ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Launch assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Launch assets	$ 9,021	$ 9,021
Less: Accumulated amortization	(4,724)	(3,124)
Launch assets, net	$ 4,297	$ 5,897

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