Intangible Assets (Gross Carrying Amount and Accumulated Amortization) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Impairment charges	$ (4,509)
Finite-Lived Intangible Assets, Accumulated Amortization Activity [Roll Forward]
Accumulated Amortization, beginning balance	(42,450)
Amortization Expense	(14,806)
Assets held for sale (see Note 1)	14
Dispositions	45
Accumulated amortization, ending balance	(57,197)
Intangible Assets Activity [Roll Forward]
Beginning balance	1,037,323
Assets held for sale (see Note 1)	(306)
Dispositions	(100)
Ending balance	1,032,408
Net Book Value	975,211
FCC licenses
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	830,490
Impairment charges	(4,509)
Assets held for sale (see Note 1)	(263)
Dispositions	(52)
Ending balance	825,666
Net Book Value	825,666
Trademarks
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	19,921
Assets held for sale (see Note 1)	(16)
Dispositions	(2)
Ending balance	19,903
Net Book Value	19,903
Affiliate and producer relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	130,000
Ending balance	130,000
Finite-Lived Intangible Assets, Accumulated Amortization Activity [Roll Forward]
Accumulated Amortization, beginning balance	(18,712)
Amortization Expense	(8,864)
Accumulated amortization, ending balance	(27,576)
Net Book Value	102,424
Broadcast advertising
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	32,000
Ending balance	32,000
Finite-Lived Intangible Assets, Accumulated Amortization Activity [Roll Forward]
Accumulated Amortization, beginning balance	(10,133)
Amortization Expense	(4,800)
Accumulated amortization, ending balance	(14,933)
Net Book Value	17,067
Tower income contracts
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	13,721
Assets held for sale (see Note 1)	(16)
Dispositions	(1)
Ending balance	13,704
Finite-Lived Intangible Assets, Accumulated Amortization Activity [Roll Forward]
Accumulated Amortization, beginning balance	(2,414)
Amortization Expense	(1,142)
Assets held for sale (see Note 1)	3
Accumulated amortization, ending balance	(3,553)
Net Book Value	10,151
Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	11,191
Assets held for sale (see Note 1)	(11)
Dispositions	(45)
Ending balance	11,135
Finite-Lived Intangible Assets, Accumulated Amortization Activity [Roll Forward]
Accumulated Amortization, beginning balance	(11,191)
Amortization Expense	0
Assets held for sale (see Note 1)	11
Dispositions	45
Accumulated amortization, ending balance	(11,135)
Net Book Value	$ 0