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TRADE ACCOUNTS RECEIVABLE (Allowance for doubtful accounts) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
Changes in allowance account for credit losses of financial assets [abstract] |  |  |  |  |
Adjustments relating to initial adoption of new accounting standards (note 2(c)) |  |  | $ (2,176) | $ (1,515) |
Allowance for doubtful accounts |  |  |  |  |
Changes in allowance account for credit losses of financial assets [abstract] |  |  |  |  |
Balance, beginning of fiscal year | $ (7,547) | $ (5,054) |  |  |
Adjusted balance, beginning of fiscal year |  |  |  |  | $ (5,845)
Impairment of trade accounts receivable | (27,652) | (3,634) |  |  |
Write-off of trade accounts receivable | 28,015 | 1,932 |  |  |
Balance, end of fiscal year | $ (7,184) | $ (7,547) |  |  |
IFRS 9 |  |  |  |  |
Changes in allowance account for credit losses of financial assets [abstract] |  |  |  |  |
Adjustments relating to initial adoption of new accounting standards (note 2(c)) |  |  |  | $ (791) |

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Data Type: | xbrli:monetaryItemType
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- Definition Impact Of Initial Application Of New IFRS On Retained Earnings + References No definition available. + Details
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- Definition Increase (Decrease) Through Impairment Loss Recognised In Profit Or Loss, Allowance Account For Credit Losses Of Financial Assets + References No definition available. + Details
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- Definition Increase (Decrease) Through Recovery (Expense) Recognized During Period For Bad And Doubtful Debts, Allowance Account For Credit Losses Of Financial Assets + References No definition available. + Details
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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Details
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- Details
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