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BASIC AND DILUTED LOSS PER COMMON SHARE
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Basic and Diluted Loss Per Common Share
BASIC AND DILUTED LOSS PER COMMON SHARE
Basic and diluted loss per share
The calculation of basic and diluted earnings per share after adjustment for the effects of all potential dilutive common shares, calculated as follows:
 
Three months ended
June 30,
 
Six months ended
June 30,
 
2017
 
2016
 
2017
 
2016
Loss attributable to shareholders
$
(4,470
)
 
$
(10,408
)
 
$
(14,978
)
 
$
(19,216
)
Basic and diluted weighted average number
 
 
 
 
 
 
 
of common shares outstanding
70,423,642

 
53,043,512

 
69,597,088

 
50,282,647

Loss per common share
$
(0.06
)
 
$
(0.20
)
 
$
(0.22
)
 
$
(0.38
)

For the three and six months ended June 30, 2017, 9.10 million (June 30, 2016 - 6.76 million) options and warrants and the potential conversion of the Debentures have been excluded from the calculation as their effect would have been anti-dilutive.