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TRADE ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Jan. 01, 2017
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Disclosure Of Trade Receivables [Line Items] |  |
Trade accounts receivable | $ 243,365 | $ 277,733
Gross carrying amount |  |
Disclosure Of Trade Receivables [Line Items] |  |
Trade accounts receivable | 248,419 | 283,322
Allowance for doubtful accounts |  |
Disclosure Of Trade Receivables [Line Items] |  |
Trade accounts receivable | $ (5,054) | $ (5,589)

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