ACQUISITONS AND OTHER (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013	Mar. 31, 2011
Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net [Abstract]
Lease Abandonment Liability	$ 0	$ 0.7
Lease Abandonment Expense			0.8
Lease Abandonment Expense Recovery	$ 0.6

The recovery of a previously recorded expense associated with the ceased use of facilities.

No definition available.

Name:	etm_LeaseAbandonmentExpenseRecovery
Namespace Prefix:	etm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant