Note 14 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	May 01, 2019	Dec. 31, 2018	Dec. 30, 2018
Revenue (less agency commissions)	$ 508,000	$ 250,000	$ 1,026,000	$ 477,000
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			783,000	311,000
Depreciation and amortization			97,000	38,000
(Gain) loss on disposal of assets, net	3,000	1,000	13,000	2,000
Operating expenses	389,000	170,000	867,000	347,000
Operating income	119,000	80,000	159,000	130,000
Interest expense	58,000	25,000	116,000	49,000
Capital expenditures (excluding business combinations)			44,000	20,000
Goodwill	1,452,000		1,452,000		$ 839,000	$ 612,000	$ 612,000
Total Assets	7,001,000		7,001,000			4,213,000
Corporate, Non-Segment [Member]
Revenue (less agency commissions)			0	0
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			69,000	19,000
Depreciation and amortization			1,000	1,000
(Gain) loss on disposal of assets, net			(0)	(0)
Operating expenses			70,000	20,000
Operating income			(70,000)	(20,000)
Interest expense			116,000	49,000
Capital expenditures (excluding business combinations)			5,000	0
Goodwill	0		0			0
Total Assets	365,000		365,000			971,000
Broadcasting, Segment [Member]
Revenue (less agency commissions)	499,000	250,000	980,000	477,000
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			670,000	292,000
Depreciation and amortization			90,000	37,000
(Gain) loss on disposal of assets, net			13,000	2,000
Operating expenses			747,000	327,000
Operating income			233,000	150,000
Interest expense			0	0
Capital expenditures (excluding business combinations)			39,000	20,000
Goodwill	1,412,000		1,412,000			612,000
Total Assets	6,505,000		6,505,000			3,242,000
Production Companies, Segment [Member]
Revenue (less agency commissions)	9,000	$ 0	46,000	0
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			44,000	0
Depreciation and amortization			6,000	0
(Gain) loss on disposal of assets, net			(0)	(0)
Operating expenses			50,000	0
Operating income			(4,000)	0
Interest expense			0	0
Capital expenditures (excluding business combinations)			0	$ 0
Goodwill	40,000		40,000			0
Total Assets	$ 131,000		$ 131,000			$ 0