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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 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 years ended December 31,
 
2012
 
2011
 
2010
Net loss attributable to Golden Star shareholders
$
(9,490
)
 
$
(2,075
)
 
$
(11,229
)
 
 
 
 
 
 
Weighted average number of shares (millions)
258.9

 
258.6

 
258.0

Dilutive securities:
 
 
 
 
 
Options
—

 
—

 
—

Deferred stock units
—

 
—

 
—

Convertible debentures
—

 
—

 
—

Weighted average number of diluted shares (millions)
258.9

 
258.6

 
258.0

 
 
 
 
 
 
Net loss per share attributable to Golden Star shareholders:
 
 
 
 
 
Basic
$
(0.04
)
 
$
(0.01
)
 
$
(0.04
)
Diluted
$
(0.04
)
 
$
(0.01
)
 
$
(0.04
)