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Note 7 - Income Tax (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2016 | Dec. 31, 2017
Statement Line Items [Line Items] |  |  |
After tax effect of expense not deductible in determining profit (loss) | $ 59.0 |  |
Deferred tax expense (income) relating to origination and reversal of temporary differences |  | $ (45.0) |
ARGENTINA |  |  |
Statement Line Items [Line Items] |  |  |
Deferred tax expense (income) relating to tax rate changes or imposition of new taxes |  |  | $ (46.0)
UNITED STATES |  |  |
Statement Line Items [Line Items] |  |  |
Deferred tax expense (income) relating to tax rate changes or imposition of new taxes |  |  | $ (15.2)

X
- Definition The amount of deferred tax expense or income relating to the creation or reversal of temporary differences. [Refer: Temporary differences [member]; Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 80 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_80_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of deferred tax expense or income relating to tax rate changes or the imposition of new taxes. [Refer: Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 80 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_80_d&doctype=Standard -URIDate 2017-03-09 + Details
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