Note 3 - Acquisitions and Divestitures - Assets Sold from the Raycom Merger (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 02, 2019	Jun. 30, 2019	Jun. 30, 2018
Proceeds from sale of television station		$ 231,000	$ 0
WTNZ-TV, WFXG-TV, WPGX-TV, and WDFX-TV [Member] | Lockwood Broadcasting, Inc. [Member]
Proceeds from sale of television station	$ 67,000
KXXV-TV, KRHD-CD, and WTXL-TV [Member] | Scripps Media, Inc. [Member]
Proceeds from sale of television station	55,000
WTOL-TV and KWES-TV [Member] | TEGNA, Inc. [Member]
Proceeds from sale of television station	109,000
WTNZ-TV, WFXG-TV, WPGX-TV, WDFX-TV, KXXV-TV, KRHD-CD, WTXL-TV, WTOL-TV and KWES-TV [Member]
Proceeds from sale of television station	$ 231,000