ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Launch assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Launch assets	$ 7,259	$ 7,259
Less: Accumulated amortization	(2,038)	(1,011)
Launch assets, net	$ 5,221	$ 6,248

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