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Note 7 - Commodity Derivatives - Schedule of Derivative Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Total derivative settlement gains (losses)	$ 404	$ (406)
Total net commodity derivative gains (losses)	(1,381)	919
Oil Contracts [Member]
Total derivative settlement gains (losses)	404	(378)
Total net commodity derivative gains (losses)	(1,381)	859
Gas Contracts [Member]
Total derivative settlement gains (losses)	0	(28)
Total net commodity derivative gains (losses)	$ 0	$ 60

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

+ Details

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Period Type:	duration

X

- Definition

Represents the amount of gain (loss) on derivative settlements.

+ References

No definition available.

+ Details

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Namespace Prefix:	useg_
Data Type:	xbrli:monetaryItemType
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X

- Details

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Namespace Prefix:
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X

- Details

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