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FINANCIAL RISK MANAGEMENT (Financial assets and liabilities at fair value) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value $ 2,265,461 $ 1,432,536
Financial liabilities, at fair value 505 1,889
Level 1    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 2,056,237 1,360,585
Financial liabilities, at fair value 0 0
Level 2    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 165,207 44,130
Financial liabilities, at fair value 505 1,889
Level 3    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 44,017 27,821
Financial liabilities, at fair value 0 0
Derivative financial instruments    
Disclosure of fair value measurement of assets [line items]    
Financial liabilities, at fair value 505 1,889
Derivative financial instruments | Level 1    
Disclosure of fair value measurement of assets [line items]    
Financial liabilities, at fair value 0 0
Derivative financial instruments | Level 2    
Disclosure of fair value measurement of assets [line items]    
Financial liabilities, at fair value 505 1,889
Derivative financial instruments | Level 3    
Disclosure of fair value measurement of assets [line items]    
Financial liabilities, at fair value 0 0
Cash and cash equivalents    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 772,953 692,529
Cash and cash equivalents | Level 1    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 772,953 692,529
Cash and cash equivalents | Level 2    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 0 0
Cash and cash equivalents | Level 3    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 0 0
Other investments    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 1,492,281 735,654
Other investments | Level 1    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 1,283,284 668,056
Other investments | Level 2    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 164,980 39,777
Other investments | Level 3    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 44,017 27,821
Derivative financial instruments    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 227 4,353
Derivative financial instruments | Level 1    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 0 0
Derivative financial instruments | Level 2    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value 227 4,353
Derivative financial instruments | Level 3    
Disclosure of fair value measurement of assets [line items]    
Financial assets, at fair value $ 0 $ 0