Note 8 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill	$ 485,318
Goodwill	86,390
Goodwill
Goodwill	571,708
Broadcast licenses	1,340,305
Broadcast licenses	1,492,379
Finite-lived intangible assets	56,250
Finite-lived intangible assets	20,101
Finite-lived intangible assets	(5,567)	$ (3,888)
Finite-lived intangible assets	70,784
Total intangible assets net of accumulated amortization	1,881,873
Total intangible assets net of accumulated amortization	258,565
Total intangible assets net of accumulated amortization
Total intangible assets net of accumulated amortization	2,134,871
Broadcast Licenses [Member]
Broadcast licenses	1,340,305
Broadcast licenses	152,074
Broadcast licenses
Broadcast licenses	$ 1,492,379