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Note 22 - Non-current Allowances and Provisions - Deducted From Non-current Receivables (Details) - Non-current allowance for receivables [member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Statement Line Items [Line Items]    
Values at the beginning of the year $ (913) $ (1,112)
Translation differences 106 199
Used 166
Values at the end of the year $ (641) $ (913)