Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details)

v2.4.1.9
Concentrations (Details) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2012
Debt issuance cost       $ 1,500,000us-gaap_DebtIssuanceCosts
Percentage of Capacity 66.00%corr_PercentageofCapacity      
Revenue related to the DOD contract   91.00%corr_PercentageOfRevenueRelatedToDepartmentOfDefenseContract    
Percentage of amounts due from the department of defense in relation to consolidated accounts receivable 88.00%corr_PercentageOfAmountsDueFromDepartmentOfDefenseInRelationToConsolidatedAccountsReceivable 94.00%corr_PercentageOfAmountsDueFromDepartmentOfDefenseInRelationToConsolidatedAccountsReceivable    
Percentage of payment to supplier of natural gas in relation to cost of sales   96.00%corr_PercentageOfPaymentToSupplierOfNaturalGasInRelationToCostOfSales 77.00%corr_PercentageOfPaymentToSupplierOfNaturalGasInRelationToCostOfSales  
Key Bank [Member] | Secured Debt [Member]        
Debt issuance cost   371,000us-gaap_DebtIssuanceCosts
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
/ us-gaap_LineOfCreditFacilityAxis
= corr_KeyBankMember 		501,000us-gaap_DebtIssuanceCosts
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
/ us-gaap_LineOfCreditFacilityAxis
= corr_KeyBankMember