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FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Value (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Credit Facility    
Fair Value Of Instruments [Line Items]    
Carrying value of debt $ 261,250us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LineOfCreditMember		 $ 262,000us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LineOfCreditMember
Fair value of debt 260,597us-gaap_DebtInstrumentFairValue
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LineOfCreditMember		 261,345us-gaap_DebtInstrumentFairValue
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LineOfCreditMember
Senior Notes    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 218,011us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_SeniorNotesMember		 217,929us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_SeniorNotesMember
Fair value of debt 238,177us-gaap_DebtInstrumentFairValue
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_SeniorNotesMember		 237,134us-gaap_DebtInstrumentFairValue
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_SeniorNotesMember
Finance Method Lease Obligations    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 0us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_CapitalLeaseObligationsMember		 0us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_CapitalLeaseObligationsMember
Letter of credit    
Fair Value Of Instruments [Line Items]    
Carrying value of debt $ 620us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LetterOfCreditMember		 $ 620us-gaap_DebtInstrumentCarryingAmount
/ etm_CarryingAndFairValueOfDebtInstrumentsAxis
= us-gaap_LetterOfCreditMember