Note 3 - Acquisitions and Divestitures - Consideration (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 02, 2019	Jun. 30, 2019	May 01, 2019
Purchase consideration for assets acquired and liabilities assumed net of divestitures			$ 3,491,000
Raycom, Excluding KYOU and WUPV [Member]
Purchase Price		$ 3,660,000
Less - consideration allocated to all assets acquired and net of liabilites assumed for the Raycom overlap market stations which were also divested on January 2, 2019		(234,000)
Purchase consideration for assets acquired and liabilities assumed net of divestitures		3,426,000
KYOU-TV and WUPV-TV [Member]
Purchase Price		17,000
Less - consideration allocated to all assets acquired and net of liabilites assumed for the Raycom overlap market stations which were also divested on January 2, 2019		0
Purchase consideration for assets acquired and liabilities assumed net of divestitures		17,000
Raycom [Member]
Purchase Price	$ 3,660,000	3,677,000
Less - consideration allocated to all assets acquired and net of liabilites assumed for the Raycom overlap market stations which were also divested on January 2, 2019		(234,000)
Purchase consideration for assets acquired and liabilities assumed net of divestitures	$ 3,443,000	$ 3,443,000