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Intangible Assets (Tables)
 12 Months Ended
Dec. 28, 2013
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Summary of Finite-lived intangible assets
Finite-lived intangible assets as of December 28, 2013 and December 29, 2012 consist of the following (in thousands):
 
 
Adjusted cost as of December 28, 2013
 
Accumulated amortization as of December 28, 2013
 
Net carrying amount as of December 28, 2013
Developed technology
$
18,095

 
$
(11,032
)
 
$
7,063

Customer relationships
9,573

 
(9,263
)
 
310

Brand names
1,927

 
(1,700
)
 
227

Patented technology
2,252

 
(1,988
)
 
264

Trademark
80

 
(80
)
 
—

Total
$
31,927

 
$
(24,063
)
 
$
7,864

 
 
Adjusted cost as of December 29, 2012
 
Accumulated amortization as of December 29, 2012
 
Net carrying amount as of December 29, 2012
Developed technology
$
17,700

 
$
(8,277
)
 
$
9,423

Customer relationships
9,538

 
(8,643
)
 
895

Brand names
1,927

 
(1,599
)
 
328

Patented technology
2,252

 
(1,922
)
 
330

Trademark
80

 
(76
)
 
4

Total
$
31,497

 
$
(20,517
)
 
$
10,980
Estimated future amortization expense
The estimated future amortization expense as of December 28, 2013 is as follows (in thousands):
 
 
Fiscal Years
Amounts
2014
$
3,097

2015
2,405

2016
1,924

2017
232

2018
140

Thereafter
66

Total amortization
$
7,864