CONTENT ASSETS - Additional Information (Details) $ in Millions	Dec. 31, 2019 USD ($)
CONTENT ASSETS
Percentage of Unamortized Value In Content Assets For Next Three Years	80.00%
Produced Content Assets Unamortized Value For Next Three Years	$ 13.0
Percentage Expected To Be Amortized Within Three Years	41.50%

Percentage of amortization expense expected to be recognized during next three years.

No definition available.

Name:	uone_PercentageOfUnamortizedValueInContentAssetsForNextThreeYears
Namespace Prefix:	uone_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant