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Stock-Based Compensation (Tables)
 9 Months Ended 12 Months Ended
Oct. 01, 2013
Jan. 01, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Schedule of Valuation Assumptions  
The weighted-average assumptions used in the model were as follows:
 
 
2012
 
2011
 
2010
Risk-free interest
 
0.4
%
 
1.1
%
 
1.9
%
Expected life (years)
 
3.4

 
3.7

 
4.5

Expected dividend yield
 
—

 
—

 
—

Volatility
 
32.7
%
 
26.2
%
 
29.5
%
Weighted-average Black-Scholes fair value per share at date of grant
 
$
2.84

 
$
1.89

 
$
1.72
Schedule of Share-based Compensation, Stock Options, Activity
The following table presents information related to the Stock Incentive Plan (in thousands, except for share and per share amounts):
 
Fiscal Quarter Ended
 
Three Fiscal Quarters Ended
 
October 1, 2013
 
October 2, 2012
 
October 1, 2013
 
October 2, 2012
Outstanding, beginning of period
3,474,398

 
2,789,212

 
2,973,168

 
2,621,017

Granted(1)
—

 
8,655

 
538,273

 
176,850

Exercised
—

 
—

 
—

 
—

Canceled
1,961

 
129,949

 
39,004

 
129,949

Outstanding, end of period
3,472,437

 
2,667,918

 
3,472,437

 
2,667,918

Weighted average fair market value on option grant date
N/A
 
$
1.25

 
$
5.81

 
$
1.21

Stock based compensation expense(2)
$
131

 
$
315

 
$
4,065

 
$
921

Capitalized stock based compensation expense
$
15

 
$
21

 
$
56

 
$
57

_____________
(1)
The stock options granted in the first three quarters of 2013 included 403,900 awards to two executive officers of which 50% vested at IPO and the remaining vest annually over four years on the anniversary of the grant in equal installments.
(2)
Stock-based compensation expense includes $45,000 related to the Employee Stock Purchase Plan in the third quarter and first three quarters of 2013 and is included in general and administrative expense on the consolidated statements of income. Of the total stock-based compensation recognized in the first three quarters of 2013, $2.0 million related to accelerated vesting of outstanding stock options at the IPO and $1.2 million related to stock options granted at the IPO to 2 executive officers of which 50% were vested at the time of grant.
The tables below summarize the option activity under the Plan:
 
 
Shares
 
Weighted-
Average
Exercise Price
Outstanding—December 29, 2009
 
4,348,407

 
$
4.96

Granted
 
736,734

 
5.86

Forfeited
 
(85,762
)
 
5.04

Exercised
 
(59,990
)
 
2.46

Cash settled
 
(4,939,389
)
 
5.13

Outstanding at Merger
 
—

 
—

Granted
 
2,420,861

 
8.67

Forfeited
 
—

 
—

Exercised
 
—

 
—

Outstanding—December 28, 2010
 
2,420,861

 
8.67

Granted
 
283,307

 
8.67

Forfeited
 
(81,330
)
 
8.67

Exercised
 
(1,815
)
 
8.67

Outstanding—January 3, 2012
 
2,621,023

 
8.67

Granted
 
516,473

 
11.27

Forfeited
 
(164,329
)
 
8.68

Exercised
 
—

 
—

Outstanding—January 1, 2013
 
2,973,167

 
$
9.12


 
 
Shares
 
Weighted-
Average
Exercise Price
 
Weighted-
Average
Remaining
Years of
Contractual
Life
 
Aggregate
Intrinsic Value(1)
(in thousands)
Outstanding as of January 1, 2013
 
2,973,167

 
$
9.12

 
8.10
 
$
8,971

Vested and expected to vest
 
2,823,099

 
9.06

 
8.05
 
8,656

Exercisable as of January 1, 2013
 
1,229,341

 
8.67

 
7.48
 
4,261

_____________
(1)
Aggregate intrinsic value represents the amount by which estimated fair value of the Company's stock ($12.13 as of January 1, 2013) exceeds the exercise price of the option as of January 1, 2013.
Schedule of Grants in Period  
The table below reflects disclosure as recommended by the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation for stock option grants in the twelve month period preceding the latest consolidated balance sheet presented:
Grant Date
 
Number of
Options
Granted
 
Exercise Price
 
Common Stock
Fair Value Per Share
at Grant Date
April 10, 2012
 
15,868

 
9.53

 
9.53

May 14, 2012
 
152,328

 
9.53

 
9.53

September 20, 2012
 
8,655

 
10.40

 
10.40

December 6, 2012
 
339,622

 
12.13

 
12.13
Schedule of Exercise Price Range  
The following table summarizes information about stock options outstanding at January 1, 2013:

 
 
Outstanding
 
Exercisable
Range of Exercise Price
 
Number of
Options
 
Weighted-
Average
Remaining
Years of
Contractual
Life
 
Weighted-
Average
Exercise
Price
 
Number of
Options
 
Weighted-
Average
Exercise
Price
$8.67-$12.13
 
2,973,167

 
8.10
 
$
9.12

 
1,229,341

 
$
8.67