Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v2.4.1.9
Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Aug. 31, 2012
Sep. 30, 2014
Aug. 31, 2012
Dec. 31, 2014
Income Taxes (Textual) [Abstract]            
Blended state tax rate 3.92%us-gaap_EffectiveIncomeTaxRateContinuingOperations 3.11%us-gaap_EffectiveIncomeTaxRateContinuingOperations        
Federal statutory income tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate   35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 3500.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate  
Net Operating Loss Carry Forward Period 20 years          
Mowood LLC [Member]            
Income Taxes (Textual) [Abstract]            
Blended state tax rate 5.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
/ dei_LegalEntityAxis
= corr_MowoodLlcMember
5.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
/ dei_LegalEntityAxis
= corr_MowoodLlcMember
       
Subsidiaries [Member]            
Income Taxes (Textual) [Abstract]            
Net operating loss for federal income tax purposes 2.6us-gaap_OperatingLossCarryforwards
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
        $ 1.7us-gaap_OperatingLossCarryforwards
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember