Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Product	$ 21,128	$ 71,410
Service	37,903	34,139
Total revenue	59,031	105,549
Cost of revenue:
Cost of product revenue	14,751	46,178
Cost of service revenue	20,471	19,409
Total cost of revenue	35,222	65,587
Gross profit	23,809	39,962
Operating expenses:
Research and development, net	32,640	25,840
Sales and marketing	14,653	16,001
General and administrative	8,797	7,338
Total operating expenses	56,090	49,179
Loss from operations	(32,281)	(9,217)
Other income (expense), net	1,042	(436)
Interest income, net	878	584
Loss before income taxes	(30,361)	(9,069)
Income tax benefit	11,146	4,056
Net loss	$ (19,215)	$ (5,013)
Basic net loss per common share (in dollars per share)	$ (0.48)	$ (0.13)
Diluted net income loss per common share (in dollars per share)	$ (0.48)	$ (0.13)
Basic weighted average shares outstanding (in shares)	39,994	39,651
Diluted weighted average shares outstanding (in shares)	39,994	39,651