Inventories (Tables)

3 Months Ended

Mar. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following (in thousands):

	March 30, 2014		December 31, 2013
Raw materials and assembled parts	$	62,191	$	61,235
Service inventories, estimated current requirements	14,516		15,197
Work-in-process	84,187		75,883
Finished goods	31,657		29,410
Total current inventories	$	192,551	$	181,725
Non-current inventories	$	59,295	$	62,104