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Disclosure of information on segments - Reconciliation of segment profit (loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of information on segments [Line Items]      
Profit (loss) from continued operations $ (155,748) $ (17,945) $ 154
Elimination Of Profit Of Equity Accounted Investees (129,570) (323,578) (63,777)
Elimination Of Profit of Inter Company Sales (89,006) (71,951) (74,637)
Elimination of Profit In Cost of Sales And Operating Expenses Of Intercompany 89,593 71,697 76,780
Elimination Of Share of Profit In subsidiaries And Associates 82,284 44,745 1,582
Elimination of Profits In others (1,080) 300 (3,932)
Operating Segments [Member]      
Disclosure of information on segments [Line Items]      
Profit (loss) from continued operations $ (107,969) $ 260,842 $ 64,138