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Net Loss Per Share
 12 Months Ended
Dec. 31, 2011
Earnings Per Share [Abstract]  
Net Loss Per Share
Net Income (Loss) Per Share

Net income (loss) per share was computed by dividing net income (loss) by the weighted average number of common shares outstanding for the years ended December 31, 2011, 2010, and 2009 are as follows:
 
Years Ended December 31,
 
2011
 
2010
 
2009
Net income (loss)
$
(28,730
)
 
$
10,653

 
$
(2,434
)
Weighted average shares - basic
56,592

 
48,902

 
45,194

Net income (loss) per share - basic
$
(0.51
)
 
$
0.22

 
$
(0.05
)
Weighted average shares - diluted
56,592

 
50,544

 
45,194

Net income (loss) per share - diluted
$
(0.51
)
 
$
0.21

 
$
(0.05
)

The following outstanding Company securities were excluded from the above calculations of net loss per share because their impact would have been anti-dilutive:
 
Years Ended December 31,
 
2011
 
2010
 
2009
Common stock options
3,127

 
—

 
965