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SCHEDULE OF STOCK OPTIONS ACTIVITY (Details) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
Equity [Abstract]
Stock options outstanding and exercisable, shares	30,285	31,035
Stock options outstanding and exercisable, price	$ 60.11	$ 62.79

X

- Definition

Stock options outstanding and exercisable, shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	USEG_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Stock options outstanding and exercisable, price.

+ References

No definition available.

+ Details

Name:	USEG_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAndExercisableWeightedAverageExercisePrice
Namespace Prefix:	USEG_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration