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. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock-Based Compensation Activity Related to Stock Options
A summary of stock-based compensation activity related to stock options for the thirty-nine weeks ended September 28, 2014 are as follows:
 
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(Years)
 
Aggregate
Intrinsic
Value
Outstanding and expected to vest at December 29, 2013
729,874

 
$
11.45

 
 
 
 
Granted
10,553

 
34.68

 
 
 
 
Exercised
(55,223
)
 
5.82

 
 
 
 
Forfeited
(2,125
)
 
21.03

 
 
 
 
Outstanding and expected to vest at September 28, 2014
683,079

 
$
12.23

 
5.10
 
$
13,144

Exercisable at September 28, 2014
477,185

 
$
7.49

 
3.94
 
$
11,392

Weighted Average Assumptions
The weighted-average grant date fair value of options granted during the thirty-nine weeks ended September 28, 2014 was $12.06 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
37
%
Risk-free rate of return
1.58
%
Expected life (in years)
5

Summary of Stock-Based Compensation Activity Related to Restricted Stock Units
A summary of stock-based compensation activity related to restricted stock units for the thirty-nine weeks ended September 28, 2014 are as follows:
 
Shares
 
Weighted
Average
Fair Value
Outstanding and expected to vest at December 29, 2013
—

 
$
—

Granted
87,428

 
40.36

Outstanding and expected to vest at September 28, 2014
87,428

 
$
40.36