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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Aug. 31, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Jul. 31, 2015
Loss Contingencies [Line Items]          
Interest on reserve for AD/CVD duties   $ 128 $ 0    
US Customs Notice of Action | Unfavorable Regulatory Action | Threatened Litigation          
Loss Contingencies [Line Items]          
Requested payment of AD/CVD cash deposits         $ 1,100
AD/CVD cash deposits to be remitted or bond posted $ 1,100        
Loss contingency reserve       $ 6,400  
Interest on reserve for AD/CVD duties   $ 128