Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Total revenue	$ 37,172	$ 35,846	$ 104,316	$ 110,103
Affiliate revenue
Revenues
Total revenue	$ 19,048	20,993	$ 58,154	63,879
Affiliate revenue | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-30
Revenues
Revenue, remaining performance obligation, expected timing of satisfaction, period	60 days		60 days
Advertising revenue
Revenues
Total revenue	$ 17,556	13,780	$ 41,750	42,625
Advertising revenue | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-30
Revenues
Revenue, remaining performance obligation, expected timing of satisfaction, period	30 days		30 days
Other revenue
Revenues
Total revenue	$ 568	$ 1,073	$ 4,412	$ 3,599