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INVESTMENTS (Details) - Schedule of Condensed Balance Sheet - USD ($)
$ in Thousands
Jan. 31, 2018
Dec. 31, 2017
Jan. 31, 2017
Dec. 31, 2016
Jan. 31, 2016
Condensed Balance Sheet Statements, Captions [Line Items]          
Current assets $ 239,034   $ 226,517    
Total assets 478,864   454,024   $ 414,685
Current liabilities 21,865   22,519    
Long-term liabilities 25,073   43,231    
Total liabilities $ 121   $ 100    
Big River [Member]          
Condensed Balance Sheet Statements, Captions [Line Items]          
Current assets   $ 149,436   $ 175,299  
Non current assets   261,443   311,450  
Total assets   410,879   486,749  
Current liabilities   49,130   50,798  
Long-term liabilities   10,599      
Total liabilities   59,729   50,798  
Noncontrolling interests   $ 38,412   $ 52,336