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COMMITMENTS AND CONTINGENCIES (Detail Textuals) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Long-term Purchase Commitment [Line Items]    
Maximum repurchase collateral amount $ 42,682 $ 38,334
Capital Addition Purchase Commitments    
Long-term Purchase Commitment [Line Items]    
Commitment for construction and acquisition of property, plant and equipment 15,718  
Pennsylvania    
Long-term Purchase Commitment [Line Items]    
Estimated cost of operations 23,712  
Cost incurred in manufacturing operations 17,260  
Tennessee    
Long-term Purchase Commitment [Line Items]    
Estimated cost of operations 15,233  
Cost incurred in manufacturing operations $ 2,504