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EARNINGS PER SHARE
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
EARNINGS PER SHARE [Text Block]
EARNINGS PER SHARE:

 Basic earnings per share are calculated by dividing net income by the weighted-average shares of common stock outstanding during the period. Diluted earnings per share are calculated by dividing net income by the weighted-average shares of common stock and dilutive common equivalent shares outstanding during the period. Dilutive common equivalent shares included in this calculation consist of dilutive shares issuable upon the assumed exercise of outstanding common stock options, the assumed vesting of outstanding restricted stock units and performance based awards, and the assumed issuance of awards under the stock purchase plan, as computed using the treasury stock method.

A summary of the earnings per share calculation is as follows (in thousands, except per share amounts):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2011
 
2010
 
2011
 
2010
Basic earnings per share:
 
 
 
 
 
 
 
Net income
$
7,512

 
$
12,634

 
$
27,965

 
$
40,534

Weighted-average common shares
28,799

 
27,894

 
28,789

 
27,737

Basic earnings per share
$
0.26

 
$
0.45

 
$
0.97

 
$
1.46

Diluted earnings per share (1):

 

 

 

Net income
$
7,512

 
$
12,634

 
$
27,965

 
$
40,534

Weighted-average common shares
28,799

 
27,894

 
28,789

 
27,737

Effect of dilutive securities:

 

 

 

Employee stock plans
1,080

 
1,389

 
1,406

 
1,669

Diluted weighted-average common shares
29,879

 
29,283

 
30,195

 
29,406

Diluted earnings per share
$
0.25

 
$
0.43

 
$
0.93

 
$
1.38

_______________ 

(1)
The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share when they become contingently issuable per ASC 260-10, Earnings per Share and excludes such shares when they are not contingently issuable. The Company has excluded all performance-based awards underlying the fiscal 2011 and 2010 awards as those shares were not contingently issuable as of the end of the period.

Approximately 410,000 shares and 530,000 shares attributable to stock-based awards for the three months ended September 30, 2011 and 2010, respectively, and 276,000 shares and 139,000 shares attributable to stock-based awards for the nine months ended September 30, 2011 and 2010, respectively, were not included in the computation of diluted earnings per share for the periods then ended because they were determined to be anti-dilutive.