EMPLOYMENT AGREEMENT AWARD (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Reassessed Estimated Fair Value of Award	$ 23.0	$ 25.7
Corporate selling, general and administrative \| Employment agreement award
Income (expense) associated with the Employment Agreement Award	$ 0.2	$ 1.6

Represents the reassessed estimated fair value of award amount adjusted liability.

No definition available.

Name:	uone_ReassessedEstimatedFairValueOfAward
Namespace Prefix:	uone_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant