Inventories (Tables)

6 Months Ended

Jul. 01, 2012

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following (in thousands):

	July 1, 2012		December 31, 2011
Raw materials and assembled parts	$	71,251	$	68,105
Service inventories, estimated current requirements	15,593		13,978
Work-in-process	81,360		66,275
Finished goods	25,093		33,652
Total current inventories	$	193,297	$	182,010
Non-current inventories	$	64,029	$	57,575