Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v2.4.1.9
Income Taxes (Details Textual) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2012
Sep. 30, 2014
Aug. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Nov. 30, 2012
Income Taxes (Textual) [Abstract]            
Uncertain tax positions       $ 0corr_UncertainTaxPositions    
Penalties and interest       0us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued    
Blended state tax rate       3.92%us-gaap_EffectiveIncomeTaxRateContinuingOperations 3.11%us-gaap_EffectiveIncomeTaxRateContinuingOperations 2.26%us-gaap_EffectiveIncomeTaxRateContinuingOperations
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    
Net operating loss for federal income tax purposes       1,700,000us-gaap_OperatingLossCarryforwards 17,200,000us-gaap_OperatingLossCarryforwards  
Net operating loss carry forward period         20 years  
Net operating loss expiring on November 30, 2028 if not utilized         8,000corr_NetOperatingLossExpiringOnSpecifiedDateOneIfNotUtilized  
Net operating loss expiring on November 30, 2029 if not utilized         4,000,000corr_NetOperatingLossExpiringOnSpecifiedDateTwoIfNotUtilized  
Net operating loss expiring on November 30, 2030 if not utilized         3,400,000corr_NetOperatingLossExpiringOnSpecifiedDateThreeIfNotUtilized  
Net operating loss expiring on November 30, 2031 if not utilized         24,000corr_NetOperatingLossExpiringOnSpecifiedDateFourIfNotUtilized  
Net operating loss expiring on November 30, 2032 if not utilized         9,800,000corr_NetOperatingLossExpiringOnSpecifiedDateFiveIfNotUtilized  
AMT credit carryforward         194,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax  
Mowood LLC [Member]            
Income Taxes (Textual) [Abstract]            
Blended state tax rate       5.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
/ dei_LegalEntityAxis
= corr_MowoodLlcMember 		   
Subsidiaries [Member]            
Income Taxes (Textual) [Abstract]            
Net operating loss for federal income tax purposes       $ 1,560,000us-gaap_OperatingLossCarryforwards
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		$ 145,000us-gaap_OperatingLossCarryforwards
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember