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Note 22 - Current Allowances and Provisions - Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Sales risks [member]    
Statement Line Items [Line Items]    
Values at the beginning of the year $ 11,396 $ 13,885
Translation differences (103) 247
Additional provisions 2,638 4,238
Reclassifications
Used (7,117) (6,974)
Values at the end of the year 6,814 11,396
Miscellaneous other provisions [member]    
Statement Line Items [Line Items]    
Values at the beginning of the year 20,934 8,871
Translation differences (2,205) 227
Additional provisions 6,463 9,432
Reclassifications 2,406 7,591
Used (10,129) (5,187)
Values at the end of the year 17,469 20,934
Provision for current liabilities [member]    
Statement Line Items [Line Items]    
Values at the beginning of the year 32,330 22,756
Translation differences (2,308) 474
Additional provisions 9,101 13,670
Reclassifications 2,406 7,591
Used (17,246) (12,161)
Values at the end of the year $ 24,283 $ 32,330