Note 10 - Intangible Assets and Related Accumulated Amortization (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Broadcast Licenses [Member]
Gross	$ 1,168,325,000	$ 1,077,279,000
Accumulated Amortization	(53,699,000)	(53,699,000)
Broadcast licenses	1,114,626,000	1,023,580,000
Goodwill Not Amortizable [Member]
Goodwill, gross	423,236,000	374,390,000
Goodwill	423,236,000	374,390,000
Intangible Assets Not Subject to Amortization [Member]
Accumulated Amortization	(53,699,000)	(53,699,000)
Gross	1,591,561,000	1,451,669,000
Total intangible assets net of accumulated amortization	1,537,862,000	1,397,970,000
Network Affiliate [Member]
Accumulated Amortization	(1,264,000)	(1,264,000)
Gross	1,264,000	1,264,000
Other Intangible Assets [Member]
Accumulated Amortization	(33,416,000)	(21,479,000)
Gross	86,696,000	69,281,000
Total intangible assets net of accumulated amortization	53,280,000	47,802,000
Intangible Assets Subject to Amortization [Member]
Accumulated Amortization	(34,680,000)	(22,743,000)
Gross	87,960,000	70,545,000
Total intangible assets net of accumulated amortization	53,280,000	47,802,000
Accumulated Amortization	(88,379,000)	(76,442,000)
Broadcast licenses	1,114,626,000	1,023,580,000
Goodwill, gross	521,832,000	472,986,000
Goodwill	423,236,000	374,390,000
Gross	1,679,521,000	1,522,214,000
Total intangible assets net of accumulated amortization	$ 1,591,142,000	$ 1,445,772,000