PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Property, Plant And Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 879,074	$ 1,428,902
Less: accumulated depreciation	45,061	926,700
Property, plant and equipment, net	834,013	502,202
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	379,204	427,501
Towers, transmitters and studio equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	154,426	365,991
Furniture and other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	309,201	591,601
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 36,243	$ 43,809