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SUPPLEMENTAL FINANCIAL INFORMATION | 3 Months Ended
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Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Financial Information | SUPPLEMENTAL FINANCIAL INFORMATION The components of other income are as follows:
| Three months ended March 31,
| 2020 |  | 2019
Interest income | $ | 72 |  |  | $ | 111 |
Change in value of investments accounted for at fair value | (391 | ) |  | 375 |
Change in value of warrant liabilities | 1,146 |  |  | (732 | )
Change in value of Convertible Debentures | 465 |  |  | (1,436 | )
Foreign exchange gain | 1,236 |  |  | — |
Other | (36 | ) |  | (1 | )
Other income (loss) | $ | 2,492 |  |  | $ | (1,683 | )

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