ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) $ in Thousands	Dec. 31, 2017 USD ($)
Future Estimated Launch Support Amortization Expense [Line Items]
2018	$ 422
2019	422
2020	422
2021	422
2022	$ 422

No definition available.

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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.

Name:	uone_LaunchAssetsAmortizationExpenseYearFour
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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
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant