ACQUISITIONS AND DISPOSITIONS OF ASSETS - Schedule of Assets and Liabilities Held For Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Non-current liabilities	$ 4,083	$ 0
Government Approval Disposal For Tribune Media Acquisition
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Current assets	411
Property and equipment	5,052
Definite-lived intangible assets	127
Assets held for sale	5,590
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Current liabilities	1,167
Non-current liabilities	2,916
Liabilities held for sale	$ 4,083

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