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GOODWILL AND RADIO BROADCASTING LICENSES: (Details Textual) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended
	Mar. 31, 2013 Cincinnati Fcc Radio Broadcasting Licenses [Member]	Jun. 30, 2013 Philadelphia, Cincinnati And Cleveland Radio Broadcasting Licenses [Member]	Sep. 30, 2013 Boston And Cleveland Radio Broadcasting Licenses [Member]	Sep. 30, 2012 Charlotte Radio Broadcasting Licenses [Member]
Indefinite-Lived Intangible Assets, Impairment Losses	$ 1,400,000	$ 9,800,000	$ 3,700,000	$ 313,000

X

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

+ Details

Name:	us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration