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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURMENTS (Schedule of Recurring Fair Value Measurements) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Marketable securities held for sale | $ 113,168 |
Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cross currency swap- asset position | 16,455 |
Cross currency swap liability position |  | $ (67)
Marketable securities held for sale | 113,168 |
Foreign exchange forward and cylinders - liability position | (169) | (976)
Foreign exchange forward and cylinders - asset position | 24 |
Total assets and liabilities | 129,478 | (1,043)
Recurring [Member] | Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cross currency swap- asset position |  |
Cross currency swap liability position |  |
Marketable securities held for sale | 113,168 |
Foreign exchange forward and cylinders - liability position |  |
Foreign exchange forward and cylinders - asset position |  |
Total assets and liabilities | 113,168 |
Recurring [Member] | Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cross currency swap- asset position | 16,455 |
Cross currency swap liability position |  | (67)
Marketable securities held for sale |  |
Foreign exchange forward and cylinders - liability position | (169) | (976)
Foreign exchange forward and cylinders - asset position | 24 |
Total assets and liabilities | 16,310 | (1,043)
Recurring [Member] | Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cross currency swap- asset position |  |
Cross currency swap liability position |  |
Marketable securities held for sale |  |
Foreign exchange forward and cylinders - liability position |  |
Foreign exchange forward and cylinders - asset position |  |
Total assets and liabilities |  |

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