Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v2.4.0.8
Stock-Based Compensation (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 4 Months Ended 6 Months Ended
Jul. 14, 2013
Apr. 21, 2013
Jul. 14, 2013
Jul. 08, 2012
Stock Options
        
Weighted-average fair value of non-qualified stock options and the related assumptions used in the pricing model        
Risk-free interest rate (as a percent) 1.00%   0.70% 0.70%
Expected years until exercise 4 years 1 month 6 days   4 years 2 months 12 days 4 years 1 month 6 days
Expected stock volatility (as a percent) 44.20%   44.40% 52.80%
Weighted average Black-Scholes fair value per share at date of grant (in dollars per share) $ 21.14   $ 15.19 $ 14.60
Shares        
Outstanding, beginning of period (in shares) 703 705 705  
Granted (in shares) 5 124    
Exercised (in shares) (115) (114)    
Cancelled (in shares) (25) (12)    
Outstanding, end of period (in shares) 568 703 568  
Restricted stock units
        
Shares        
Outstanding, beginning of period (in shares) 183 180 180  
Granted (in shares) 16 30    
Exercised (in shares) (40) (24)    
Cancelled (in shares) (6) (3)    
Outstanding, end of period (in shares) 153 183 153  
Restricted Stock
        
Shares        
Outstanding, beginning of period (in shares)   4 4  
Exercised (in shares)   (4)    
Performance Stock Units
        
Shares        
Outstanding, beginning of period (in shares)   35 35  
Granted (in shares)   6    
Exercised (in shares)   (21)    
Outstanding, end of period (in shares) 20 20 20