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FAIR VALUE MEASUREMENT (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
FAIR VALUE MEASUREMENT    
Transfers of financial assets from level 1 to 2 $ 0  
Transfers of financial assets from level 2 to 1 0  
Transfers of financial assets into 3 0  
Transfers of financial assets from 3 0  
Transfers of financial liabilities from level 1 to 2 0  
Transfers of financial liabilities from level 2 to 1 0  
Transfers of financial liabilities into 3 0  
Transfers of financial liabilities from 3 0  
Long term debt    
FAIR VALUE MEASUREMENT    
Total financial liabilities 1,724,100 $ 1,824,300
Fair value measurement at Recurring basis    
FAIR VALUE MEASUREMENT    
Total financial assets 369,359 422,486
Total financial liabilities 22,089 904
Fair value measurement at Recurring basis | Fair value of derivative financial instruments    
FAIR VALUE MEASUREMENT    
Total financial liabilities 22,089 904
Fair value measurement at Recurring basis | Trade receivables..    
FAIR VALUE MEASUREMENT    
Total financial assets 13,545 11,867
Fair value measurement at Recurring basis | Equity securities (FVTOCI)    
FAIR VALUE MEASUREMENT    
Total financial assets 268,950 282,356
Fair value measurement at Recurring basis | Share purchase warrants (FVPL)    
FAIR VALUE MEASUREMENT    
Total financial assets 74,559 92,747
Fair value measurement at Recurring basis | Fair value of derivative financial instruments    
FAIR VALUE MEASUREMENT    
Total financial assets 12,305 35,516
Fair value measurement at Recurring basis | Level 1    
FAIR VALUE MEASUREMENT    
Total financial assets 244,876 255,316
Fair value measurement at Recurring basis | Level 1 | Equity securities (FVTOCI)    
FAIR VALUE MEASUREMENT    
Total financial assets 244,876 255,316
Fair value measurement at Recurring basis | Level 2    
FAIR VALUE MEASUREMENT    
Total financial assets 124,483 167,170
Total financial liabilities 22,089 904
Fair value measurement at Recurring basis | Level 2 | Fair value of derivative financial instruments    
FAIR VALUE MEASUREMENT    
Total financial liabilities 22,089 904
Fair value measurement at Recurring basis | Level 2 | Trade receivables..    
FAIR VALUE MEASUREMENT    
Total financial assets 13,545 11,867
Fair value measurement at Recurring basis | Level 2 | Equity securities (FVTOCI)    
FAIR VALUE MEASUREMENT    
Total financial assets 24,074 27,040
Fair value measurement at Recurring basis | Level 2 | Share purchase warrants (FVPL)    
FAIR VALUE MEASUREMENT    
Total financial assets 74,559 92,747
Fair value measurement at Recurring basis | Level 2 | Fair value of derivative financial instruments    
FAIR VALUE MEASUREMENT    
Total financial assets $ 12,305 $ 35,516