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LITIGATION (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2015
Loss Contingencies [Line Items]          
Accrual for Environmental Loss Contingencies, Revision in Estimates   $ 1,050      
Accrual for Environmental Loss Contingencies     $ 11,500    
Legal Appeal Bond       $ 6,000  
Judicial Ruling [Member]          
Loss Contingencies [Line Items]          
Loss Contingency Accrual         $ 1,620
Unfavorable Regulatory Action [Member]          
Loss Contingencies [Line Items]          
Accrual for Environmental Loss Contingencies, Revision in Estimates $ 5,450