Note 9 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Net	$ 1,522,532	$ 1,340,305
Net	610,494	485,318
Net	2,211,390	1,881,873
Gross	2,328,037	1,986,378
Accumulated Amortization	(116,647)	(104,505)
Net	2,211,390	1,881,873
Network Affiliate [Member]
Net	3,875
Gross	6,216	1,264
Accumulated Amortization	(2,341)	(1,264)
Other Intangible Assets [Member]
Net	74,489	56,250
Gross	135,096	105,792
Accumulated Amortization	(60,607)	(49,542)
Intangible Assets Subject to Amortization [Member]
Net	78,364	56,250
Gross	141,312	107,056
Accumulated Amortization	(62,948)	(50,806)
Broadcast Licenses [Member]
Net	1,522,532	1,340,305
Gross	1,576,231	1,394,004
Accumulated Amortization	(53,699)	(53,699)
Goodwill Not Amortizable [Member]
Gross	610,494	485,318
Net	610,494	485,318
Intangible Assets Not Subject to Amortization [Member]
Gross	2,186,725	1,879,322
Accumulated Amortization	(53,699)	(53,699)
Net	$ 2,133,026	$ 1,825,623