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Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Income Statement [Abstract] |  |  |  |
Revenue (Note 10) | $ 8,702 | $ 19,159 | $ 33,704 | $ 50,464
Costs and expenses applicable to revenue | 4,341 | 11,786 | 20,583 | 29,012
Impairment of inventories (Note 3) | 1,379 | 0 | 2,998 | 0
Development, permitting and land holding | 6,252 | 3,934 | 17,138 | 4,636
Standby costs | 647 | 1,015 | 4,178 | 4,335
Abandonment of mineral properties | 1,005 | 0 | 1,036 | 0
Impairment of assets held for sale | 0 | 2,000 | 0 | 2,000
Accretion of asset retirement obligation | 175 | 143 | 526 | 350
Selling costs | 47 | 40 | 216 | 199
Intangible asset amortization | 583 | 1,772 | 3,021 | 3,572
General and administration | 3,815 | 3,887 | 11,928 | 9,223
Costs directly attributable to acquisitions | 0 | 190 | 0 | 6,777
Total operating loss | (9,542) | (5,608) | (27,920) | (9,640)
Interest expense | (573) | (625) | (1,734) | (1,391)
Other income (Note 10) | 1,870 | 838 | 2,103 | 373
Net loss | (8,245) | (5,395) | (27,551) | (10,658)
Items that may be reclassified in the future to profit and loss |  |  |  |
Foreign currency translation adjustment | (701) | 846 | (1,175) | 2,364
Unrealized gain on available-for-sale assets | 135 | 201 | 252 | 119
Other comprehensive income (loss) | (566) | 1,047 | (923) | 2,483
Comprehensive loss | (8,811) | (4,348) | (28,474) | (8,175)
Net loss attributable to: |  |  |  |
Owners of the Company | (8,076) | (5,344) | (27,292) | (10,607)
Non-controlling interests | (169) | (51) | (259) | (51)
Net loss | (8,245) | (5,395) | (27,551) | (10,658)
Comprehensive loss attributable to: |  |  |  |
Owners of the Company | (8,642) | (4,297) | (28,215) | (8,124)
Non-controlling interests | (169) | (51) | (259) | (51)
Comprehensive loss | $ (8,811) | $ (4,348) | $ (28,474) | $ (8,175)
Basic and diluted loss per share (Note 8) (in USD per share) | $ (0.14) | $ (0.12) | $ (0.51) | $ (0.36)

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