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BASIC AND DILUTED LOSS PER COMMON SHARE (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares
The following is a reconciliation of weighted average shares outstanding for the years ended December 31, 2017, 2016, 2015, respectively:
 
Years Ended December 31,
 
2017
 
2016
 
2015
Issued common shares at beginning of period
66,205,153

 
46,519,132

 
19,677,552

  Effect of share options exercised
—

 
3,471

 
22,938

Effect of shares issued for settlement of vesting of restricted share units
831,393

 
196,242

 
—

  Effect of shares issued for exercise of share purchase warrants
—

 
—

 
173

  Effect of shares issued in business combinations
—

 
—

 
13,654,488

  Effect of shares issued in asset acquisitions
—

 
3,184,175

 
—

  Effect of shares issued in public offerings
3,822,561

 
6,538,038

 
28,821

Weighted average shares outstanding
70,859,107

 
56,441,058

 
33,383,972
Schedule of Earnings Per Share, Basic and Diluted
The calculation of diluted earnings per share after adjustment for the effects of all potential dilutive common shares, calculated as follows:
 
Years Ended December 31,
 
2017
 
2016
 
2015
Net loss
$
(27,766
)
 
$
(39,413
)
 
$
(82,217
)
Basic and diluted weighted average number
 
 
 
 
 
of common shares outstanding
70,859,107

 
56,441,058

 
33,383,972

Loss per common share
$
(0.39
)
 
$
(0.70
)
 
$
(2.46
)