ACQUISITIONS AND DISPOSITION OF ASSETS (Narrative) (Details) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2017 USD ($) station market $ / shares shares	Apr. 30, 2017 USD ($) station market	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2017 USD ($) station market	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) station market	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Mar. 07, 2017 USD ($)
Business Acquisition [Line Items]
Acquisition related costs									$ 200
Net revenues					$ 36,500	$ 27,500	$ 69,300	$ 35,100
Operating income (loss)					(2,000)	(9,700)	5,200	(11,100)
Gains of sale of broadcast assets					$ 150	$ 11	$ 53,497	$ 2,671
Number of television stations owned | station					173		173
Number of markets | market					81		81
Tennis Media Company
Business Acquisition [Line Items]
Business combination purchase price			$ 23,000
Earn-out potential					$ 6,000		$ 6,000
Working capital adjustment									2,800
Tennis Channel
Business Acquisition [Line Items]
Business combination purchase price				$ 350,000
Working capital adjustment				9,200
Tennis Channel | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired				$ 272,700
Acquired finite-lived intangible assets, weighted average useful life				15 years
Television Station Acquisitions
Business Acquisition [Line Items]
Business combination purchase price									72,000
Working capital adjustment									100
Bonten
Business Acquisition [Line Items]
Business combination purchase price		$ 240,000
Number of television stations owned | station		14
Number of markets | market		8
Number of stations to which sales services were provided | station		4
Tribune Media Company
Business Acquisition [Line Items]
Business combination purchase price	$ 3,900,000
Number of television stations owned | station	42
Number of markets | market	33
Share price of acquisition | $ / shares	$ 43.50
Assumption of debt from acquisition	$ 2,700,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Disposals in 2016
Business Acquisition [Line Items]
Carrying value of broadcast assets exchanged									23,800
Gains of sale of broadcast assets									$ 4,400
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Alarm Funding Associates
Business Acquisition [Line Items]
Sale price of assets sold										$ 200,000
Working capital and transaction costs										$ 5,000
Gain on sale of consolidated non-media business					53,000
Gain on sale attributable to non-controlling interest					$ 12,300
FOX | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	14
CW | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	12
CBS | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	6
ABC | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	3
NBC | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	2
MyNetworkTV | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	3
Independent Station | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station	2
Tribune Media Company, Stockholders | Tribune Media Company
Business Acquisition [Line Items]
Cash stockholders will receive (in dollars per share) | $ / shares	$ 35.00
Tribune Media Company, Stockholders | Class A Common Stock | Tribune Media Company
Business Acquisition [Line Items]
Number of shares to be received for a share of acquired stock (in shares) | shares	0.23