2012
Effective Income Tax Rate Reconciliation, at Federal Capital Gain Tax Rate                         20.00%corr_EffectiveIncomeTaxRateReconciliationAtFederalCapitalGainTaxRate 15.00%corr_EffectiveIncomeTaxRateReconciliationAtFederalCapitalGainTaxRate
Basic and Diluted (in dollars per share) $ 0.10us-gaap_EarningsPerShareBasicAndDiluted $ 0.00us-gaap_EarningsPerShareBasicAndDiluted $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted $ (0.10)us-gaap_EarningsPerShareBasicAndDiluted $ (0.07)us-gaap_EarningsPerShareBasicAndDiluted $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted $ (0.02)us-gaap_EarningsPerShareBasicAndDiluted $ 0.00us-gaap_EarningsPerShareBasicAndDiluted $ (0.10)us-gaap_EarningsPerShareBasicAndDiluted     $ (0.21)us-gaap_EarningsPerShareBasicAndDiluted $ (0.19)us-gaap_EarningsPerShareBasicAndDiluted $ (1.34)us-gaap_EarningsPerShareBasicAndDiluted
Other Deferred Costs, Net   $ 85,000us-gaap_OtherDeferredCostsNet                   $ 85,000us-gaap_OtherDeferredCostsNet $ 0us-gaap_OtherDeferredCostsNet  
Goodwill   1,718,868us-gaap_Goodwill                   1,718,868us-gaap_Goodwill 0us-gaap_Goodwill  
Federal statutory income tax rate             35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate     3500.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate    
Amortization of Financing Costs 0us-gaap_AmortizationOfFinancingCosts                     1,000us-gaap_AmortizationOfFinancingCosts 0us-gaap_AmortizationOfFinancingCosts 0us-gaap_AmortizationOfFinancingCosts
Federal Minimum Alternative Minimum Tax Rate                   2000.00%corr_FederalMinimumAlternativeMinimumTaxRate        
Reclassification of Allocated Income and Return of Capital [Member] | Restatement Adjustment [Member]                            
Trading Securities, Change in Unrealized Holding Gain (Loss)                         (863,000)us-gaap_TradingSecuritiesUnrealizedHoldingGainLoss
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= corr_ReclassificationofAllocatedIncomeandReturnofCapitalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
(567,000)us-gaap_TradingSecuritiesUnrealizedHoldingGainLoss
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= corr_ReclassificationofAllocatedIncomeandReturnofCapitalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
Basic and Diluted (in dollars per share)                         $ 0.04us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= corr_ReclassificationofAllocatedIncomeandReturnofCapitalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
$ 0.06us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= corr_ReclassificationofAllocatedIncomeandReturnofCapitalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_RestatementAdjustmentMember
Mogas [Member]                            
Goodwill   $ 1,718,868us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember
                  $ 1,718,868us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= corr_MogasMember