XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.5.0.2

SUPPLEMENTAL FINANCIAL INFORMATION (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedules of Components of Revenues | The components of revenues are as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Uranium concentrates | $ | 8,687 |  |  | $ | 19,159 |  |  | $ | 33,664 |  |  | $ | 49,795 |
Alternate feed materials processing and other | 15 |  |  | — |  |  | 40 |  |  | 669 |
Revenues | $ | 8,702 |  |  | $ | 19,159 |  |  | $ | 33,704 |  |  | $ | 50,464 |
Schedule of Other Nonoperating Income (Expense) | The components of other income (expense) are as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Interest income | $ | 36 |  |  | $ | 21 |  |  | $ | 76 |  |  | $ | 60 |
Change in value of investments accounted at fair value | — |  |  | 150 |  |  | — |  |  | 112 |
Change in value of warrant liabilities | 1,178 |  |  | 712 |  |  | 1,879 |  |  | 712 |
Change in value of convertible debentures | 323 |  |  | 18 |  |  | (666 | ) |  | (890 | )
Other | 333 |  |  | (63 | ) |  | 814 |  |  | 379 |
Other income (expense) | $ | 1,870 |  |  | $ | 838 |  |  | $ | 2,103 |  |  | $ | 373 |

X
- Definition Schedules of Components of Revenues + References No definition available. + Details
Name: | efr_SchedulesOfComponentsOfRevenuesTableTextBlock
Namespace Prefix: | efr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration