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Property and Equipment (Tables)
12 Months Ended
Dec. 29, 2012
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment (in thousands):
  
 
December 29,
2012
 
December 31,
2011
Land
$
1,456

 
$
1,456

Buildings
27,827

 
27,809

Computer and test equipment
154,809

 
160,506

Office furniture and equipment
8,755

 
9,363

Leasehold and building improvements
16,460

 
13,484

 
209,307

 
212,618

Accumulated depreciation and amortization
(168,923
)
 
(172,188
)
 
$
40,384

 
$
40,430