DERIVATIVES AND HEDGING ACTIVITIES (Details) (Swap Expiring May 2012 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Swap Expiring May 2012 [Member]
Derivative Instrument and Hedging Activities [Line Items]
Aggregate notional amounts expired	$ 100
Effective date	May 28, 2008
Derivative Fixed Libor Rate	3.62%

Aggregate notional amount of all expired derivatives. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a expired derivative instrument.

No definition available.

Name:	etm_NotionalAmountOfExpiredDerivatives
Namespace Prefix:	etm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant