XML 45 R37.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Subsequent Events (Details) (Subsequent Event [Member], Senior credit facility [Member], USD $) | 0 Months Ended
--- | ---
Jul. 23, 2013 bbl
Subsequent Event [Line Items] |
Maturity date of debt | Jul. 30, 2017
Barrels per day permitted to hedge (per day) | 600
Reasonable percentage of projected production (in hundredths) | 85.00%
Borrowing base | $ 25,000,000
Minimum [Member] |
Subsequent Event [Line Items] |
Applicable margin rate for Eurodollar Loan (in hundredths) | 2.00%
Applicable margin rate for Alternate Base Rate Loans (in hundredths) | 1.00%
Maximum [Member] |
Subsequent Event [Line Items] |
Applicable margin rate for Eurodollar Loan (in hundredths) | 3.00%
Applicable margin rate for Alternate Base Rate Loans (in hundredths) | 2.00%

X
- Definition The percentage points added to the reference rate to compute the variable rate on the debt instrument related to Alternate Base Rate Loans. + References No definition available. + Details
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Namespace Prefix: | useg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The percentage points added to the reference rate to compute the variable rate on the debt instrument related to Eurodollar Loan. + References No definition available. + Details
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Period Type: | instant

X
- Definition The volume per day the company is permitted to hedge related to the amendment of senior secured revolving credit facility. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition The reasonable percentage of the projected production that the company is permitted to hedge related to the amendment of senior secured revolving credit facility. + References No definition available. + Details
Name: | useg_ReasonablePercentageOfProjectedProduction
Namespace Prefix: | useg_
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Period Type: | duration

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Details
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