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Note 34 - Related Parties - Key Management Personnel and Entities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement Line Items [Line Items]      
Key management salaries and bonuses $ 2,362 $ 2,476 $ 2,041
Cash-settled share-based expense* [1] 723 261 1,164
$ 3,085 $ 2,737 $ 3,205
[1] Amount inclusive of $107 (2018: $43) classified as production costs.