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SEGMENT INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | $ 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 |
Accretion of asset retirement obligation | 175 | 143 | 526 | 350 | $ 494
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 |
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) |
Owners of the Company | (8,076) | (5,344) | (27,292) | (10,607) |
Non-controlling interests | (169) | $ (51) | (259) | $ (51) |
Operating Segments | Conventional |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 8,702 |  | 26,704 |  |
Costs and expenses applicable to revenue | 4,341 |  | 16,484 |  |
Impairment of inventories (Note 3) | 0 |  | 0 |  |
Development, permitting and land holding | 2,527 |  | 7,806 |  |
Standby costs | 260 |  | 3,791 |  |
Abandonment of mineral properties | 0 |  | 0 |  |
Accretion of asset retirement obligation | 130 |  | 389 |  |
Selling costs | 47 |  | 216 |  |
Intangible asset amortization | 583 |  | 802 |  |
General and administration | 0 |  | 0 |  |
Total operating loss | 814 |  | (2,784) |  |
Interest Expense | 0 |  | 0 |  |
Other income (Note 10) | 0 |  | 0 |  |
Net loss | 814 |  | (2,784) |  |
Owners of the Company | 814 |  | (2,784) |  |
Non-controlling interests | 0 |  | 0 |  |
Operating Segments | ISR |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 0 |  | 7,000 |  |
Costs and expenses applicable to revenue | 0 |  | 4,099 |  |
Impairment of inventories (Note 3) | 1,379 |  | 2,998 |  |
Development, permitting and land holding | 3,725 |  | 9,332 |  |
Standby costs | 387 |  | 387 |  |
Abandonment of mineral properties | 1,005 |  | 1,036 |  |
Accretion of asset retirement obligation | 45 |  | 137 |  |
Selling costs | 0 |  | 0 |  |
Intangible asset amortization | 0 |  | 2,219 |  |
General and administration | 437 |  | 1,233 |  |
Total operating loss | (6,978) |  | (14,441) |  |
Interest Expense | 0 |  | 0 |  |
Other income (Note 10) | 0 |  | 0 |  |
Net loss | (6,978) |  | (14,441) |  |
Owners of the Company | (6,809) |  | (14,182) |  |
Non-controlling interests | (169) |  | (259) |  |
Corporate & Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 0 |  | 0 |  |
Costs and expenses applicable to revenue | 0 |  | 0 |  |
Impairment of inventories (Note 3) | 0 |  | 0 |  |
Development, permitting and land holding | 0 |  | 0 |  |
Standby costs | 0 |  | 0 |  |
Abandonment of mineral properties | 0 |  | 0 |  |
Accretion of asset retirement obligation | 0 |  | 0 |  |
Selling costs | 0 |  | 0 |  |
Intangible asset amortization | 0 |  | 0 |  |
General and administration | 3,378 |  | 10,695 |  |
Total operating loss | (3,378) |  | (10,695) |  |
Interest Expense | (573) |  | (1,734) |  |
Other income (Note 10) | 1,870 |  | 2,103 |  |
Net loss | (2,081) |  | (10,326) |  |
Owners of the Company | (2,081) |  | (10,326) |  |
Non-controlling interests | $ 0 |  | $ 0 |  |

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