INCOME TAXES: (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net operating and capital losses:
Federal	$ 2,384,000	$ 5,027,000
State	67,430,000	63,051,000
Broadcast licenses	11,993,000	27,652,000
Intangibles	32,182,000	3,451,000
Other	27,677,000	35,677,000
Deferred tax assets, Gross	141,666,000	134,858,000
Valuation allowance for deferred tax assets	(58,896,000)	(51,062,000)	59,400,000	79,100,000
Total deferred tax assets	82,770,000	83,796,000
Current and Long-Term Deferred Tax Liabilities:
Broadcast licenses	(36,083,000)	(20,395,000)
Intangibles	(507,545,000)	(270,008,000)
Property & equipment, net	(72,819,000)	(52,514,000)
Contingent interest obligations	(40,941,000)	(51,621,000)
Other	(34,314,000)	(2,037,000)
Total deferred tax liabilities	(691,702,000)	(396,575,000)
Net tax liabilities	(608,932,000)	(312,779,000)
Valuation allowance
Increase (decrease) in valuation allowance	7,800,000	(8,300,000)	(19,700,000)
Unrecognized tax benefits
Gross unrecognized tax benefits	7,138,000	16,883,000	25,965,000	26,088,000
Unrecognized tax benefits that would favorably affect entity's effective tax rates from continuing operations, if recognized	$ 6,400,000	$ 15,600,000