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Note 13 - Subsequent Events (Details Textual) $ in Millions | May 01, 2023 USD ($) | Apr. 30, 2023 | Mar. 31, 2023
--- | --- | --- | ---
Number of Television Markets with First and/or Second Rated Stations |  |  | 102
Subsequent Event [Member] |  |  |
Number of Television Markets with First and/or Second Rated Stations | 102 | 101 |
Subsequent Event [Member] | WPGA With Marquee Broadcasting Transaction [Member] |  |  |
Business Combination, Consideration Transferred, Total | $ 6 |  |
KNIN With Marquee Broadcasting Transaction [Member] | Subsequent Event [Member] |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 6 |  |

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