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LITIGATION (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Dec. 31, 2015
Loss Contingencies [Line Items]    
Accrual for Environmental Loss Contingencies $ 6,500  
Accrual for Environmental Loss Contingencies, Revision in Estimates 1,050  
Judicial Ruling [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual   $ 1,620
Accrual for Environmental Loss Contingencies, Revision in Estimates 5,450  
Unfavorable Regulatory Action [Member]    
Loss Contingencies [Line Items]    
Loss Contingency Accrual $ 5,450