Inventories (Tables)

12 Months Ended

Dec. 29, 2012

Inventory Disclosure [Abstract]

Component of inventories

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