XML 38 R28.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-Based Compensation (Tables)
9 Months Ended
Sep. 07, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Weighted-Average Assumptions to Estimated Fair Value of Stock Options Granted
The Company estimated the fair value of employee stock options on the date of grant using the Black-Scholes model. The estimated weighted-average fair value for each option granted was $5.22 and $5.36 for the 36 weeks ended September 7, 2013 and September 8, 2012, respectively, with the following weighted-average assumptions:
 
12 Weeks Ended
 
36 Weeks Ended
 
September 7,
2013
 
September 8,
2012
 
September 7,
2013
 
September 8,
2012
Expected market price volatility (1)
30.8
%
 
36.9
%
 
33.3
%
 
37.8
%
Risk-free interest rate (2)
1.1
%
 
0.5
%
 
0.6
%
 
0.6
%
Dividend yield (3)
1.0
%
 
1.3
%
 
1.2
%
 
1.3
%
Expected term (4)
4 years

 
4 years

 
4 years

 
4 years

(1)
Based on historical volatility of the Company’s common stock. The expected volatility is based on the daily percentage change in the price of the stock over the four years prior to the grant.
(2)
Represents the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant.
(3)
Represents the Company’s cash dividend yield for the expected term.
(4)
Represents the period of time that options granted are expected to be outstanding. As part of the determination of the expected term, the Company concluded that all employee groups exhibit similar exercise and post-vesting termination behavior.