| | | 12-31-2017 | | 12-31-2016 | | ||||
| | | Deductible | | Taxable | | Deductible | | Taxable | |
| Detail of classes of Deferred Tax | | Difference | | Difference | | Difference | | Difference | |
| Temporary Differences | | ThU.S.$ | | ThU.S.$ | | ThU.S.$ | | ThU.S.$ | |
| Deferred Tax Assets | | 124,178 | | | | 106,949 | | | |
| Deferred Tax Assets - Tax loss carryforward | | 62,706 | | | | 50,917 | | | |
| Deferred Tax Liabilities | | | | 1,663,983 | | | | 1,782,834 | |
| Total | | 186,884 | | 1,663,983 | | 157,866 | | 1,782,834 | |
| | | January - December | | ||||
| Detail of Temporary Difference Income | | 2017 | | 2016 | | 2015 | |
| and Loss Amounts | | ThU.S.$ | | ThU.S.$ | | ThU.S.$ | |
| Deferred Tax Assets | | 6,079 | | 9,093 | | (15,306) | |
| Deferred Tax Assets - Tax loss carryforward | | 7,270 | | 11,498 | | (959) | |
| Deferred Tax Liabilities | | 168,279 | | (3,868) | | (26,259) | |
| Total | | 181,628 | | 16,723 | | (42,524) | |