XML 52 R30.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Discontinued Operations (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract] |
Schedule of Impairment Charge | Presented below is calculation of the impairment charge:
Net book value of assets conveyed |  | $ | 22,824 |
Asset retirement obligations assumed by Purchaser |  |  | (204 | )
Impairment charge recognized in 2015 |  | $ | 22,620 |
Schedule of Assets and Liabilities Associated with the Mining Segment |
|  |  | 2017 |  |  | 2016 |
Assets retained by the Company: |  |  |  |  |  |  |  |  |
Performance bonds |  |  | $ | 114 |  |  | $ | 114 |
Net assets conveyed to Purchaser: |  |  |  |  |  |  |  |  |
Undeveloped mining claims |  |  |  | - |  |  |  | - |
Mining equipment |  |  |  | - |  |  |  | - |
Less accumulated depreciation of mining equipment |  |  |  | - |  |  |  | - |
Less write-down due to impairment |  |  |  | - |  |  |  | - |
Net book value of assets conveyed |  |  |  | - |  |  |  | - |
Total assets of discontinued operations |  |  | $ | 114 |  |  | $ | 114 |
Asset retirement obligations assumed by Purchaser |  |  | $ | - |  |  |  |  |
Schedule of Components of Discontinued Operations | . Presented below are the components for the years ended December 31, 2017, 2016 and 2015:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Operating results for apartment complex: |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  | $ | - |  |  | $ | - |  |  | $ | - |
Operating expenses |  |  | - |  |  |  | - |  |  |  | - |
Net earnings for apartment complex |  |  | - |  |  |  | - |  |  |  | - |
Operating expenses of mining segment: |  |  |  |  |  |  |  |  |  |  |  |
Water treatment plant |  |  | - |  |  |  | (254 | ) |  |  | (1,737 | )
Mine property holding costs |  |  | - |  |  |  | (2,194 | ) |  |  | (1,133 | )
Impairment of mining asset |  |  | - |  |  |  | - |  |  |  | (22,620 | )
Depreciation of mine equipment |  |  | - |  |  |  | - |  |  |  | (122 | )
Total expenses for mining segment |  |  | - |  |  |  | (2,448 | ) |  |  | (25,612 | )
Total results for discontinued operations |  | $ | - |  |  | $ | (2,448 | ) |  | $ | (25,612 | )

X
- Definition The tabular disclosure of assets and liabilities associated with the mining segment. + References No definition available. + Details
Name: | USEG_ScheduleOfAssetsAndLiabilitiesAssociatedWithTheMiningSegmentTableTextBlock
Namespace Prefix: | USEG_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tabular disclosure of impairment charges. + References No definition available. + Details
Name: | USEG_ScheduleOfImpairmentChargeTableTextBlock
Namespace Prefix: | USEG_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=84176398&loc=SL51724579-110230 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5D -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760 + Details
Name: | us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration