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OTHER NON-CURRENT LIABILITIES (Tables) | 12 Months Ended
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Dec. 30, 2018
Subclassifications of assets, liabilities and equities [abstract] |
Other noncurrent liabilities | OTHER NON-CURRENT LIABILITIES:
| December 30, 2018 |  |  | December 31, 2017 |
Employee benefit obligation - Statutory severance and pre-notice | $ | 22,075 |  |  | $ | 16,096 |
Employee benefit obligation - Defined contribution plan | 3,498 |  |  | 3,216 |
Provisions | 14,343 |  |  | 17,829 |
| $ | 39,916 |  |  | $ | 37,141 |
Disclosure of net defined benefit liability | Statutory severance and pre-notice obligations:
| December 30, 2018 |  |  | December 31, 2017 |
Obligation, beginning of fiscal year | $ | 16,096 |  |  | $ | 14,579 |
Service cost | 13,500 |  |  | 12,424 |
Interest cost | 6,478 |  |  | 6,171 |
Actuarial loss(1) | 1,694 |  |  | 64 |
Foreign exchange gain | (537 | ) |  | (389 | )
Benefits paid | (15,156 | ) |  | (16,753 | )
Obligation, end of fiscal year | $ | 22,075 |  |  | $ | 16,096 |
(1) The actuarial loss is due to changes in the actuarial assumptions used to determine the statutory severance obligations.
Disclosure of other provisions | Provisions:
| Decommissioning |  |  |  |
| and site |  | Lease exit |  |  |
| restoration costs |  | costs |  |  | Total |
Balance, December 31, 2017 |  | $ | 16,572 |  |  | $ | 1,257 |  |  | $ | 17,829 |
Provisions made during the fiscal year |  | — |  |  | 3,509 |  |  | 3,509 |
Changes in estimates made during the fiscal year |  | (2,147 | ) |  | — |  |  | (2,147 | )
Provisions utilized during the fiscal year |  | — |  |  | (147 | ) |  | (147 | )
Accretion of interest |  | 299 |  |  | — |  |  | 299 |
Other(1) (note 17) |  | (5,000 | ) |  | — |  |  | (5,000 | )
Balance, December 30, 2018 |  | $ | 9,724 |  |  | $ | 4,619 |  |  | $ | 14,343 |

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