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OPERATING SEGMENT REPORTING (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Operating Segment Reporting |  |  |
Revenues | $ 41,285 | $ 14,833 |
Revision of estimates and accretion of reclamation obligations | (294) | (105) |
Property holding costs | (1,411) | (1,188) |
General and administrative expenses | (5,187) | (4,293) |
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization) | (212) | 190 |
Depreciation | 2,327 | 327 |
Interest and other expense | (134) | (68) |
Reclamation and Remediation | 294 |  | $ 635
Revision of estimates and accretion of reclamation obligations | (294) | (105) |
Gain on sale of assets |  | 11 |
Loss on sale of marketable securities | 734 |  |
Unrealized (loss) gain on derivative instrument | (864) | 1,791 |
(Gain) on disposal of fixed assets |  | 11 |
Foreign currency gain | 927 | 25 |
Net loss before income and mining taxes | (6,349) | (5,674) |
Long-Lived Assets | 508,522 |  | 505,265
Investment in MSC | 145,001 |  | 150,064
Canada |  |  |
Operating Segment Reporting |  |  |
Property holding costs | (43) |  |
General and administrative expenses | (88) |  |
Segment income (loss) | (2,325) |  |
Mexico |  |  |
Operating Segment Reporting |  |  |
Property holding costs | (1,149) | (982) |
General and administrative expenses | (829) | (839) |
Segment income (loss) | 8,480 | 4,334 |
MSC |  |  |
Operating Segment Reporting |  |  |
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization) | (212) | 190 |
Segment income (loss) | (212) | 190 |
Los Azules |  |  |
Operating Segment Reporting |  |  |
Property holding costs | (40) | (1) |
General and administrative expenses | (278) | (208) |
Segment income (loss) | (3,525) | (6,510) |
U.S. |  |  |
Operating Segment Reporting |  |  |
Property holding costs | (179) | (205) |
General and administrative expenses | (863) | (426) |
Segment income (loss) | (3,042) | (2,075) |
Total Segment |  |  |
Operating Segment Reporting |  |  |
Property holding costs | (1,411) | (1,188) |
General and administrative expenses | (2,058) | (1,473) |
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization) | (212) | 190 |
Segment income (loss) | (624) | (4,061) |
Corporate & Other |  |  |
Operating Segment Reporting |  |  |
Revision of estimates and accretion of reclamation obligations | (294) | (105) |
Other exploration costs |  | (120) |
General and administrative expenses | (3,129) | (2,820) |
Depreciation | (360) | (327) |
Interest and other expense | 134 | (68) |
Revision of estimates and accretion of reclamation obligations | (294) | (105) |
Gain on sale of assets |  | 11 |
Loss on sale of marketable securities | (734) |  |
Unrealized fair value loss on marketable equity securities | 1,137 |  |
Unrealized (loss) gain on derivative instrument | (864) | 1,791 |
Foreign currency gain | 927 | 25 |
Canada |  |  |
Operating Segment Reporting |  |  |
Revenues | 15,868 |  |
Long-Lived Assets | 86,187 |  | 85,179
Mexico |  |  |
Operating Segment Reporting |  |  |
Revenues | 25,417 | 14,833 |
Long-Lived Assets | 33,377 |  | 35,446
United States |  |  |
Operating Segment Reporting |  |  |
Long-Lived Assets | 52,467 |  | 43,086
United States | Gold Bar Complex |  |  |
Operating Segment Reporting |  |  |
Construction-in-progress | 8,800 |  | 14,800
Argentina |  |  |
Operating Segment Reporting |  |  |
Long-Lived Assets | 336,491 |  | $ 341,554
Gold and silver sales |  |  |
Operating Segment Reporting |  |  |
Revenues | 41,041 | 14,833 |
Gold and silver sales | Canada |  |  |
Operating Segment Reporting |  |  |
Revenues | 15,624 |  |
Gold and silver sales | Mexico |  |  |
Operating Segment Reporting |  |  |
Revenues | 25,417 | 14,833 |
Gold and silver sales | Total Segment |  |  |
Operating Segment Reporting |  |  |
Revenues | 41,041 | 14,833 |
Other revenue |  |  |
Operating Segment Reporting |  |  |
Revenues | 244 |  |
Other revenue | Canada |  |  |
Operating Segment Reporting |  |  |
Revenues | 244 |  |
Other revenue | Total Segment |  |  |
Operating Segment Reporting |  |  |
Revenues | 244 |  |
Production costs applicable to sales |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 26,394 | 6,984 |
Production costs applicable to sales | Canada |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 12,786 |  |
Production costs applicable to sales | Mexico |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 13,608 | 6,984 |
Production costs applicable to sales | Total Segment |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 26,394 | 6,984 |
Mine development costs |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 380 | 1,115 |
Mine development costs | Mexico |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 380 | 155 |
Mine development costs | U.S. |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold |  | 960 |
Mine development costs | Total Segment |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 380 | 1,115 |
Exploration costs |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 11,454 | 8,444 |
Exploration costs | Canada |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 5,276 |  |
Exploration costs | Mexico |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 971 | 1,539 |
Exploration costs | Los Azules |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 3,207 | 6,301 |
Exploration costs | U.S. |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | 2,000 | 484 |
Exploration costs | Total Segment |  |  |
Operating Segment Reporting |  |  |
Cost of goods and services sold | $ 11,454 | $ 8,324 |

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