v2.4.1.9

SHARE-BASED COMPENSATION - RSUs with Market Conditions (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Restricted Stock Units With Market Conditions [Line Items]
RSUs issued	645,601us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Reconciliation Of RSUs With Market Conditions [Abstract]
RSUs beginning	1,258,685us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Number of RSUs granted	645,601us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Number of RSUs forfeited	(13,499)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Number of RSUs vested	(336,229)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
RSUs ending	1,554,558us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1,258,685us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Net RSUs increase (decrease) to APIC	$ 1,111us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	$ 5,232us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
Restricted Stock Units With Market Conditions [Member]
Share-based Compensation Restricted Stock Units With Market Conditions [Line Items]
RSUs issued	165,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	290,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
Reconciliation Of RSUs With Market Conditions [Abstract]
RSUs beginning	290,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
Number of RSUs granted	165,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	290,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
Number of RSUs forfeited	0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
Number of RSUs vested	(193,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
RSUs ending	262,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	290,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember
Fair value of each RSU issued with market conditions	$ 8.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodIntrinsicValue / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember	$ 6.9us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodIntrinsicValue / us-gaap_AwardTypeAxis = etm_RestrictedStockUnitsWithMarketConditionsMember

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB

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Per share weighted average intrinsic value of equity-based compensation awards granted. Excludes stock and unit options.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

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