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Earnings per Share
 3 Months Ended
Mar. 31, 2012
Earnings per Share

Note 2 — Earnings per Share

The following table sets forth the calculations of basic and diluted earnings per share (in thousands, except per share data):

 

 

 

 

 

 

 

 

 

 

Three Months Ended
March 31,

 

 

 

 

 

 

2012

 

2011

 

 

 

 

 

Numerator:

 

 

 

 

 

 

 

Net income used for calculating basic and diluted earnings per share

 

$

34,221

 

$

29,191

 

 

 

 

 

Denominator:

 

 

 

 

 

 

 

Weighted average number of common shares used in the calculation of basic earnings per share

 

 

93,416

 

 

96,442

 

Common stock equivalents associated with stock-based compensation plans (1)

 

 

2,783

 

 

3,009

 

 

 

 

 

Shares used in the calculation of diluted earnings per share

 

 

96,199

 

 

99,451

 

 

 

 

 

Basic earnings per share

 

$

0.37

 

$

0.30

 

 

 

 

 

Diluted earnings per share

 

$

0.36

 

$

0.29

 

 

 

 

 

 

 

 

 

(1)

For the three months ended March 31, 2012 and 2011, 0.6 million and 1.2 million of common stock equivalents, respectively, were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive.