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Capital Structure
6 Months Ended
Dec. 31, 2018
Capital Structure [Abstract]  
Capital Structure

11. Capital structure

     The following table presents a reconciliation between the number of shares, net of treasury, presented in the unaudited condensed consolidated statement of changes in equity during the six months ended December 31, 2018 and 2017, respectively, and the number of shares, net of treasury, excluding non-vested equity shares that have not vested during the six months ended December 31, 2018 and 2017, respectively:

  December 31, December 31,  
  2018 2017  
 
Number of shares, net of treasury:      
Statement of changes in equity 56,833,925 56,832,370  
Less: Non-vested equity shares that have not vested (Note 13) 860,817 (911,856 )
Number of shares, net of treasury excluding non-vested      
equity shares that have not vested 55,973,108 55,920,514