Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Products	$ 25,942	$ 20,145
Maintenance and support	10,802	8,381
Professional services	8,501	6,270
Total revenue	45,245	34,796
Cost of revenue:
Products	4,710	2,598
Maintenance and support	1,878	1,681
Professional services	5,676	4,433
Total cost of revenue	12,264	8,712
Total gross profit	32,981	26,084
Operating expenses:
Research and development	11,393	12,342
Sales and marketing	24,810	22,768
General and administrative	7,248	6,593
Total operating expenses	43,451	41,703
Loss from operations	(10,470)	(15,619)
Other income (expense), net:
Interest income (expense), net	169	(15)
Other income (expense), net	(115)	196
Loss before income taxes	(10,416)	(15,438)
Provision for income taxes	129	142
Net loss	$ (10,545)	$ (15,580)
Net loss per share, basic and diluted (in dollars per share)	$ (0.25)	$ (0.38)
Weighted-average common shares outstanding, basic and diluted	42,016,831	40,547,669