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Stockholders' Equity and Stock-Based Compensation (Tables)
 12 Months Ended
Jan. 02, 2016
Stockholders' Equity and Stock-Based Compensation [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
all stock option activity as of January 2, 2016 and changes during the year ended is as follows:

        
 
Number of
shares
 
Weighted-avg.
exercise price
per share
 
Weighted-avg.
remaining
contractual life
Options outstanding at December 29, 2012
722,617

 
$
8.07

 
4.8 years
Granted
195,634

 
16.53

 
 
Exercised
(12,000
)
 
2.67

 
 
Forfeited
—

 
—

 
 
Expired
—

 
—

 
 
Options outstanding at December 28, 2013
906,251

 
9.97

 
5.0 years
Granted
163,078

 
19.94

 
 
Exercised
(343,550
)
 
6.18

 
 
Forfeited
(29,603
)
 
16.89

 
 
Expired
—

 
—

 
 
Options outstanding at January 3, 2015
696,176

 
13.88

 
6.2 years
Granted
422,386

 
14.76

 
 
Exercised
(131,653
)
 
4.13

 
 
Forfeited
(136,177
)
 
16.68

 
 
Expired
—

 
—

 
 
Options outstanding at January 2, 2016
850,732

 
$
15.38

 
7.7 years
Options exercisable at January 2, 2016
485,777

 
$
15.22

 
6.7 years
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair value of each stock option grant under the Company's stock option plan was estimated on the date of grant using the Black Scholes option-pricing model with the following weighted average assumptions and results for fiscal 2015, 2014 and 2013.

        
Weighted Average
 
2015
2014
2013
Expected dividend yield
 
0.0%
0.0%
0.0%
Risk-free interest rate
 
1.82%
1.77%
1.01%
Expected term
 
5.75 years
5.75 years
5.75 years
Expected volatility
 
38.0%
43.7%
59.8%
Fair value of options granted
 
$5.59
$8.93
$9.04
Schedule of Nonvested Share Activity [Table Text Block]
A summary of the Company’s non-vested stock, restricted stock unit and performance share unit awards as of January 2, 2016, and changes during the year ended is as follows:

        
 
Non-Vested, RSU and PSU
Shares
 
Weighted Average
Grant Date
Fair Value
Stock awards outstanding December 29, 2012
836,024

 
$
12.26

Shares granted
519,575

 
16.89

Shares vested
(527,725
)
 
12.73

Shares forfeited
(6,667
)
 
7.36

Stock awards outstanding December 28, 2013
821,207

 
14.93

Shares granted
1,436,658

 
20.73

Shares vested
(861,772
)
 
16.43

Shares forfeited
(138,920
)
 
19.90

Stock awards outstanding January 3, 2015
1,257,173

 
19.98

Shares granted
524,225

 
14.47

Shares vested
(714,626
)
 
17.91

Shares forfeited
(32,581
)
 
19.65

Stock awards outstanding January 2, 2016
1,034,191

 
$
18.63
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
A summary of the Company’s non-employee director restricted stock awards as of January 2, 2016, and changes during the year ended is as follows:

        
 
Restricted stock and Restricted Stock Unit
Shares
 
Weighted Average
Grant Date
Fair Value
Stock awards outstanding December 29, 2012
108,458

 
$
9.59

Restricted shares granted
21,780

 
16.53

Restricted shares where the restriction lapsed
—

 
—

Restricted shares forfeited
—

 
—

Stock awards outstanding December 28, 2013
130,238

 
10.75

Restricted shares granted
25,678

 
19.67

Restricted shares where the restriction lapsed
—

 
—

Restricted shares forfeited
—

 
—

Stock awards outstanding January 3, 2015
155,916

 
12.22

Restricted shares granted
46,910

 
13.80

Restricted shares where the restriction lapsed
(50,322
)
 
12.25

Restricted shares forfeited
—

 
—

Stock awards outstanding January 2, 2016
152,504

 
$
12.69