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Earnings Per Share (Tables)
 9 Months Ended
Oct. 27, 2013
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Common Share
The computation of basic and diluted earnings per common share is as follows:
 
Three Months Ended
 
Nine Months Ended
(in thousands, except per share amounts)
October 27,
2013
 
October 28,
2012
 
October 27,
2013
 
October 28,
2012
Net income
$
12,453

 
$
16,590

 
$
46,342

 
$
28,821

 
 
 
 
 
 
 
 
Weighted average common shares outstanding - basic
67,792

 
65,996

 
67,454

 
65,622

Dilutive effect of employee equity incentive plans
1,079

 
1,469

 
1,365

 
1,684

Weighted average common shares outstanding - diluted
68,871

 
67,465

 
68,819

 
67,306

 
 
 
 
 
 
 
 
Basic earnings per common share
$
0.18

 
$
0.25

 
$
0.69

 
$
0.44

Diluted earnings per common share
$
0.18

 
$
0.25

 
$
0.67

 
$
0.43

 
 
 
 
 
 
 
 
Anti-dilutive shares not included in the above calculations
598

 
1,053

 
456

 
1,163