Note 12 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2019	May 01, 2019	Dec. 31, 2018	Dec. 30, 2018
Goodwill, Gross	$ 1,551,000			$ 711,000
Goodwill	1,452,000	$ 839,000	$ 612,000	$ 612,000
Other intangible assets, net	497,000		53,000
Intangible Assets Gross (Including Goodwill)	5,714,000		2,344,000
Accumulated Amortization Intangible Assets	(207,000)		(149,000)
Intangible Assets, Net (Including Goodwill)	5,507,000		2,195,000
Network Affiliate [Member]
Finite-Lived Intangible Assets, Gross	54,000		6,000
Finite-Lived Intangible Assets, Accumulated Amortization	(11,000)		(6,000)
Other intangible assets, net	43,000		0
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Gross	596,000		143,000
Finite-Lived Intangible Assets, Accumulated Amortization	(142,000)		(90,000)
Other intangible assets, net	454,000		53,000
Intangible Assets Subject to Amortization [Member]
Finite-Lived Intangible Assets, Gross	650,000		149,000
Finite-Lived Intangible Assets, Accumulated Amortization	(153,000)		(96,000)
Other intangible assets, net	497,000		53,000
Broadcast Licenses [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill), Gross	3,612,000		1,583,000
Indefinite-Lived Intangible Assets (Excluding Goodwill), Accumulated Amortization	(54,000)		(53,000)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	3,558,000		1,530,000
Goodwill Not Amortizable [Member]
Goodwill, Gross	1,452,000		612,000
Goodwill, Accumulated Amortization	0		0
Goodwill	1,452,000		612,000
Intangible Assets Not Subject to Amortization [Member]
Goodwill and Indefinite-Lived Intangible Assets, Gross	5,064,000		2,195,000
Goodwill and Indefinite-lived Intangible Assets, Accumulated Amortization	(54,000)		(53,000)
Goodwill and Indefinite-Lived Assets, Net	$ 5,010,000		$ 2,142,000