XML 73 R54.htm IDEA: XBRL DOCUMENT
v3.3.1.900

DISCONTINUED OPERATIONS (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Operating results for apartment complex: |  |  |
Rental revenue |  |  | $ 1,271
Operating expenses |  |  | (844)
Net earnings for apartment complex |  |  | 427
Operating expenses of mining segment: |  |  |
Water treatment plant | $ (1,737) | $ (1,875) | (1,817)
Mine property holding costs | (1,134) | (1,110) | (1,228)
Depreciation of mine equipment | (122) | (123) | (126)
Total expenses for mining segment | (2,993) | (3,108) | (3,171)
Total results for discontinued operations | $ (2,993) | $ (3,108) | $ (2,744)

X
- References No definition available. + Details
Name: | us-gaap_ResultsOfOperationsExpenseFromOilAndGasProducingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Income before income taxes for oil and gas producing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447 + Details
Name: | us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Sales revenue to unaffiliated enterprises from oil and gas producing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62246-109447 + Details
Name: | us-gaap_ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the Mine property holding costs. + References No definition available. + Details
Name: | useg_MinePropertyHoldingCosts
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | useg_OperatingResultsForApartmentComplexAbstract
Namespace Prefix: | useg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Depreciation, depletion and amortization, and valuation provisions (impairments) related to oil and gas producing activities. + References No definition available. + Details
Name: | useg_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions1
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expenses related to oil and gas producing activities. + References No definition available. + Details
Name: | useg_ResultsOfOperationsExpenseFromOilAndGasProducingActivities1
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the rental revenue. + References No definition available. + Details
Name: | useg_ResultsOfOperationsRentalRevenue
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total revenues from oil and gas producing activities. + References No definition available. + Details
Name: | useg_ResultsOfOperationsRevenueFromOilAndGasProducingActivities1
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Refers to water treatment plant cost during the period. + References No definition available. + Details
Name: | useg_WaterTreatmentPlantCost
Namespace Prefix: | useg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration