Note 8 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Broadcast Licenses [Member]
Gross	$ 1,394,004	$ 1,168,325
Accumulated Amortization	(53,699)	(53,699)
Net	1,340,305	1,114,626
Goodwill Not Amortizable [Member]
Gross	485,605	423,236
Net	485,605	423,236
Intangible Assets Not Subject to Amortization [Member]
Accumulated Amortization	(53,699)	(53,699)
Gross	1,879,609	1,591,561
Net	1,825,910	1,537,862
Network Affiliate [Member]
Accumulated Amortization	(1,264)	(1,264)
Gross	1,264	1,264
Other Intangible Assets [Member]
Accumulated Amortization	(45,310)	(33,416)
Gross	105,791	86,696
Other definite lived intangible assets	60,481	53,280
Intangible Assets Subject to Amortization [Member]
Accumulated Amortization	(46,574)	(34,680)
Gross	107,055	87,960
Other definite lived intangible assets	60,481	53,280
Accumulated Amortization	(100,273)	(88,379)
Net	1,340,305	1,114,626
Net	485,605	423,236
Gross	1,986,664	1,679,521
Net	1,886,391	1,591,142
Other definite lived intangible assets	$ 1,886,391	$ 1,591,142