Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v2.4.0.6
Stock-Based Compensation (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 4 Months Ended
Apr. 21, 2013
Apr. 15, 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) 0.70% 0.70%
Expected years until exercise 4 years 1 month 6 days 4 years 1 month 6 days
Expected stock volatility (as a percent) 44.30% 52.80%
Weighted average Black-Scholes fair value per share at date of grant (in dollars per share) $ 14.84 $ 14.60
Shares    
Outstanding, beginning of period (in shares) 705  
Granted (in shares) 124  
Exercised (in shares) (114)  
Cancelled (in shares) (12)  
Outstanding, end of period (in shares) 703  
Restricted stock units
    
Shares    
Outstanding, beginning of period (in shares) 180  
Granted (in shares) 30  
Exercised (in shares) (24)  
Cancelled (in shares) (3)  
Outstanding, end of period (in shares) 183  
Restricted Stock
    
Shares    
Outstanding, beginning of period (in shares) 4  
Exercised (in shares) (4)  
Performance Stock Units
    
Shares    
Outstanding, beginning of period (in shares) 35  
Granted (in shares) 6  
Exercised (in shares) (21)  
Outstanding, end of period (in shares) 20