Balance Sheet Details (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of inventories
Raw materials and purchased parts	$ 21,591	$ 23,042
Work-in-process	3,667	2,522
Finished goods	19,234	23,311
Reserves	(3,345)	(4,019)
Total inventories	$ 41,147	$ 44,856