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FINANCIAL INSTRUMENTS (Additional Information) (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($) shares
Disclosure of detailed information about hedged items [line items] |
Net gains in AOCI expected to be reclassified to inventory or net earnings within the next twelve months | $ 3,100,000
Total Return Swap |
Disclosure of detailed information about hedged items [line items] |
Term of TRS | 1 year
Notional amount (in shares) | shares | 284,761
Cash flow hedges |
Disclosure of detailed information about hedged items [line items] |
Ineffectiveness recognized in net earnings | $ 0

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