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Note 2 - Basis for Preparation | 12 Months Ended
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Dec. 31, 2017
Statement Line Items [Line Items] |
Disclosure of basis of preparation of financial statements [text block] |
2 |  | Basis for preparation
(i) Statement of compliance The consolidated financial statements have been prepared on a going concern basis, in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). The consolidated financial statements were authorised for issue by the Board of Directors on March 21, 2018. (ii) Basis of measurement The consolidated financial statements have been prepared on the historical cost basis except for:
| · | equity-settled share-based payment arrangements measured at fair value on grant date;
| · | cash-settled share-based payment arrangement measured at fair value on the grant and re-measurement dates; and
| · | derivative financial instruments measured at fair value.
(iii) Functional currency These consolidated financial statements are presented in United States dollars (“$”), which is also the functional currency of the Company. All financial information presented in United States dollars have been rounded to the nearest thousand, unless indicated otherwise.

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- Definition The disclosure of the basis used for the preparation of the financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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