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Income Taxes (Details Narrative) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Uncertain tax positions |  |
Federal [Member] |  |
Net operating loss carryovers | 4,200 |
Recognized Built-In Losses [Member] |  |
Net operating loss carryovers | $ 4,400 |

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- Definition Uncertain tax positions. + References No definition available. + Details
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Namespace Prefix: | USEG_
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |