INTANGIBLE ASSETS AND GOODWILL (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		6 Months Ended																								12 Months Ended
	Dec. 31, 2012 number	Dec. 31, 2011	Jun. 30, 2012 Broadcasting License Impairment Testing [Member]	Jun. 30, 2011 Broadcasting License Impairment Testing [Member]	Jun. 30, 2010 Broadcasting License Impairment Testing [Member]	Jun. 30, 2009 Broadcasting License Impairment Testing [Member]	Jun. 30, 2012 Broadcasting License Impairment Testing [Member] Maximum	Jun. 30, 2011 Broadcasting License Impairment Testing [Member] Maximum	Jun. 30, 2010 Broadcasting License Impairment Testing [Member] Maximum	Jun. 30, 2009 Broadcasting License Impairment Testing [Member] Maximum	Jun. 30, 2012 Broadcasting License Impairment Testing [Member] Minimum	Jun. 30, 2011 Broadcasting License Impairment Testing [Member] Minimum	Jun. 30, 2010 Broadcasting License Impairment Testing [Member] Minimum	Jun. 30, 2009 Broadcasting License Impairment Testing [Member] Minimum	Jun. 30, 2012 Goodwill Impairment Testing [Member]	Jun. 30, 2011 Goodwill Impairment Testing [Member]	Jun. 30, 2010 Goodwill Impairment Testing [Member]	Jun. 30, 2009 Goodwill Impairment Testing [Member]	Jun. 30, 2012 Goodwill Impairment Testing [Member] Maximum	Jun. 30, 2011 Goodwill Impairment Testing [Member] Maximum	Jun. 30, 2010 Goodwill Impairment Testing [Member] Maximum	Jun. 30, 2009 Goodwill Impairment Testing [Member] Maximum	Jun. 30, 2012 Goodwill Impairment Testing [Member] Minimum	Jun. 30, 2011 Goodwill Impairment Testing [Member] Minimum	Jun. 30, 2010 Goodwill Impairment Testing [Member] Minimum	Jun. 30, 2009 Goodwill Impairment Testing [Member] Minimum	Dec. 31, 2012 Goodwill Impairment Testing [Member] Minimum	Dec. 31, 2012 Radio Broadcasting Licences [Member]	Dec. 31, 2011 Radio Broadcasting Licences [Member]
Changes in broadcasting licenses [Line Items]
Beginning of period balance																												$ 715,902	$ 707,852
Impairment loss	(22,307)																											(22,307)	0
Acquisition																												25,061	8,050
Ending period balance																												718,656	715,902
Estimates and assumptions used for impairment test [Line Items]
Discount rates			10.00%	10.00%	10.00%	10.60%									10.00%	10.00%	10.00%	10.60%
Operating profit margin ranges of the markets of the Company							40.90%	41.50%	42.50%	44.00%	20.70%	19.50%	21.00%	21.00%
Long-term revenue growth rate ranges of the markets of the Company							2.00%	2.00%	2.00%	2.50%	1.50%	1.50%	1.50%	1.00%					2.00%	2.00%	2.00%	2.50%	1.50%	1.50%	1.50%	1.00%
Market approach for step one goodwill analysis [Abstract]
Income model years used for the discounted cash flow approach	10
Estimates of market multiples																		6.0	8.0	8.0	8.0			7.5	7.5		7.5
Reporting units with goodwill balances	19
Reporting units with no goodwill balances	4
Changes in goodwill [Roll Forward]
Goodwill before cumulative loss on impairment	164,506	163,783
Accumulated loss on impairment	(125,615)	(125,615)
Beginning balance after cumulative loss on impairment	38,891	38,168
Loss on impairment during the year	0	0
Acquisition	212	723
Ending balance	$ 39,103	$ 38,891