ACQUISITIONS AND DISPOSITION OF ASSETS (Narrative) (Details) $ / shares in Units, $ in Thousands		1 Months Ended				3 Months Ended		12 Months Ended
	Mar. 07, 2017 USD ($)	May 31, 2017 USD ($) station market $ / shares shares	Apr. 30, 2017 USD ($) station market	Mar. 31, 2017 USD ($) station market	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($) station market	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Acquisition related costs								$ 200
Net revenues						$ 31,900	$ 7,600
Operating income (loss)						7,200	1,500
Gains of sale of broadcast assets						$ 53,347	$ 2,660
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				$ 8,000
Earn-out potential				$ 6,000		$ 6,000
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
Forecast | 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
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Disposals in 2016 [Member]
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
Subsequent Event | 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
Subsequent Event | FOX | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		14
Subsequent Event | CW | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		12
Subsequent Event | CBS | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		6
Subsequent Event | ABC | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		3
Subsequent Event | NBC | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		2
Subsequent Event | MyNetworkTV | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		3
Subsequent Event | Independent Station | Tribune Media Company
Business Acquisition [Line Items]
Number of television stations owned | station		2
Tribune Media Company, Stockholders | Subsequent Event | 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 | Subsequent Event | Tribune Media Company
Business Acquisition [Line Items]
Number of shares to be received for a share of acquired stock (in shares) | shares		0.23