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Note 19 - Deferred Income Tax - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | $ 304,438 |  | $ 406,044
Effect of adoption of new standards |  | 823 |  |
Translation differences |  | 4,171 |  | 783
Charged directly to other comprehensive income |  | 1,898 |  | (1,361)
Income statement charge |  | (113,897) |  | (101,028)
At the end of the year |  | 197,433 |  | 304,438
Effect of adoption of new standards |  | 823 |  |
Deferred tax assets, provisions and allowances [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | (26,475) |  | (33,276)
Translation differences |  | 2,532 |  | (223)
Charged directly to other comprehensive income |  | 23 |  |
Income statement charge |  | 6,852 |  | 7,024
Effect of adoption of new standards |  | 952 |  |
At the end of the year |  | (16,116) |  | (26,475)
Deferred tax assets, inventory [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | (89,555) |  | (94,176)
Translation differences |  | 1,447 |  | (972)
Charged directly to other comprehensive income |  |  |  |
Income statement charge |  | 1,523 |  | 5,593
Effect of adoption of new standards |  |  |  |
At the end of the year |  | (86,585) |  | (89,555)
Deferred tax assets, tax loss [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | (354,944) | [1] | (199,326)
Translation differences |  | 1,014 | [1] | 322
Charged directly to other comprehensive income |  |  | [1] |
Income statement charge |  | (42,327) | [1] | (155,940)
Effect of adoption of new standards | [1] |  |  |
At the end of the year | [1] | (396,257) |  | (354,944)
Deferred tax assets, other [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | (60,033) |  | (81,838)
Translation differences |  | (38) |  | (606)
Charged directly to other comprehensive income |  | 1,587 |  | (778)
Income statement charge |  | (27,536) |  | 23,189
Effect of adoption of new standards |  | (164) |  |
At the end of the year |  | (86,184) |  | (60,033)
Deferred tax assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | (531,007) |  | (408,616)
Translation differences |  | 4,955 |  | (1,479)
Charged directly to other comprehensive income |  | 1,610 |  | (778)
Income statement charge |  | (61,488) |  | (120,134)
Effect of adoption of new standards |  | 788 |  |
At the end of the year |  | (585,142) |  | (531,007)
Deferred tax liabilities, fixed assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year | [2] | 744,926 |  | 625,488
Effect of adoption of new standards | [2] |  |  |
Translation differences | [2] | (876) |  | 2,241
Charged directly to other comprehensive income | [2] |  |  |
Income statement charge | [2] | (33,055) |  | 117,197
At the end of the year | [2] | 710,995 |  | 744,926
Effect of adoption of new standards | [2] |  |  |
Deferred tax liabilities, inventory [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | 34,934 |  | 36,891
Effect of adoption of new standards |  |  |  |
Translation differences |  |  |  | (2)
Charged directly to other comprehensive income |  |  |  |
Income statement charge |  | (9,886) |  | (1,955)
At the end of the year |  | 25,048 |  | 34,934
Effect of adoption of new standards |  |  |  |
Deferred tax liabilities, intangible and other assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | 55,585 | [2] | 152,281
Effect of adoption of new standards | [2] | 35 |  |
Translation differences |  | 92 | [2] | 23
Charged directly to other comprehensive income |  | 288 | [2] | (583)
Income statement charge |  | (9,468) |  | (96,136)
At the end of the year | [2] | 46,532 |  | 55,585
Effect of adoption of new standards | [2] | 35 |  |
Deferred tab liabilities [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
At the beginning of the year |  | 835,445 |  | 814,660
Effect of adoption of new standards |  | 35 |  |
Translation differences |  | (784) |  | 2,262
Charged directly to other comprehensive income |  | 288 |  | (583)
Income statement charge |  | (52,409) |  | 19,106
At the end of the year |  | 782,575 |  | $ 835,445
Effect of adoption of new standards |  | $ 35 |  |
[1] | As of December 31, 2018, the net unrecognized deferred tax assets amount to $127.3 million.
[2] | Includes the effect of currency translation on tax base (See Note 7).

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