Goodwill and Intangible Assets - Other Amortizable Intangible (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Changes in other amortizable intangible assets
Net balance at the beginning of the period	$ 22,400	$ 34,975
Additions	2,746	681
Amortization	(9,245)	(13,256)
Net balance at the end of the period	15,901	22,400
Future estimated amortization expense
2020			$ 6,767
2021			6,425
2022			1,766
2023			328
2024 and thereafter			615
Total	$ 15,901	22,400	15,901
Weighted Average
Changes in other amortizable intangible assets
Remaining amortization period	2 years 7 months 6 days
Affiliate relationships
Changes in other amortizable intangible assets
Net balance at the beginning of the period	$ 20,273	32,343
Additions	1,668
Amortization	(7,589)	(12,070)
Net balance at the end of the period	14,352	20,273
Future estimated amortization expense
Total	14,352	20,273	14,352
Advertiser relationships
Changes in other amortizable intangible assets
Net balance at the beginning of the period	690	1,240
Amortization	(552)	(550)
Net balance at the end of the period	138	690
Future estimated amortization expense
Total	138	690	138
Non-compete value
Changes in other amortizable intangible assets
Net balance at the beginning of the period	686	1,235
Additions	1,078
Amortization	(938)	(549)
Net balance at the end of the period	826	686
Future estimated amortization expense
Total	826	686	826
Other intangibles
Changes in other amortizable intangible assets
Net balance at the beginning of the period	144	157
Additions		65
Amortization	(76)	(78)
Net balance at the end of the period	68	144
Future estimated amortization expense
Total	68	144	68
Programming contracts
Changes in other amortizable intangible assets
Net balance at the beginning of the period	607
Additions		616
Amortization	(90)	(9)
Net balance at the end of the period	517	607
Future estimated amortization expense
Total	$ 517	$ 607	$ 517