Goodwill and Other Intangible Assets (Schedule of Finite and Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross	$ 771,323	$ 778,352
Accumulated Amortization	(365,990)	(273,721)
Net	405,333	504,631
Trademarks	19,900	19,900
Total intangible assets, gross	791,223	798,252
Total intangible assets, net	425,233	524,531
Affiliate and customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	611,324	616,197
Accumulated Amortization	(306,696)	(232,193)
Net	304,628	384,004
Advertiser relationships
Finite-Lived Intangible Assets [Line Items]
Gross	46,282	46,282
Accumulated Amortization	(23,924)	(21,820)
Net	$ 22,358	24,462
Estimated useful lives (in years)	11 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	$ 110,918	113,075
Accumulated Amortization	(32,778)	(17,997)
Net	78,140	95,078
Other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross	2,799	2,798
Accumulated Amortization	(2,592)	(1,711)
Net	$ 207	$ 1,087
Minimum | Affiliate and customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	6 years
Minimum | Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	3 years
Minimum | Other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	5 years
Maximum | Affiliate and customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	25 years
Maximum | Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	20 years
Maximum | Other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives (in years)	15 years