CONTENT ASSETS - Content Amortization (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
Content amortization - acquired	$ 3,979	$ 3,357
Content amortization - produced	5,903	8,087
Total content amortization	$ 9,882	$ 11,444

The noncash amortization expense, charged against earnings in the period to allocate the cost of content assets over their remaining economic lives

No definition available.

Name:	uone_AmortizationOfContentAssets
Namespace Prefix:	uone_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration