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Earnings Per Common Share (Tables)
 6 Months Ended
Jun. 30, 2012
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 June 30,
 
For the six months ended June 30,
 
2012
 
2011
 
2012
 
2011
Net income/(loss) attributable to Golden Star shareholders
$
2,483

 
$
(5,048
)
 
$
11,597


$
880

 
 
 
 
 
 



Weighted average number of shares (millions)
258.8

 
258.6

 
258.8


258.6

Dilutive securities:
 
 
 
 
 


Options (millions)
0.1

 
—

 
—


0.6

Convertible debentures
—

 
—

 
—


—

Weighted average number of diluted shares (millions)
258.9

 
258.6

 
258.8

 
259.2

 
 
 
 
 
 
 
 
Net income/(loss) per share attributable to Golden Star shareholders:
 
 
 
 
 
 
 
Basic
$
0.010

 
$
(0.020
)
 
$
0.045

 
$
0.003

Diluted
$
0.010

 
$
(0.020
)
 
$
0.045

 
$
0.003