COMMITMENTS AND CONTINGENCIES: (Details) (USD $)	3 Months Ended			9 Months Ended			0 Months Ended		1 Months Ended			1 Months Ended		0 Months Ended	1 Months Ended			1 Months Ended
	Sep. 30, 2014	Mar. 31, 2014 item	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Aug. 01, 2014 Allbritton	Jul. 31, 2014 Allbritton station	Aug. 31, 2014 Allbritton WCIV [Member]	Sep. 30, 2014 Allbritton WCFT and WJSU [Member] item	Sep. 30, 2014 Pending acquisition agreement New Age Media	Sep. 30, 2013 Pending acquisition agreement New Age Media Scenario forecast market station	Nov. 01, 2014 Pending acquisition agreement New Age Media Scenario forecast	Nov. 01, 2014 Pending acquisition agreement New Age Media Scenario forecast Subsequent Event market station	Aug. 31, 2014 Pending acquisition agreement Media General, Inc. Scenario forecast item station	Aug. 31, 2014 Pending acquisition agreement LIN Media, LLC Scenario forecast station	Aug. 31, 2014 Pending acquisition agreement WTGS Television, LLC Scenario forecast station	Sep. 30, 2014 Pending acquisition agreement KSNV in Las Vegas Scenario forecast station
COMMITMENTS AND CONTINGENCIES
Percentage of sale as per joint sales agreements to become owner of station		15.00%
Minimum number of waivers		1
Period to amend or terminate current ownership of station to fall in new rule, as per FCC, for ownership of station		2 years
Revenue earned from JSAs arrangements, which are eliminated in consolidation	$ 11,700,000		$ 8,500,000	$ 33,800,000	$ 23,600,000
Sale of license and related assets				83,200,000	27,992,000				50,000	50,000
Number of agreements										2					3
Purchase price													207,500,000
Working capital adjustment							52,100,000							100,000
Restricted cash	104,330,000			104,330,000		11,747,000					21,000,000
Number of television stations owned								9				8		8	1	2	1
Cash paid							$ 985,000,000
Number of television stations to be sold																		1
Number of television stations, which use for multicast capabilities																		2
Number of markets												3		3