Goodwill and Intangible Assets - Other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Changes in other amortizable intangible assets
Balance at the beginning of the period	$ 61,499	$ 74,925
Additions	94	65
Amortization	(13,430)	(13,491)	$ (12,700)
Net balance at the end of the period	48,163	61,499	74,925
Future estimated amortization expense
2017				$ 13,281
2018				13,205
2019				8,455
2020				6,032
2021 and thereafter				7,190
Total	$ 61,499	74,925	74,925	48,163
Weighted Average
Changes in other amortizable intangible assets
Remaining amortization period	4 years 2 months 12 days
Affiliate relationships
Changes in other amortizable intangible assets
Balance at the beginning of the period	$ 56,766	69,064
Amortization	(12,298)	(12,298)
Net balance at the end of the period	44,468	56,766	69,064
Future estimated amortization expense
Total	56,766	69,064	69,064	44,468
Advertiser relationships
Changes in other amortizable intangible assets
Balance at the beginning of the period	2,344	2,896
Amortization	(552)	(552)
Net balance at the end of the period	1,792	2,344	2,896
Future estimated amortization expense
Total	2,344	2,896	2,896	1,792
Non-compete agreement
Changes in other amortizable intangible assets
Balance at the beginning of the period	2,333	2,882
Amortization	(549)	(549)
Net balance at the end of the period	1,784	2,333	2,882
Future estimated amortization expense
Total	2,333	2,882	2,882	1,784
Other intangibles
Changes in other amortizable intangible assets
Balance at the beginning of the period	56	83
Additions	94	65
Amortization	(31)	(92)
Net balance at the end of the period	119	56	83
Future estimated amortization expense
Total	$ 56	$ 83	$ 83	$ 119