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Earnings Per Share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
The following is a reconciliation of the numerator and denominator used for the computation of basic and diluted net income (loss) per common share.
 
 
For the Three Months Ended
March 31,
 
2013
 
2012
 
 
 
(Restated)
 
 
 
 
 
(In thousands, except per share data)
Net loss attributable to Quicksilver
$
(59,707
)
 
$
(211,565
)
Basic income allocable to participating securities (1)
—

 
—

Loss available to shareholders
$
(59,707
)
 
$
(211,565
)
Weighted average common shares – basic
171,826

 
169,939

Effect of dilutive securities (2)
—

 
—

Weighted average common shares – diluted
171,826

 
169,939

Earnings (loss) per common share – basic
$
(0.35
)
 
$
(1.24
)
Earnings (loss) per common share – diluted
$
(0.35
)
 
$
(1.24
)

(1) 
Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
(2) 
For the three months ended March 31, 2013, 5.0 million shares associated with our stock options and 0.9 million shares associated with our unvested restricted stock units were antidilutive; therefore, excluded from the diluted share calculation. For the three months ended March 31, 2012, 5.5 million shares associated with our stock options and 0.3 million shares associated with our unvested restricted stock units were antidilutive; therefore, excluded from the diluted share calculation.