SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Launch assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Launch assets	$ 27,764	$ 9,021
Less: accumulated amortization	(9,104)	(4,724)
Launch assets, net	$ 18,660	$ 4,297

Accumulated amount of amortization of launch assets.

No definition available.

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