Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 27, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock-Based Compensation Activity - Stock Options
A summary of stock-based compensation activity and changes related to stock options for the year ended December 27, 2015 are as follows:
 
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(Years)
 
Aggregate
Intrinsic
Value
Outstanding and expected to vest as of December 28, 2014
684,188

 
$
12.27

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(28,520
)
 
5.71

 
 
 
 
Forfeited
(21,256
)
 
31.79

 
 
 
 
Outstanding and expected to vest as of December 27, 2015
634,412

 
$
11.91

 
3.80
 
$
12,239

Exercisable as of December 27, 2015
517,796

 
$
8.99

 
3.11
 
$
11,483
Weighted Average Assumptions
The weighted-average grant date fair value of options granted was $11.12 and $11.05 per share, during the years ended, December 28, 2014 and December 29, 2013, respectively, as estimated at the date of grant using the Black-Scholes pricing model with the following weighted-average assumptions (no options were granted during the year ended December 27, 2015: 
    
 
2014
 
2013
Dividend yield
—
%
 
—
%
Expected volatility
37
%
 
43
%
Risk-free rate of return
1.58
%
 
0.80
%
Expected life (in years)
5

 
5
Summary of Stock-Based Compensation Activity - Restricted Stock Units
A summary of stock-based compensation activity and changes related to restricted stock units for the year ended December 27, 2015 are as follows:
 
Shares
 
Weighted
Average
Fair Value
 
Weighted
Average
Remaining
Contractual
Term
(Years)
Outstanding and expected to vest as of December 28, 2014
87,428

 
$
40.36

 
 
Granted
110,100

 
23.57

 
 
Vested
(23,590
)
 
39.75

 
 
Forfeited
(8,827
)
 
31.62

 
 
Outstanding and expected to vest as of December 27, 2015
165,111

 
$
29.72

 
2.77