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Intangible Assets (Tables)
 12 Months Ended
Dec. 29, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Summary of Finite-lived intangible assets
Finite-lived intangible assets as of December 29, 2012 and December 31, 2011 consist of the following (in thousands):
 
 
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

 
 
Adjusted cost as of December 31, 2011
 
Accumulated amortization as of December 31, 2011
 
Net carrying amount as of December 31, 2011
Developed technology
$
17,489

 
$
(5,600
)
 
$
11,889

Customer relationships
9,517

 
(8,164
)
 
1,353

Brand names
1,927

 
(1,499
)
 
428

Patented technology
2,252

 
(1,856
)
 
396

In-process research and development
316

 
—

 
316

Trademark
80

 
(68
)
 
12

Total
$
31,581

 
$
(17,187
)
 
$
14,394
Estimated future amortization expense
The estimated future amortization expense as of December 29, 2012 is as follows (in thousands):
 
 
Fiscal Years
Amounts
2013
$
3,315

2014
3,024

2015
2,330

2016
1,878

2017
227

Thereafter
206

Total amortization
$
10,980