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EQUITY SECURITIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
EQUITY SECURITIES    
Equity securities $ 86,252 $ 76,532
Fair value of securities sold 7,800 17,500
Net gain/loss on securities sold 2,100 (1,300)
Orla Mining Ltd    
EQUITY SECURITIES    
Equity securities 27,125 13,563
White Gold Corp    
EQUITY SECURITIES    
Equity securities 18,735 25,029
Other    
EQUITY SECURITIES    
Equity securities $ 40,392 $ 37,940