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Net Income Per Share (Notes)
6 Months Ended
Jun. 30, 2011
NET INCOME PER SHARE: [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
NET INCOME PER SHARE:


Basic Earnings Per Share ("EPS") is calculated by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if options or other securities with features that could result in the issuance of common stock were exercised or converted to common stock. The following tables reconcile the numerator and the denominator of the basic and diluted net income per share computation (in thousands, except for per share data):
 
For the Three Months Ended June 30,
 
2011
 
2010
 
Basic
 
Diluted
 
Basic
 
Diluted
Numerator:
 
 
 
 
 
 
 
Net income applicable to common shareholders
$
17,156


 
$
17,156


 
$
34,963


 
$
34,963


Denominator:
 
 
 
 
 
 
 
Weighted-average shares outstanding: Basic
45,369


 
45,369


 
43,971


 
43,971


Dilutive effect of stock options and RSUs


 
474


 
 
 
735


Weighted-average shares outstanding: Diluted
 
 
45,843


 
 
 
44,706


Earnings Per Share:
 
 
 
 
 
 
 
Net income: Basic
$
0.38


 
$
0.38


 
$
0.80


 
$
0.80


Dilutive effect of stock options and RSUs
 
 
(0.01
)
 
 
 
(0.02
)
Net income: Diluted
 
 
$
0.37


 
 
 
$
0.78




 
For the Six Months Ended June 30,
 
2011
 
2010
 
Basic
 
Diluted
 
Basic
 
Diluted
Numerator:
 
 
 
 
 
 
 
Net income applicable to common shareholders
$
40,495


 
$
40,495


 
$
83,790


 
$
83,790


Denominator:
 
 
 
 
 
 
 
Weighted-average shares outstanding: Basic
45,338


 
45,338


 
43,794


 
43,794


Dilutive effect of stock options and RSUs
 
 
520


 
 
 
752


Weighted-average shares outstanding: Diluted
 
 
45,858


 
 
 
44,546


Earnings Per Share:
 
 
 
 
 
 
 
Net income: Basic
$
0.89


 
$
0.89


 
$
1.91


 
$
1.91


Dilutive effect of stock options and RSUs
 
 
(0.01
)
 
 
 
(0.03
)
Net income: Diluted
 
 
$
0.88


 
 
 
$
1.88






For three months and six months ended June 30, 2011, options to purchase zero shares of common stock were excluded from the computation of diluted earnings per share because the exercise prices of these options were greater than the weighted-average market price of our common stock during these periods and, therefore, their effect would have been anti-dilutive.
For three months and six months ended June 30, 2010, options to purchase less than 0.1 million and approximately 0.1 million shares of common stock, respectively, were excluded from the computation of diluted earnings per share because the exercise prices of these options were greater than the weighted-average market price of our common stock during these periods and, therefore, their effect would have been anti-dilutive.
For three months and six months ended June 30, 2011, certain common stock issuable under warrants and convertible securities were excluded from the computation of diluted earnings per share, as the strike price and conversion price of these warrants and Notes, respectively, was greater than the weighted-average market price of our common stock during these periods and, therefore, their effect would have been anti-dilutive. There were no warrants or convertible securities outstanding for three or six months ended June 30, 2010.