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Inventories
12 Months Ended
Dec. 29, 2012
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories are stated at the lower of cost (which approximates actual cost on a first-in, first-out basis), or market. Inventories consist of the following (in thousands):




 
At
 
December 29,
2012
 
December 31,
2011
Raw materials and sub-assemblies
$
22,477

 
$
24,963

Work in process
5,812

 
11,143

Finished goods
11,370

 
16,154

Inventories
39,659

 
52,260

Inventories-delivered systems
2,274

 
1,637

Total inventories
$
41,933

 
$
53,897


The Company reflects the cost of systems that were invoiced upon shipment but deferred for revenue recognition purposes separate from its inventory held for sale as "Inventories-delivered systems."