Area of land held.

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- Definition

Amount of acquirer's equity interest issued and issuable as part of consideration transferred in asset acquisition.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480060/805-50-25-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 30
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480027/805-50-30-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480027/805-50-30-2

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- Definition

The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-13

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- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

+ Details

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- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

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- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in an asset acquisition.

+ References

No definition available.

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- Definition

Amount of consideration transferred in asset acquisition after transaction costs. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

+ References

No definition available.

+ Details

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- Definition

Number of shares of equity interests issued or issuable to acquire assets.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of purchase price adjustment on an asset acquisition.

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Represents the amount of asset retirement obligation incurred.

+ References

No definition available.

+ Details

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Namespace Prefix:	useg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of suspense accounts.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Note 2 - Acquisitions (Details Textual)				9 Months Ended
Note 2 - Acquisitions (Details Textual)	Jul. 27, 2022 USD ($) a	May 03, 2022 USD ($) a	Jan. 05, 2022 USD ($) shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Repayments of Debt				$ 500,000	$ 6,047,000
Asset Retirement Obligation Assumed				$ 2,504,000	$ 11,889,000
Lubbock Acquisition [Member]
Payments to Acquire Productive Assets			$ 125,000
Asset Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares			6,568,828
Banner Acquisition [Member]
Payments to Acquire Productive Assets			$ 1,000,000
Asset Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares			6,790,524
Banner Acquisition [Member] \| Long-Term Debt [Member]
Asset Acquisition, Consideration Transferred, Liabilities Incurred			$ 3,300,000
Banner Acquisition [Member] \| Derivative Financial Instruments, Liabilities [Member]
Asset Acquisition, Consideration Transferred, Liabilities Incurred			3,100,000
Synergy Acquisition [Member]
Payments to Acquire Productive Assets			$ 125,000
Asset Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares			6,546,384
January 2022 Acquisition [Member]
Payments to Acquire Productive Assets			$ 1,250,000
Asset Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares			19,905,736
Asset Acquisition, Consideration Transferred, Net			$ 66,400,000
Asset Acquisition, Consideration Transferred, Equity Interest Issued and Issuable			64,694,000
Asset Acquisition, Purchase Price Adjustment			487,000
Repayments of Debt			3,347,000
Asset Retirement Obligation Assumed			9,614,000
January 2022 Acquisition [Member] \| Derivative Financial Instruments, Liabilities [Member]
Asset Acquisition, Consideration Transferred, Liabilities Incurred			$ 3,100,000
Liberty County, Texas Acquisition [Member]
Payments to Acquire Oil and Gas Property		$ 1,000,000
Area of Land (Acre) \| a		1,022
Suspense Accounts		$ 200,000
Asset Retirement Obligation Assumed		$ 500,000
East Texas Acquisition [Member]
Payments to Acquire Productive Assets	$ 11,875,000
Asset Acquisition, Purchase Price Adjustment	$ (1,048,000)
Area of Land (Acre) \| a	16,600
Asset Retirement Obligation Assumed	$ 1,689,000