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16. OTHER LIABILITIES (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
DisclosureOfOtherLiabilitiesLineItems [Line Items] |  |
Current other liabilities | $ 3,057 | $ 2,123
Noncurrent other liabilities | 0 | 630
Total other liabilities | 3,057 | 2,753
Debt obligations |  |
DisclosureOfOtherLiabilitiesLineItems [Line Items] |  |
Total other liabilities | 0 | 276
Unamortized fair value of toll milling contracts |  |
DisclosureOfOtherLiabilitiesLineItems [Line Items] |  |
Total other liabilities | 0 | 674
Flow-through share premium obligation |  |
DisclosureOfOtherLiabilitiesLineItems [Line Items] |  |
Total other liabilities | $ 3,057 | $ 1,803

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