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OTHER OPERATING INCOME (EXPENSES), NET (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Other operating income (expenses), net [Abstract]      
Results of sundry assets $ 1,895 $ 1,190 $ 1,270
Provision for legal claims and other matters 7,625    
Other operating income 4,136 0 0
Other operating income 13,656 1,190 1,270
Provision for legal claims and other matters   (2,783) (1,678)
Other operating expense 0 (14,647) (9,517)
Other operating expense 0 (17,430) (11,195)
Other operating (expenses) income, net $ 13,656 $ (16,240) $ (9,925)