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EARNINGS / (LOSS) PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Loss Per Share  
Schedule of earning per share

    For the period ended  
    December 31,  
Basic earnings / (loss) per share   2017     2016     2015  
                   
Earnings / (loss) attributable to owners of the parent (ThUS$)     155,304       69,220       (219,274 )
                         
Weighted average number of shares, basic     606,407,693       546,559,599       545,547,819  
                         
Basic earnings / (loss) per share (US$)     0.25610       0.12665       (0.40193 )
                         

 

    For the period ended  
    December 31,  
Diluted earnings / (loss) per share   2017     2016     2015  
                   
Earnings / (loss) attributable to owners of the parent (ThUS$)     155,304       69,220       (219,274 )
                         
Weighted average number of shares, basic     606,407,693       546,559,599 (*)     545,547,819  
                         
Weighted average number of shares, diluted     606,407,693       546,559,599       545,547,819  
                         
Diluted earnings / (loss) per share (US$)     0.25610       0.12665       (0.40193 )

 

(*) In the calculation of diluted earnings per share have not been considered the compensation plan disclosed in Note 34 (a.1), because the average market price is lower than the price of options.