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OPERATING SEGMENTS (Tables) | 12 Months Ended
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Dec. 31, 2018
Operating Segments [Abstract] |
Disclosure of Segment Reporting Information, by Segment | The following is a summary of the reported amounts of income or loss, and the carrying amounts of assets and liabilities by operating segment:
Year ended and at December 31, 2018 | Marigold mine |  | Seabee Gold Operation |  | Puna Operations (1) |  | Exploration, evaluation and development properties |  | Other reconciling items (2) |  | Total |
| $ |  | $ |  | $ |  | $ |  | $ |  | $ |
Revenue | 250,341 |  | 115,655 |  | 54,679 |  | — |  | — |  | 420,675 |
Cost of inventory | (143,380 | ) | (46,054 | ) | (55,677 | ) | — |  | — |  | (245,111 | )
Depletion, depreciation and amortization | (56,748 | ) | (38,818 | ) | (3,153 | ) | — |  | — |  | (98,719 | )
Cost of sales | (200,128 | ) | (84,872 | ) | (58,830 | ) | — |  | — |  | (343,830 | )
Income from mine operations | 50,213 |  | 30,783 |  | (4,151 | ) | — |  | — |  | 76,845 |
Exploration, evaluation and reclamation expenses | (769 | ) | (7,703 | ) | 919 |  | (2,857 | ) | (3,599 | ) | (14,009 | )
Operating income (loss) | 43,399 |  | 20,657 |  | (8,457 | ) | (2,801 | ) | (22,903 | ) | 29,895 |
Income (loss) before income tax | 26,239 |  | 20,204 |  | (9,066 | ) | (2,751 | ) | (26,536 | ) | 8,090 |
Total assets | 478,187 |  | 448,891 |  | 185,298 |  | 71,830 |  | 336,932 |  | 1,521,138 |
Non-current assets | 235,242 |  | 321,802 |  | 121,890 |  | 69,263 |  | 26,498 |  | 774,695 |
Total liabilities | (79,210 | ) | (93,017 | ) | (62,243 | ) | (6,330 | ) | (274,362 | ) | (515,162 | )
Year ended and at December 31, 2017 | Marigold mine |  | Seabee Gold Operation |  | Puna Operations (1) |  | Exploration, evaluation and development properties |  | Other reconciling items (2) |  | Total |
| $ |  | $ |  | $ |  | $ |  | $ |  | $ |
Revenue | 250,825 |  | 108,334 |  | 89,614 |  | — |  | — |  | 448,773 |
Cost of inventory | (129,176 | ) | (51,683 | ) | (62,139 | ) | — |  | — |  | (242,998 | )
Depletion, depreciation and amortization | (54,983 | ) | (40,375 | ) | (7,058 | ) | — |  | — |  | (102,416 | )
Export duties reversal (note 13) | — |  | — |  | 4,303 |  | — |  | — |  | 4,303 |
Restructuring costs (note 18) | — |  | — |  | (109 | ) | — |  | — |  | (109 | )
Inventory (provision) reversal (note 7) | — |  | (632 | ) | 6,342 |  | — |  | — |  | 5,710 |
Cost of sales | (184,159 | ) | (92,690 | ) | (58,661 | ) | — |  | — |  | (335,510 | )
Income from mine operations | 66,666 |  | 15,644 |  | 30,953 |  | — |  | — |  | 113,263 |
Exploration, evaluation and reclamation expenses | (1,875 | ) | (5,050 | ) | (324 | ) | (8,357 | ) | (375 | ) | (15,981 | )
Impairment reversal (note 9) | — |  | — |  | 24,357 |  | — |  | — |  | 24,357 |
Operating income (loss) | 64,935 |  | 10,594 |  | 52,788 |  | (8,360 | ) | (18,625 | ) | 101,332 |
Income (loss) before income tax | 63,959 |  | 10,126 |  | 46,379 |  | (14,840 | ) | (31,037 | ) | 74,587 |
Total assets | 436,815 |  | 418,210 |  | 200,590 |  | 72,825 |  | 409,014 |  | 1,537,454 |
Non-current assets | 222,800 |  | 346,647 |  | 77,112 |  | 71,782 |  | 798 |  | 719,139 |
Total liabilities | (73,526 | ) | (92,050 | ) | (77,850 | ) | (6,496 | ) | (263,604 | ) | (513,526 | )
(1) | Following the formation of the Puna Operations joint venture in 2017, the Pirquitas property was combined with the Chinchillas project into the Puna Operations operating segment and the segment has been amended accordingly. We consolidate Puna Operations which includes non-controlling interest portion of revenues, and income (loss) from mine operations for the year ended December 31, 2018 of $13,077,000 and $(1,243,000), respectively, (2017: $12,361,000 and $4,039,000)
(2) | Other reconciling items refer to items that are not reported as part of segment performance as they are managed on a corporate basis.
Disclosure of Revenue by Product |
Years ended December 31 | 2018 | 2017
| % | %
Gold | 87 | 80
Silver | 12 | 20
Zinc | 1 | —
Lead | — | —
Disclosure of Long-lived Assets by Geographic Areas | Non-current assets by location
| December 31, 2018 |  | December 31, 2017 |
| $ |  | $ |
Canada | 357,783 |  | 348,455 |
United States | 236,054 |  | 224,612 |
Argentina | 113,534 |  | 79,250 |
Mexico | 66,749 |  | 66,131 |
Other | 575 |  | 691 |
Total | 774,695 |  | 719,139 |

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