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NATURE OF OPERATIONS AND ACCOUNTING POLICIES Concentrations of Credit Risk Narrative (Details) (Accounts Receivable [Member], Customer Concentration Risk [Member])
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12 Months Ended | |
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Dec. 31, 2014
customer
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Dec. 31, 2013
customer
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Accounts Receivable [Member] | Customer Concentration Risk [Member]
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| Concentration Risk [Line Items] | ||
| Number of major customers |
2era_ConcentrationRiskNumberofMajorCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
2era_ConcentrationRiskNumberofMajorCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
| Concentration Risk, Percentage |
31.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
24.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
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- Definition
Concentration Risk, Number of Major Customers No definition available.
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- Details
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- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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