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LONG-TERM DEBT - PPP Loan (Details) - PPP loan $ in Millions | Jun. 01, 2021 USD ($)
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Debt Instrument [Line Items] |
Proceeds from PPP Loan | $ 7.5
Fixed interest rate per year | 1.00%

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- Definition Represents the information pertaining to fixed rate of interest. + References No definition available. + Details
Name: | uone_FixedRateOfInterest
Namespace Prefix: | uone_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash inflow from Paycheck Protection Program Loan. + References No definition available. + Details
Name: | uone_ProceedsFromPaycheckProtectionProgramLoan
Namespace Prefix: | uone_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=uone_PaycheckProtectionProgramLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |