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v3.19.1

Segment information - Summary of Operating Segments (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Information about profit and loss |  |  |
Revenue | $ 459,016 | $ 391,406 |
Production costs | 267,980 | 192,740 |
Inventory write-down | 1,465 | 444 |
Depreciation | 105,732 | 72,130 |
Earnings from mine operations | 83,839 | 126,092 |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 46,697 |
Impairment of property, plant, and equipment | 447,808 | 0 |
Exploration and evaluation expenses | 33,842 | 38,261 |
Income tax expense (recovery) | (86,498) | 19,383 |
Additions to property, plant and equipment during the period | 328,153 | 310,238 |
Capitalised interest | 36,750 | 36,750 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 3,988,476 | 4,227,397 | $ 3,645,827
Goodwill | 92,591 | 92,591 |
Information about assets and liabilities | 4,081,067 | 4,319,988 |
Debt | 595,977 | 593,783 |
Turkey [member] |  |  |
Information about profit and loss |  |  |
Revenue | 348,528 | 337,907 |
Production costs | 174,081 | 145,573 |
Inventory write-down | 0 | 0 |
Depreciation | 75,854 | 71,389 |
Earnings from mine operations | 98,593 | 120,945 |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 29,619 |
Impairment of property, plant, and equipment | 117,570 |  |
Exploration and evaluation expenses | 840 | 3,203 |
Income tax expense (recovery) | 45,238 | 30,139 |
Additions to property, plant and equipment during the period | 68,737 | 65,013 |
Capitalised interest | 0 | 0 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 721,449 | 835,422 |
Goodwill | 0 | 0 |
Information about assets and liabilities | 721,449 | 835,422 |
Debt | 0 | 0 |
Canada [member] |  |  |
Information about profit and loss |  |  |
Revenue | 0 | 0 |
Production costs | 0 | 0 |
Inventory write-down | 0 | 0 |
Depreciation | 0 | 6 |
Earnings from mine operations | 0 | (6) |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 0 |
Impairment of property, plant, and equipment | 0 |  |
Exploration and evaluation expenses | 103 | 6,616 |
Income tax expense (recovery) | (3,415) | 1,532 |
Additions to property, plant and equipment during the period | 189,867 | 34,575 |
Capitalised interest | 13,160 | 1,245 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 582,895 | 416,795 |
Goodwill | 92,591 | 92,591 |
Information about assets and liabilities | 675,486 | 509,386 |
Debt | 0 | 0 |
Greece [member] |  |  |
Information about profit and loss |  |  |
Revenue | 110,488 | 51,152 |
Production costs | 93,899 | 45,343 |
Inventory write-down | 1,465 | 444 |
Depreciation | 29,424 | 466 |
Earnings from mine operations | (14,300) | 4,899 |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 6,661 |
Impairment of property, plant, and equipment | 330,238 |  |
Exploration and evaluation expenses | 15,947 | 7,512 |
Income tax expense (recovery) | (129,213) | (4,603) |
Additions to property, plant and equipment during the period | 61,716 | 197,788 |
Capitalised interest | 23,590 | 35,505 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 2,063,798 | 2,362,107 |
Goodwill | 0 | 0 |
Information about assets and liabilities | 2,063,798 | 2,362,107 |
Debt | 0 | 0 |
Romania [member] |  |  |
Information about profit and loss |  |  |
Revenue | 0 | 0 |
Production costs | 0 | 0 |
Inventory write-down | 0 | 0 |
Depreciation | 0 | 0 |
Earnings from mine operations | 0 | 0 |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 10,454 |
Impairment of property, plant, and equipment | 0 |  |
Exploration and evaluation expenses | 13,499 | 10,168 |
Income tax expense (recovery) | (2,716) | (8,026) |
Additions to property, plant and equipment during the period | 419 | 2,006 |
Capitalised interest | 0 | 0 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 416,197 | 415,856 |
Goodwill | 0 | 0 |
Information about assets and liabilities | 416,197 | 415,856 |
Debt | 0 | 0 |
Brazil [member] |  |  |
Information about profit and loss |  |  |
Revenue | 0 | 2,347 |
Production costs | 0 | 1,824 |
Inventory write-down | 0 | 0 |
Depreciation | 0 | 0 |
Earnings from mine operations | 0 | 523 |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | (79) |
Impairment of property, plant, and equipment | 0 |  |
Exploration and evaluation expenses | 1,728 | 4,733 |
Income tax expense (recovery) | 3,608 | (1,087) |
Additions to property, plant and equipment during the period | 6,612 | 10,029 |
Capitalised interest | 0 | 0 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 203,075 | 196,467 |
Goodwill | 0 | 0 |
Information about assets and liabilities | 203,075 | 196,467 |
Debt | 0 | 0 |
Other [member] |  |  |
Information about profit and loss |  |  |
Revenue | 0 | 0 |
Production costs | 0 | 0 |
Inventory write-down | 0 | 0 |
Depreciation | 454 | 269 |
Earnings from mine operations | (454) | (269) |
Other material items of income and expense |  |  |
Other write-down (write-up) of assets |  | 42 |
Impairment of property, plant, and equipment | 0 |  |
Exploration and evaluation expenses | 1,725 | 6,029 |
Income tax expense (recovery) | 0 | 1,428 |
Additions to property, plant and equipment during the period | 802 | 827 |
Capitalised interest | 0 | 0 |
Information about assets and liabilities |  |  |
Property, plant and equipment | 1,062 | 750 |
Goodwill | 0 | 0 |
Information about assets and liabilities | 1,062 | 750 |
Debt | $ 595,977 | $ 593,783 |

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