Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following (in thousands):

	December 31,
	2013		2012
Raw materials and assembled parts	$	61,235	$	67,985
Service inventories, estimated current requirements	15,197		15,898
Work-in-process	75,883		81,104
Finished goods	29,410		27,553
Total current inventories	$	181,725	$	192,540
Non-current inventories	$	62,104	$	65,116