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Earnings Per Share (EPS) and Common Stock (Tables)
 3 Months Ended
Dec. 31, 2011
Earnings Per Share and Common Stock  
Earnings Per Share Basic and Diluted
Calculation of Basic and Diluted EPS
December 31,
2011
 
January 1,
2011
 
(in thousands, except per share data)
Net income
$
22,123

 
$
13,260

Weighted average shares outstanding—Basic
117,715

 
116,827

Dilutive effect of employee stock options, restricted shares and restricted stock units
2,861

 
4,323

Weighted average shares outstanding—Diluted
120,576

 
121,150

Earnings per share—Basic
$
0.19

 
$
0.11

Earnings per share—Diluted
$
0.18

 
$
0.11