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SUPPLEMENTAL FINANCIAL INFORMATION | 3 Months Ended
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Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Financial Information | SUPPLEMENTAL FINANCIAL INFORMATION The components of revenues are as follows:
| Three months ended March 31,
| 2017 |  | 2016
Uranium concentrates | $ | 3,497 |  |  | $ | 17,978 |
Alternate feed materials processing and other | 259 |  |  | 18 |
Revenues | $ | 3,756 |  |  | $ | 17,996 |
The components of other income (expense) are as follows:
| Three months ended March 31,
| 2017 |  | 2016
Interest income | $ | 29 |  |  | $ | 20 |
Change in value of investments accounted at fair value | 499 |  |  | 69 |
Change in value of warrant liabilities | (2,193 | ) |  | 253 |
Change in value of convertible debentures | (922 | ) |  | (561 | )
Sale of surplus assets | 793 |  |  | — |
Other | (123 | ) |  | 307 |
Other income (expense) | $ | (1,917 | ) |  | $ | 88 |

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