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CONTINGENT LIABILITIES (Sao Paulo State Revenue Services) (Details) - Sao Paulo State Revenue Services [Member]
 12 Months Ended
Jul. 13, 2010
USD ($)
Jul. 13, 2010
BRL (R$)
Dec. 31, 2014
USD ($)
Dec. 31, 2014
BRL (R$)
Loss Contingencies [Line Items]        
Possible state value added tax rate 25.00% 25.00%    
Income tax deficiency notice, amount | $ $ 22,100,000      
Tax deficiency, penalties | $ 40,000,000      
Tax deficiency, interest | $ $ 18,200,000      
Aggregate sum claimed pursuant to tax deficiency | $     $ 82,700,000  
Brazil, Brazil Real        
Loss Contingencies [Line Items]        
Income tax deficiency notice, amount | R$   R$ 36,499,984    
Tax deficiency, penalties | R$   66,143,446    
Tax deficiency, interest | R$   R$ 30,282,420    
Aggregate sum claimed pursuant to tax deficiency | R$       R$ 220,000,000