Inventories (Tables)

3 Months Ended

Mar. 29, 2015

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following (in thousands):

	March 29, 2015		December 31, 2014
Raw materials and assembled parts	$	55,373	$	61,644
Service inventories, estimated current requirements	11,992		12,398
Work-in-process	77,171		76,402
Finished goods	18,966		25,996
Total current inventories	$	163,502	$	176,440
Non-current inventories	$	49,019	$	50,731