Balance Sheet Components Balance Sheet Components - Deferred Revenue (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Product Information [Line Items]
Deferred extended warranty revenue	$ 3,072	$ 2,902
Deferred training revenue	3,793	3,115
Deferred product revenue	13,316	1,891
Total deferred revenue	20,181	$ 7,908
Applicators [Member]
Product Information [Line Items]
Deferred product revenue	$ 8,200