Inventories (Tables)

9 Months Ended

Sep. 28, 2014

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following (in thousands):

	September 28, 2014		December 31, 2013
Raw materials and assembled parts	$	60,219	$	61,235
Service inventories, estimated current requirements	13,208		15,197
Work-in-process	83,475		75,883
Finished goods	33,492		29,410
Total current inventories	$	190,394	$	181,725
Non-current inventories	$	53,845	$	62,104