XML 36 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

SEGMENTS AND MAJOR CUSTOMERS (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2013 Segment | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Segment Reporting Information, Results of operations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  |  |  | $ 33,647 | $ 32,534 | $ 30,958
Total operating expenses |  |  |  |  |  |  |  |  |  |  |  |  | 32,965 | 33,769 | 27,913
Total interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 276 | 193 | 304
Operating income (loss) from identified segments | 692 | 359 | 118 | (6,160) | (5,880) | (2,709) | (991) | (712) | (736) | (689) | (723) | (3,068) | (4,991) | (10,344) | (5,216)
General and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  | (5,673) | (9,109) | (8,261)
Add back Interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 276 | 193 | 304
Other revenues and expenses: |  |  |  |  |  |  |  |  |  |  |  |  | (2,695) | 849 | (717)
Loss before income taxes and discontinued operations | (1,217) | (706) | 367 | (6,130) | (6,079) | (3,155) | 624 | (833) | (2,443) | 1,022 | 420 | (4,932) | (7,686) | (9,495) | (5,933)
Depreciation depletion and amortization expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation, depletion and amortization expense |  |  |  |  |  |  |  |  |  |  |  |  | 13,898 | 15,457 | 14,593
Assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets | 126,801 |  |  |  | 140,827 |  |  |  | 162,439 |  |  |  | 126,801 | 140,827 | 162,439
Oil and Gas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Results of operations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  |  |  | 33,647 | 32,534 | 30,958
Total operating expenses |  |  |  |  |  |  |  |  |  |  |  |  | 29,920 | 30,870 | 25,549
Total interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 264 | 169 | 268
Operating income (loss) from identified segments |  |  |  |  |  |  |  |  |  |  |  |  | 3,463 | 1,495 | 5,141
Add back Interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 264 | 169 | 268
Depreciation depletion and amortization expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation, depletion and amortization expense |  |  |  |  |  |  |  |  |  |  |  |  | 13,623 | 14,893 | 13,997
Assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets | 97,418 |  |  |  | 93,839 |  |  |  | 109,141 |  |  |  | 97,418 | 93,839 | 109,141
Mineral properties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Results of operations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating expenses |  |  |  |  |  |  |  |  |  |  |  |  | 3,045 | 2,899 | 2,364
Total interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 12 | 24 | 36
Operating income (loss) from identified segments |  |  |  |  |  |  |  |  |  |  |  |  | (3,057) | (2,923) | (2,400)
Add back Interest expenses |  |  |  |  |  |  |  |  |  |  |  |  | 12 | 24 | 36
Depreciation depletion and amortization expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation, depletion and amortization expense |  |  |  |  |  |  |  |  |  |  |  |  | 126 | 127 | 102
Assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets | 20,739 |  |  |  | 20,747 |  |  |  | 20,755 |  |  |  | 20,739 | 20,747 | 20,755
Corporate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation depletion and amortization expense [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation, depletion and amortization expense |  |  |  |  |  |  |  |  |  |  |  |  | 149 | 437 | 494
Assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets | 8,644 |  |  |  | 26,241 |  |  |  | 32,543 |  |  |  | 8,644 | 26,241 | 32,543
Reportable Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Results of operations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) from identified segments |  |  |  |  |  |  |  |  |  |  |  |  | $ 406 | $ (1,428) | $ 2,741

X
- Definition Other generally recurring costs associated with normal operations excluding those directly related to the marketing or selling of products and services, and the impairment of aircraft. + References No definition available. + Details
Name: | useg_OtherSellingGeneralAndAdministrativeExpenseWithAircraftImpairment
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | useg_SegmentReportingInformationAssetsAbstract
Namespace Prefix: | useg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -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 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 -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_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DepreciationAndAmortizationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of operating interest income (expense). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 10 -Article 9 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. + References No definition available. + Details
Name: | us-gaap_OperatingCostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationProfitLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration