Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue:
Products	$ 89,404	$ 63,407	$ 47,030
Maintenance and support	37,403	26,903	19,016
Professional services	30,630	20,216	10,834
Total revenue	157,437	110,526	76,880
Cost of revenue:
Products	12,447	6,921	4,557
Maintenance and support	7,105	6,002	4,495
Professional services	20,173	16,321	9,420
Total cost of revenue	39,725	29,244	18,472
Total gross profit	117,712	81,282	58,408
Operating expenses:
Research and development	47,955	38,746	25,570
Sales and marketing	90,524	67,365	49,007
General and administrative	28,282	21,731	12,972
Total operating expenses	166,761	127,842	87,549
Loss from operations	(49,049)	(46,560)	(29,141)
Other income (expense), net:
Interest income (expense), net	131	(2,523)	(2,802)
Other income (expense), net	(109)	(278)	(305)
Loss before income taxes	(49,027)	(49,361)	(32,248)
Income tax (benefit) expense	(27)	496	379
Net loss	(49,000)	(49,857)	(32,627)
Accretion of preferred stock to redemption value		(35,061)	(52,336)
Beneficial conversion charge relating to IPO participation payment		(14,161)
Net loss attributable to common stockholders	$ (49,000)	$ (99,079)	$ (84,963)
Net loss per share attributable to common stockholders, basic and diluted	$ (1.19)	$ (4.00)	$ (6.65)
Weighted-average common shares outstanding, basic and diluted	41,248,473	24,740,480	12,770,916