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BASIC AND DILUTED LOSS PER COMMON SHARE
 6 Months Ended
Jun. 30, 2018
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,
 
2018
 
2017
 
2018
 
2017
Income (loss) attributable to shareholders
$
7,149

 
$
(4,470
)
 
$
(3,673
)
 
$
(14,978
)
Basic weighted average number of common shares outstanding
77,513,180

 
70,423,642

 
77,131,395

 
69,597,088

Income (loss) per common share
$
0.09

 
$
(0.06
)
 
$
(0.05
)
 
$
(0.22
)
 
 
 
 
 
 
 
 
 
Three months ended
June 30,
 
Six months ended
June 30,
 
2018
 
2017
 
2018
 
2017
Income (loss) attributable to shareholders
$
7,149

 
$
(4,470
)
 
$
(3,673
)
 
$
(14,978
)
Diluted weighted average number of common shares outstanding
86,534,484

 
70,423,642

 
77,131,395

 
69,597,088

Income (loss) per common share
$
0.08

 
$
(0.06
)
 
$
(0.05
)
 
$
(0.22
)

For the six months ended June 30, 2018, 9.02 million (June 30, 2017 - 9.10 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.