Note 13 - Subsequent Events - Assets Sold from the Raycom Merger (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 02, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Proceeds from sale of television station		$ 8,500		$ 11,200
Subsequent Event [Member] | WTNZ-TV, WFXG-TV, WPGX-TV, and WDFX-TV [Member] | Lockwood Broadcasting, Inc. [Member]
Proceeds from sale of television station	$ 67,000
Subsequent Event [Member] | KXXV-TV, KRHD-CD, and WTXL-TV [Member] | Scripps Media, Inc. [Member]
Proceeds from sale of television station	55,000
Subsequent Event [Member] | WTOL-TV and KWES-TV [Member] | TEGNA, Inc. [Member]
Proceeds from sale of television station	105,000
Subsequent Event [Member] | 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	$ 227,000