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FINANCE INCOME AND EXPENSES (Tables) | 12 Months Ended
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Dec. 31, 2017
Analysis of income and expense [abstract] |
Disclosure of interest income and other finance income | Interest earned and other finance income
Years ended December 31 | 2017 |  | 2016 |
| $ |  | $ |
Interest earned | 4,132 |  | 1,670 |
Accretion income on deferred consideration | 1,998 |  | 96 |
Total interest earned and other finance income | 6,130 |  | 1,766 |
Disclosure of interest expense and other finance expenses | Interest expense and other finance expenses
Years ended December 31 | 2017 |  | 2016 |
| $ |  | $ |
Interest expense on convertible notes (note 14) | (7,619 | ) | (7,619 | )
Accretion expense on convertible notes (note 14) | (13,147 | ) | (11,969 | )
Accretion of close down and restoration provision (note 13) | (3,380 | ) | (3,624 | )
Interest expense on bank loan | — |  | (513 | )
Interest on moratorium | (7,616 | ) | — |
Other finance expenses | (3,108 | ) | (2,243 | )
Total interest expense and other finance expenses | (34,870 | ) | (25,968 | )

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