Represents the aggregate principal amount which eligible holders had validly tendered and not validly withdrawn.

No definition available.

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

- Definition

Represents the cash to be received per $1,000 principal amount of Existing Notes.

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of eligible holders subject to customary conditions.

+ References

No definition available.

+ Details

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Namespace Prefix:	uone_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of outstanding principal amount which eligible holders had validly tendered and not validly withdrawn.

+ References

No definition available.

+ Details

Name:	uone_DebtInstrumentPercentageOfOutstandingPrincipalAmountWhichEligibleHoldersHadValidlyTenderedAndNotValidlyWithdrawn
Namespace Prefix:	uone_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the principal amount of New Notes to be received in exchange of existing notes.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=uone_SevenPointThreeSevenFiveSeniorSecuredNotesDueAprilTwoThousandTwentyTwoMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=uone_EightPointSevenFiveSeniorSecuredNotesDueTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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- Details

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SUBSEQUENT EVENTS (Details) - Subsequent events - USD ($)	Nov. 09, 2020	Oct. 19, 2020	Oct. 16, 2020
Subsequent Event [Line Items]
Aggregate principal amount of New Notes	$ 347,016,000
7.375% Senior Secured Notes due April 2022
Subsequent Event [Line Items]
Aggregate principal amount which eligible holders had validly tendered and not validly withdrawn		$ 347,000,000
Represents the percentage of outstanding principal amount which eligible holders had validly tendered and not validly withdrawn.		99.15%
8.75% Senior Secured Notes due 2022
Subsequent Event [Line Items]
Minimum percentage of eligible holders subject to customary conditions			90.00%
8.75% Senior Secured Notes due 2022 \| Validly tender before early tender date
Subsequent Event [Line Items]
Principal amount of New Notes to be received in exchange of existing notes			$ 1,000,000
Cash to be received per $1,000 principal amount of Existing Notes			10,000
8.75% Senior Secured Notes due 2022 \| Validly tender after early tender date but before expiration date
Subsequent Event [Line Items]
Principal amount of New Notes to be received in exchange of existing notes			1,000,000
Cash to be received per $1,000 principal amount of Existing Notes			$ 5,000