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Intangible Assets (Tables)
 6 Months Ended
Jun. 29, 2013
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Summary of Finite-lived intangible assets
Finite-lived intangible assets as of June 29, 2013, and December 29, 2012, consisted of the following (in thousands):

 
 
Adjusted cost as of
 
Accumulated amortization as of
 
Net carrying amount as of
 
June 29, 2013
 
June 29, 2013
 
June 29, 2013
Developed technology
$
17,659

 
$
(9,558
)
 
$
8,101

Customer relationships
9,529

 
(8,978
)
 
551

Brand names
1,927

 
(1,650
)
 
277

Patented technology
2,252

 
(1,955
)
 
297

Trademark
80

 
(80
)
 
—

Total
$
31,447

 
$
(22,221
)
 
$
9,226


 
 
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
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
At June 29, 2013, estimated future amortization expense of intangible assets were as follows (in thousands)
 
Fiscal years
 
Amount
2013
 
$
1,607

2014
 
3,006

2015
 
2,324

2016
 
1,856

2017
 
227

Thereafter
 
206

Total future amortization expense
 
$
9,226