v3.20.2

SUBSEQUENT EVENTS - (Details) - Subsequent Event - Credit Agreement - Line of Credit | Jul. 20, 2020 USD ($)
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Subsequent Event [Line Items] |
Minimum liquidity covenant | $ 75,000,000.0
Letter of credit fees (in percent) | 2.50%
Eurodollar |
Subsequent Event [Line Items] |
Basis spread on variable rate (in percent) | 2.50%
Base Rate |
Subsequent Event [Line Items] |
Basis spread on variable rate (in percent) | 1.50%

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- Definition Debt Instrument, Covenant Terms, Minimum Liquidity + References No definition available. + Details
Name: | etm_DebtInstrumentCovenantTermsMinimumLiquidity
Namespace Prefix: | etm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Letters Of Credit, Fee Percentage + References No definition available. + Details
Name: | etm_LettersOfCreditFeePercentage
Namespace Prefix: | etm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=etm_CreditAgreementDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |