NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Nature of Operations (Narrative) (Details)	Jun. 30, 2017 channel station market
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of television stations owned \| station	173
Number of markets \| market	81
Number of channels \| channel	528

Represent the number of markets in which broadcasting and media stations are operated.

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