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Earnings Per Common Share (Tables)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Reconciliation between basic and diluted earnings per common share
The following table provides reconciliation between basic and diluted earnings per common share:
 
For the three months ended March 31,
 
2013
 
2012
Net loss attributable to Golden Star shareholders
$
(6,559
)

$
9,113

 
 



Weighted average number of shares (millions)
259.1


258.7

Dilutive securities:
 


Options
—


0.2

Deferred stock units
—

 
—

Convertible debentures
—


—

Weighted average number of diluted shares (millions)
259.1

 
258.9

 
 
 
 
Net loss per share attributable to Golden Star shareholders:
 
 
 
Basic
$
(0.03
)
 
$
0.04

Diluted
$
(0.03
)
 
$
0.04