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BASIS OF PREPARATION BASIS OF PREPARATION (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
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Dec. 30, 2018 | Jan. 01, 2018
Disclosure of initial application of standards or interpretations [line items] |  |
Impact of initial application of new IFRS on retained earnings |  | $ (791)
IFRS 15 [Member] |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Impact of initial application of new IFRS on retained earnings |  | (700)
Impact of initial application of new IFRS on gross margin on net sales |  | (2,100)
Impact of initial application of new IFRS on revenue | $ (500) |
Impact of initial application of new IFRS on gross profit | (200) |
Impact of initial application of new IFRS on operating income | (200) |
Impact of initial application of new IFRS on net earnings | $ (200) |
IFRS 9 [Member] |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Impact of initial application of new IFRS on retained earnings |  | $ (800)

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