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INCOME TAXES (Significant components of deferred income tax assets and liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Jan. 01, 2017 | Jan. 03, 2016
--- | --- | --- | ---
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Unrecognized deferred tax assets | $ (67,200) | $ (27,500) |
Net deferred tax assets | 0 | 1,500 |
Deferred tax liabilities | (3,713) | 0 |
Deferred income taxes | (3,713) | 1,500 | $ 2,793
Before Offset Amount [Member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Unrecognized deferred tax assets | (67,152) | (27,529) |
Net deferred tax assets | 30,231 | 110,857 |
Deferred tax liabilities | (33,944) | (109,357) |
Deferred income taxes | (3,713) | 1,500 |
Before Offset Amount [Member] | Temporary differences |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 97,383 | 138,386 |
Before Offset Amount [Member] | Non-capital losses |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 75,433 | 76,345 |
Before Offset Amount [Member] | Non-deductible reserves and accruals |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 5,712 | 49,856 |
Before Offset Amount [Member] | Property, plant and equipment |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 9,629 | 7,239 |
Deferred tax liabilities | (24,239) | (32,703) |
Before Offset Amount [Member] | Other |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 6,609 | 4,946 |
Before Offset Amount [Member] | Intangible assets |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax liabilities | $ (9,705) | $ (76,654) |

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