Note 10 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Amortization	$ (104,505)	$ (88,379)
Net	1,340,305	1,114,626
Gross	583,914	521,832	$ 472,986
Net	485,318	423,236	374,390
Gross	1,986,378	1,679,521
Net	1,881,873	1,591,142	1,445,772
Other finite-lived intangible assets	1,881,873	1,591,142
Network Affiliate [Member]
Accumulated Amortization	(1,264)	(1,264)
Gross	1,264	1,264
Other Intangible Assets [Member]
Accumulated Amortization	(49,542)	(33,416)
Gross	105,792	86,696
Other finite-lived intangible assets	56,250	53,280
Intangible Assets Subject to Amortization [Member]
Accumulated Amortization	(50,806)	(34,680)
Gross	107,056	87,960
Other finite-lived intangible assets	56,250	53,280
Broadcast Licenses [Member]
Gross	1,394,004	1,168,325
Accumulated Amortization	(53,699)	(53,699)
Net	1,340,305	1,114,626	$ 1,023,580
Goodwill Not Amortizable [Member]
Gross	485,318	423,236
Net	485,318	423,236
Intangible Assets Not Subject to Amortization [Member]
Accumulated Amortization	(53,699)	(53,699)
Gross	1,879,322	1,591,561
Net	$ 1,825,623	$ 1,537,862