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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 29, 2012
Stock-Based Compensation [Abstract]  
Weighted average assumptions used in calculating fair value of stock options
The Company estimates the fair value of all stock option awards as of the grant date by applying the Black-Scholes-Merton option pricing model.  The use of this valuation model in the determination of compensation expense involves certain assumptions that are judgmental and/or highly sensitive including the expected life of the option, stock price volatility, risk-free interest rate, and dividend yield.  Additionally, forfeitures are estimated at the time of valuation and reduce expense ratably over the vesting period.  The forfeiture rate, which was estimated at 16.5 percent for 2012 and 17.0 percent for 2011 and 2010, is adjusted periodically based on actual forfeitures.  The weighted average of key assumptions used in determining the fair value of options granted and a discussion of the methodology used to develop each assumption are as follows:
 
   
2012
  
2011
  
2010
 
           
Expected term
 
6.5 years
  
6.3 years
  
6.3 years
 
Expected price volatility
  0.375   0.358   0.353 
Risk-free interest rate
  0.7%   1.7%   2.4% 
Dividend yield
  0.9%   1.1%   1.6% 
Summary of the stock option activity
The Company generally issues treasury shares when options are exercised.  A summary of the stock option activity and related information follows:

(Shares in thousands)
 
Options
   
Weighted Average Exercise Price
 
           
Outstanding at December 26, 2009
   
1,604
   
$
27.56
 
Granted
   
233
     
24.70
 
Exercised
   
(148
)
   
19.26
 
Expired
   
(24
)
   
30.78
 
                 
Outstanding at December 25, 2010
   
1,665
     
27.85
 
Granted
   
31
     
37.54
 
Exercised
   
(464
)
   
27.91
 
                 
Outstanding at December 31, 2011
   
1,232
     
28.07
 
Granted
   
46
     
43.58
 
Exercised
   
(575
)
   
28.29
 
              Canceled
   
(9
)
   
27.01
 
                 
Outstanding at December 29, 2012
   
694
     
28.93