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Earnings Per Share (Tables)
 6 Months Ended
Jul. 29, 2012
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Common Share
The computation of basic and diluted earnings per common share was as follows:
 
Three Months Ended
 
Six Months Ended
(in thousands, except per share amounts)
July 29,
2012
 
July 31,
2011
 
July 29,
2012
 
July 31,
2011
Net income
$
10,022

 
$
27,138

 
$
12,231

 
$
49,720

 
 
 
 
 
 
 
 
Weighted average common shares outstanding - basic
65,587

 
65,547

 
65,435

 
65,050

Dilutive effect of employee equity incentive plans
1,578

 
2,639

 
1,772

 
2,588

Weighted average common shares outstanding - diluted
67,165

 
68,186

 
67,207

 
67,638

 
 
 
 
 
 
 
 
Basic earnings per common share
$
0.15

 
$
0.41

 
$
0.19

 
$
0.76

Diluted earnings per common share
$
0.15

 
$
0.40

 
$
0.18

 
$
0.74

 
 
 
 
 
 
 
 
Anti-dilutive shares not included in the above calculations
1,472

 
492

 
1,190

 
666