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INVESTMENTS IN AFFILIATES - Components (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]      
Cost $ 374,675 $ 374,729  
Dividend (105,401) (68,127)  
Equity in net earnings of other affiliates 43,992 28,141  
Share of other comprehensive (loss) income in affiliate (245) 629  
Equity in net assets of affiliates $ 313,021 $ 335,372 $ 350,918