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Note 12 - Foreign Exchange	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Foreign Currency Disclosure [Text Block]	12. Foreign exchange: A foreign exchange gain amounting to $0.7  million has been recorded in general and administrative expenses during the year ended December  31, 2017. A foreign exchange loss amounting to $0.1  million has been recorded in general and administrative expenses during the year ended December  31, 2016. A foreign exchange loss amounting to $0.3  million has been recorded in general and administrative expenses during the year ended December  31, 2015.

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- Definition

The entire disclosure for foreign currency transactions and translation. This may include description of foreign currency transactions, foreign currency gains and losses, explanation of change in cumulative translation adjustment, description of effect of subsequent foreign currency exchange rate change, cumulative translation adjustment movement, foreign currency translation adjustment by component movement, translation adjustment for net investment hedge movement, adjustment for long-term intercompany transactions, schedule of long-term intercompany balances and any other foreign currency transactions and translation related items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-URI http://asc.fasb.org/topic&trid=2175825

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