NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entities
Net broadcast revenues	$ 1,217,504,000	$ 920,593,000	$ 648,002,000
Station production expenses	385,104,000	255,556,000	178,612,000
Income from equity and cost method investments	621,000	9,670,000	3,269,000
VIEs which are not primary beneficiary
Variable Interest Entities
Carrying amount	26,700,000	31,000,000
Income from equity and cost method investments	2,100,000	6,400,000	2,800,000
Freedom
Variable Interest Entities
Net broadcast revenues		10,000,000
Station production expenses		7,800,000
Four Points and Freedom LMAs
Variable Interest Entities
Net broadcast revenues			10,800,000
Station production expenses			$ 7,700,000