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EMPLOYEE STOCK PLANS (Tables)
 6 Months Ended
Jun. 29, 2014
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]  
Schedule of Stock Option Activity
The following table summarizes the stock option activity under all of our equity incentive plans for the six months ended June 29, 2014:
 
Number of Shares
 
Weighted-
Average
Exercise
Price
 
Weighted Average Remaining Term
 
Aggregated Intrinsic Value
 
(thousands)
 
(per share)
 
(years)
 
(thousands)
Outstanding as of December 31, 2013
4,993

 
$
2.18

 
 
 


Granted
611

 
$
2.42

 
 
 


Exercised
(277
)
 
$
0.93

 
 
 


Canceled or forfeited
(252
)
 
$
8.31

 
 
 


Outstanding as of June 29, 2014
5,075

 
$
1.98

 
4.8
 
$
2,614

Vested and expected to vest as of June 29, 2014
4,643

 
$
1.98

 
4.7
 
$
2,454

Exercisable as of June 29, 2014
3,054

 
$
2.05

 
4.1
 
$
1,800

 
 
 
 
 
 
 
 
The aggregate intrinsic value represents the pre-tax differences between the exercise price of stock options and the quoted market price of our stock on June 27, 2014 for all in-the-money options.
The following table provides information pertaining to our stock options for the six months ended June 29, 2014 and June 30, 2013 (in thousands, except weighted-average fair values):
 
Six Months Ended
 
June 29,
2014
 
June 30,
2013
Weighted-average fair value of options granted
$
1.24

 
$
0.80

Intrinsic value of options exercised
$
358

 
$
199

Cash received from options exercised
$
256

 
$
207
Schedule of Restricted Stock Units
The following table summarizes RSU activity under all of our equity incentive plans for the six months ended June 29, 2014:
 
Number of Shares
 
Weighted Average Grant Date Fair Value
 
(thousands)
 
(per share)
Outstanding as of December 31, 2013
429

 
$
1.45

Granted
655

 
$
2.43

Released
(135
)
 
$
1.64

Canceled or forfeited
(8
)
 
$
2.49

Outstanding as of June 29, 2014
941

 
$
2.10