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Note 27 - Share-based Expenses - Share-based Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 23, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement Line Items [Line Items]        
Cash-settled share-based payment expense   $ 689 $ 315 [1] $ 976 [1]
Equity-settled share-based payment expense $ 806 14 [1] 835 [1]
Restricted and performance share units [member]        
Statement Line Items [Line Items]        
Cash-settled share-based payment expense   616 218 853
Share option programmes [member]        
Statement Line Items [Line Items]        
Equity-settled share-based payment expense   14 29
Cash-settled awards [member]        
Statement Line Items [Line Items]        
Cash-settled share-based payment expense   73 97 123
Facilitation and advanced dividend loan modification [member]        
Statement Line Items [Line Items]        
Equity-settled share-based payment expense   $ 806
[1] The Group initially applied IFRS 16 on January 1, 2019, using the modified retrospective approach. Under this approach, comparative information is not restated. There was no cumulative effect of initially applying IFRS 16 to recognise in retained earnings at the date of initial application.