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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2016
INCOME TAXES. |
Schedule of deferred income tax recovery (expense) |
|  | 2016 |  | 2015 |  | 2014
United States |  | $ | 515 |  | $ | (442) |  | $ | 215
Foreign |  |  | 3,234 |  |  | 25,002 |  |  | 106,955
Deferred tax benefit |  | $ | 3,749 |  | $ | 24,560 |  | $ | 107,170
Schedule of net income (loss) before tax |
|  | 2016 |  | 2015 |  | 2014
United States |  | $ | (13,959) |  | $ | (19,935) |  | $ | (21,436)
Foreign |  |  | 31,265 |  |  | (25,075) |  |  | (397,677)
Net income (loss) before tax |  | $ | 17,306 |  | $ | (45,010) |  | $ | (419,113)
Schedule of reconciliation of the tax provision at statutory U.S. Federal and State income tax rates to the actual tax provision recorded in the financial statement |
Expected tax benefit at |  | 2016 |  | 2015 |  | 2014
Income (loss) before income taxes |  | $ | 17,306 |  | $ | (45,010) |  |  | (419,113)
Statutory tax rate |  |  | 34% |  |  | 34% |  |  | 34%
US Federal and State tax benefit at statutory rate |  |  | 5,884 |  |  | (15,303) |  | $ | (142,498)
Reconciling items: |  |  |  |  |  |  |  |  |
Equity pickup in MSC |  |  | (4,533) |  |  | (821) |  |  | 1,850
Impairment of MSC |  |  | — |  |  | 4,004 |  |  | 7,407
Revisions to prior year estimates |  |  | (828) |  |  | 906 |  |  | 8,330
Adjustment for foreign tax rates |  |  | (501) |  |  | (1,230) |  |  | (1,803)
Other permanent differences |  |  | 818 |  |  | (15,694) |  |  | (14,760)
Unrealized foreign exchange rate (loss)/gain |  |  | 5,972 |  |  | 9,389 |  |  | 19,444
NOL expired |  |  | 586 |  |  | 1,215 |  |  | 10,268
Valuation allowance |  |  | (11,147) |  |  | (7,026) |  |  | 4,592
Tax benefit |  |  | (3,749) |  |  | (24,560) |  | $ | (107,170)
Schedule of tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities |
|  | 2016 |  | 2015 |
Deferred tax assets: |  |  |  |  |  |  |
Net operating loss carryforward |  |  | 96,312 |  |  | 105,555 |
Mineral Properties |  |  | 14,195 |  |  | 11,842 |
Other temporary differences |  |  | 1,114 |  |  | 5,371 |
Total gross deferred tax assets |  |  | 111,621 |  |  | 122,768 |
Less: valuation allowance |  |  | (111,621) |  |  | (122,768) |
Net deferred tax assets |  | $ | — |  | $ | — |
Deferred tax liabilities: |  |  |  |  |  |  |
Acquired mineral property interests |  |  | (23,655) |  |  | (26,899) |
Total deferred tax liabilities |  | $ | (23,655) |  | $ | (26,899) |
Total net deferred tax liability |  | $ | (23,655) |  | $ | (26,899) |
Summary of changes in valuation allowance |
For the year ended December 31, |  | Balance at beginning of period |  | Additions(a) |  | Deductions(b) |  | Balance at end of period
2016 |  | $ | 122,768 |  | $ | 1,430 |  | $ | (12,577) |  | $ | 111,621
2015 |  |  | 129,794 |  |  | 6,873 |  |  | (13,899) |  |  | 122,768
2014 |  |  | 125,202 |  |  | 11,514 |  |  | (6,922) |  |  | 129,794
| (a) |  | The additions to valuation allowance mainly results from the Company and its subsidiaries incurring losses and exploration expenses for tax purposes which do not meet the more-likely-than-not criterion for recognition of deferred tax assets.
| (b) |  | The reductions to valuation allowance mainly results from expiration of the Company's tax attributes and foreign exchange reductions of tax attributes in Mexico and Argentina.
Summary of company’s non operating losses that can be applied against future taxable profit |
Country |  | Type of Loss |  | Amount |  | Expiry Period
United States(a) |  | Non-operating losses |  | $ | 160,900 |  | 2017-2036
Mexico |  | Non-operating losses |  |  | 31,810 |  | 2017-2026
Canada |  | Non-operating losses |  |  | 19,055 |  | 2017-2036
Argentina |  | Non-operating losses |  |  | 79,807 |  | 2017-2021
| (a) |  | The losses in the United States and Argentina are part of multiple consolidating groups, and therefore, may be restricted in use to specific projects.

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