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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 28, 2014
Stock-Based Compensation [Abstract]  
Summary of recognized stock-based compensation expense
The following table summarizes stock-based compensation expense recognized:

 
 
Fiscal quarters ended
  
Six fiscal months ended
 
 
 
June 28, 2014
  
June 29, 2013
  
June 28, 2014
  
June 29, 2013
 
 
 
  
  
  
 
Stock options
 
$
-
  
$
6
  
$
-
   
18
 
Restricted stock units
  
804
   
(2,646
)
  
1,614
   
(1,718
)
Phantom stock units
  
-
   
-
   
131
   
108
 
Total
 
$
804
  
$
(2,640
)
 
$
1,745
   
(1,592
)

Schedule of unrecognized compensation cost, nonvested awards
The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at June 28, 2014 (amortization periods in years):

 
 
Unrecognized Compensation Cost
  
Weighted Average Remaining Amortization Periods
 
 
 
  
 
Stock options
 
$
-
   
0.0
 
Restricted stock units
  
10,766
   
1.4
 
Phantom stock units
  
-
   
0.0
 
Total
 
$
10,766
     

Schedule of share-based compensation, restricted stock units award activity
RSU activity under the 2007 Program as of June 28, 2014 and changes during the six fiscal months then ended are presented below (number of RSUs in thousands):

 
 
Number of RSUs
  
Weighted Average Grant-date Fair Value per Unit
 
Outstanding:
 
  
 
January 1, 2014
  
1,059
  
$
13.40
 
Granted
  
336
   
13.48
 
Vested*
  
(146
)
  
15.87
 
Cancelled or forfeited
  
(102
)
  
17.45
 
Outstanding at June 28, 2014
  
1,147
  
$
12.75
 
 
        
Expected to vest at June 28, 2014
  
760
     
________
* The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.

Schedule of share-based compensation arrangement by share-based units, vested and expected to vest
The number of performance-based RSUs that are scheduled to vest on January 1, 2015 is evaluated based on the full achievement of the defined target performance criteria.  The number of performance-based RSUs that are scheduled to vest on January 1, 2016 and January 1, 2017 increases ratably based on the achievement of defined performance criteria between the established target and maximum levels.  RSUs with performance-based vesting criteria are expected to vest as follows (number of RSUs in thousands):

Vesting Date
 
Expected to Vest
  
Not Expected to Vest
  
Total
 
January 1, 2015
  
-
   
276
   
276
 
January 1, 2016
  
111
   
111
   
222
 
January 1, 2017
  
192
   
-
   
192
 

Schedule of share-based compensation, phantom stock units, Activity
Phantom stock unit activity under the phantom stock plan as of June 28, 2014 and changes during the six fiscal months then ended are presented below (number of phantom stock units in thousands):

 
 
Number of units
  
Grant-date Fair Value per Unit
 
Outstanding:
 
  
 
January 1, 2014
  
107
  
 
Granted
  
10
  
$
13.12
 
Dividend equivalents issued
  
1
     
Redeemed for common stock
  
-
     
Outstanding at June 28, 2014
  
118