Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Total revenue	$ 29,035	$ 33,159
Affiliate fees
Revenues
Total revenue	$ 18,433	19,453
Revenue, remaining performance obligation, expected timing of satisfaction, period	60 days
Advertising revenue
Revenues
Total revenue	$ 9,918	13,567
Revenue, remaining performance obligation, expected timing of satisfaction, period	30 days
Other
Revenues
Total revenue	$ 684	$ 139