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TRADE ACCOUNTS RECEIVABLE (Tables) | 12 Months Ended
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Dec. 30, 2018
Subclassifications of assets, liabilities and equities [abstract] |
Schedule of trade accounts receivable | TRADE ACCOUNTS RECEIVABLE:
| December 30, 2018 |  |  | December 31, 2017 |
Trade accounts receivable | $ | 324,706 |  |  | $ | 248,419 |
Allowance for expected credit losses | (7,547 | ) |  | (5,054 | )
| $ | 317,159 |  |  | $ | 243,365 |
The movement in the allowance for expected credit losses in respect of trade receivables was as follows:
| December 30, 2018 |  |  | December 31, 2017 |
Balance, beginning of fiscal year | $ | (5,054 | ) |  | $ | (5,589 | )
Adjustment relating to adoption of new accounting standard (note 2(d)) | (791 | ) |  | — |
Adjusted balance, beginning of fiscal year | (5,845 | ) |  | (5,589 | )
Bad debt expense | (3,634 | ) |  | (3,689 | )
Write-off of trade accounts receivable | 1,932 |  |  | 4,224 |
Balance, end of fiscal year | $ | (7,547 | ) |  | $ | (5,054 | )

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