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

Name:	useg_ApplicableMarginRateForAlternateBaseRateLoans
Namespace Prefix:	useg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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

Name:	useg_ApplicableMarginRateForEurodollarLoan
Namespace Prefix:	useg_
Data Type:	num:percentItemType
Balance Type:	na
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

Name:	useg_BarrelsPerDayPermittedToHedge
Namespace Prefix:	useg_
Data Type:	num:volumeItemType
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_
Data Type:	num:percentItemType
Balance Type:	na
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

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- 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

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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