Note 11 - Subsequent Events - Preliminary Assets Acquired, Liabilities Assumed, and Goodwill from 2017 Acquisitions (Details) - USD ($) $ in Thousands	Aug. 01, 2017	Jun. 30, 2017	Dec. 31, 2016
Goodwill		$ 610,494	$ 485,318
Subsequent Event [Member] \| Burlington and Plattsburg Acquisition [Member]
Property and equipment	$ 10,500
Goodwill	750
Broadcast licenses	14,250
Other intangible assets	3,500
Total	$ 29,000

Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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