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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2017
Brazil        
Commitments and contingencies        
Accrual for Environmental Loss Contingencies $ 500,000     $ 1,500,000
Payments to settle environmental loss contingency 600,000      
Brazil | Reduction of gross receipts tax        
Commitments and contingencies        
Estimated potential recoveries 10,000,000      
Recovery of part of claim   $ 2,700,000 $ 631,000  
Brazil | Reduction of gross receipts tax | Cost of Sales        
Commitments and contingencies        
Recovery of part of claim   1,700,000    
Brazil | Reduction of gross receipts tax | Interest Income        
Commitments and contingencies        
Recovery of part of claim   $ 1,000,000.0    
Indemnification agreements        
Commitments and contingencies        
Liabilities recorded under indemnification agreements $ 0   $ 0