ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Launch support amortization expense (Details) $ in Thousands	Dec. 31, 2021 USD ($)
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
2022	$ 1,424
2023	1,424
2024	936
2025	358
2026	$ 155

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for launch assets.

No definition available.

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Amount of amortization expense expected to be recognized during the five fiscal year following the latest fiscal year for launch assets.

No definition available.

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Amount of amortization expense expected to be recognized during the four fiscal year following the latest fiscal year for launch assets.

No definition available.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for launch assets.

No definition available.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for launch assets.

No definition available.

Name:	uone_LaunchAssetsAmortizationExpenseYearTwo
Namespace Prefix:	uone_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

No definition available.

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