Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories are comprised of the following:

	June 30,		December 31,
	2014		2013
Component parts	$	14,804	$	12,203
Work-in-process and finished goods		10,888		13,450
Total	$	25,692	$	25,653