Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v2.4.0.8
Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock-Based Compensation Activity
A summary of stock-based compensation activity and changes for the thirty-nine weeks ended September 29, 2013 are as follows:
 
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(Year)
 
Aggregate
Intrinsic
Value
Outstanding and expected to vest at December 30, 2012
1,052,861

 
$
5.28

 
 
 
 
Granted
145,907

 
28.97

 
 
 
 
Exercised
(463,613
)
 
3.07

 
 
 
 
Forfeited
(2,702
)
 
12.18

 
 
 
 
Outstanding and expected to vest at September 29, 2013
732,453

 
$
11.37

 
5.73
 
$
16,757

Exercisable at September 29, 2013
467,978

 
$
5.60

 
4.47
 
$
13,406

Weighted Average Assumptions
The weighted-average grant date fair value of options granted during the thirty-nine weeks ended September 29, 2013 was $11.02 per share, as estimated at the date of grant using the Black-Scholes pricing model with the following weighted-average assumptions: 
 
 
Dividend yield
0
%
Expected volatility
43
%
Risk-free rate of return
0.79
%
Expected life (in years)
5