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v3.8.0.1

Note 1 - Segment Information (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Statement Line Items [Line Items] |  |  |
Profit (loss) before tax | $ 427,711 | $ 34,430 | $ 140,829
Non-current financial assets available-for-sale | $ 21,572 | 21,572 | 21,600
LUXEMBOURG |  |  |
Statement Line Items [Line Items] |  |  |
Percentage of entity's revenue | 0.00% |  |
UNITED STATES |  |  |
Statement Line Items [Line Items] |  |  |
Percentage of entity's revenue | 31.80% |  |
ARGENTINA |  |  |
Statement Line Items [Line Items] |  |  |
Percentage of entity's revenue | 14.00% |  |
Elimination of intersegment amounts [member] |  |  |
Statement Line Items [Line Items] |  |  |
Profit (loss) before tax | $ 53,000 | $ 47,000 | $ 57,000

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