SEGMENT DATA Revenue by Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting [Abstract]
Television advertising	$ 111,796	$ 89,053
Carriage fees and subscriptions	23,297	18,886
Other	4,089	3,793
Total net revenues	$ 139,182	$ 111,732