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NET INCOME (LOSS) PER COMMON SHARE
 6 Months Ended
Jun. 30, 2012
NET INCOME (LOSS) PER COMMON SHARE (Tables) [Abstract]  
NET INCOME (LOSS) PER COMMON SHARE [Text Block]
NOTE 10-NET INCOME (LOSS) PER COMMON SHARE
Basic net income (loss) per common share is calculated using the weighted‑average number of common shares outstanding during the period less the weighted‑average shares subject to repurchase. Diluted net income (loss) per common share gives effect to dilutive common stock subject to repurchase, stock options (calculated based on the treasury stock method), shares under the Company's ESPP and convertible debt (calculated using an as-if-converted method). Potentially dilutive securities are excluded from shares used in computing diluted net loss per common share if their effect would be anti-dilutive.
The following table sets forth a reconciliation of basic and diluted net income (loss) per common share (in thousands except per common share amounts):
 
 
Three Months Ended June 30,
  
Six Months Ended June 30,
 
 
 2012  2011  2012  2011 
Net income (loss)
 
$
30,891
  
$
(3,672
)
 
$
26,674
  
$
(3,633
)
Add effect of dilutive securities:
                
Interest on convertible notes
  
113
   
-
   
1,084
   
-
 
Adjusted net income (loss)
 
$
31,004
  
$
(3,672
)
 
$
27,758
  
$
(3,633
)
 
                
Shares used in computing basic net income (loss) per common share
  
70,161
   
69,504
   
70,069
   
70,700
 
Add effect of dilutive securities:
                
Employee stock compensation plans
  
117
   
-
   
112
   
-
 
Common stock subject to repurchase
  
335
   
-
   
303
   
-
 
Convertible notes
  
1,305
   
-
   
1,779
   
-
 
Shares used in computing diluted net income (loss) per common share
  
71,918
   
69,504
   
72,263
   
70,700
 
 
                
Basic net income (loss) per common share
 
$
0.44
  
$
(0.05
)
 
$
0.38
  
$
(0.05
)
 
                
Diluted net income (loss) per common share
 
$
0.43
  
$
(0.05
)
 
$
0.38
  
$
(0.05
)

The potential dilutive securities excluded from diluted earnings per common share were as follows (in thousands):
 
Three Months Ended June 30,
  
Six Months Ended June 30,
 
 
2012
  
2011
  
2012
  
2011
 
Employee stock compensation plans
  
5,780
   
6,311
   
5,785
   
6,311
 
Restricted stock subject to repurchase
  
2,026
   
1,628
   
2,057
   
1,628
 
Convertible notes
  
-
   
3,169
   
-
   
3,169
 
Total
  
7,806
   
11,108
   
7,842
   
11,108