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Earnings per share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of reconciliation of basic and diluted weighted average shares outstanding
The following sets forth the computation of basic and diluted earnings per share for the three and six months ended June 30, 2014 and 2013:
 

 
For the three months ended
 
For the six months ended
 

 
June 30, 2014
 
June 30, 2013
 
June 30, 2014
 
June 30, 2013
Weighted-average number of common shares outstanding:
 

 

 

 

 
Basic number of common shares outstanding
 
103,264,616

 
78,432,132

 
103,264,616

 
78,432,132

 
Dilutive effect of options
 
1,490,091

 
22,216

 
1,520,726

 
—

 
Dilutive effect of warrants
 
1,679,174

 
799,920

 
1,720,373

 
715,840

 
Diluted number of common shares outstanding
 
106,433,881

 
79,254,268

 
106,505,715

 
79,147,972

 

 

 

 

 

Basic net income per common share:
 

 

 

 

 
Net income
 
$
31,292

 
$
26,223

 
$
71,071

 
$
100,653

 
Net income allocated to participating shares
 
(200
)
 
(206
)
 
(452
)
 
(790
)
 
Net income available to common shareholders
 
$
31,092

 
$
26,017

 
$
70,619

 
$
99,863

 
Basic net income per common share
 
$
0.30

 
$
0.33

 
$
0.68

 
$
1.27

 Diluted net income per common share:
 

 

 

 

 
Net income
 
$
31,292

 
$
26,223

 
$
71,071

 
$
100,653

 
Income allocated to participating securities
 
(194
)
 
(204
)
 
(439
)
 
(783
)
 
Net income available to common shareholders
 
$
31,098

 
$
26,019

 
$
70,632

 
$
99,870

 
Diluted net income per common share
 
$
0.29

 
$
0.33

 
$
0.66

 
$
1.26