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Note 9 - Dividends Distribution (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 22, 2017 | Nov. 01, 2017 | May 24, 2017 | Nov. 23, 2016 | May 25, 2016 | Nov. 25, 2015 | May 20, 2015 | Nov. 27, 2014 | May 25, 2016 | May 20, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | May 03, 2017 | May 04, 2016 | May 06, 2015
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends recognised as distributions to owners per share |  | $ 0.13 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable, amount per ads |  | $ 0.26 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends recognised as distributions to owners | $ 153,000 |  | $ 484,000 |  |  |  |  |  | $ 531,200 | $ 531,200 | $ 508,020 | $ 536,720 | $ 534,192 |  |  |
Dividends payable, amount per share including interim dividend |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.41 | $ 0.45 | $ 0.45
Dividends payable, amount per ads including interim dividend |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.82 | $ 0.90 | $ 0.90
Dividends paid, ordinary shares per share | $ 0.13 |  | $ 0.28 | $ 0.13 | $ 0.30 | $ 0.15 | $ 0.30 | $ 0.15 |  |  |  |  |  |  |  |
Dividends paid, per ads | $ 0.26 |  | $ 0.56 | $ 0.26 | $ 0.60 | $ 0.30 | $ 0.60 | $ 0.30 |  |  |  |  |  |  |  |

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- Definition The amount of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 107 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_107&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of dividends paid per ordinary share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2017-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2017-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount, per share, of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 107 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_107&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of dividends paid per American Depositary Security "ADS". One ADS equals two shares. + References No definition available. + Details
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- Definition The per American Depositary Security "ADS" amount of a dividend declared or approved, but not yet paid. One ADS equals two shares. + References No definition available. + Details
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- Definition The per American Depositary Security "ADS" amount of a dividend payable including an interim dividend paid previously. One ADS equals two shares. + References No definition available. + Details
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- Definition The per share amount of a dividend payable including an interim dividend previously paid. + References No definition available. + Details
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- References No definition available. + Details
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