Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Products	$ 14,639	$ 11,013	$ 28,284	$ 21,628
Maintenance and support	6,253	4,474	12,052	8,619
Professional services	4,898	2,393	9,025	4,369
Total revenue	25,790	17,880	49,361	34,616
Cost of revenue:
Products	1,339	1,022	2,885	2,261
Maintenance and support	1,412	1,152	2,622	2,140
Professional services	3,976	2,036	7,712	3,667
Total cost of revenue	6,727	4,210	13,219	8,068
Total gross profit	19,063	13,670	36,142	26,548
Operating expenses:
Research and development	8,131	6,328	14,545	12,448
Sales and marketing	14,457	11,561	27,687	22,565
General and administrative	5,048	3,174	9,101	6,656
Total operating expenses	27,636	21,063	51,333	41,669
Loss from operations	(8,573)	(7,393)	(15,191)	(15,121)
Other income (expense), net:
Interest income (expense), net	(737)	(703)	(1,422)	(1,398)
Other income (expense), net	163	4	(142)	45
Loss before income taxes	(9,147)	(8,092)	(16,755)	(16,474)
Provision for income taxes	97	95	171	191
Net loss	(9,244)	(8,187)	(16,926)	(16,665)
Accretion of preferred stock to redemption value	(23,788)	(15,464)	(35,061)	(27,642)
Net loss attributable to common stockholders, basic and diluted (note 6)	$ (33,032)	$ (23,651)	$ (51,987)	$ (44,307)
Net loss per share attributable to common stockholders, basic and diluted	$ (2.59)	$ (1.85)	$ (4.10)	$ (3.48)
Weighted-average common shares outstanding, basic and diluted	12,745,051	12,762,938	12,693,900	12,740,052
Pro forma net loss per share attributable to common stockholders, basic and diluted (note 6)	$ (0.60)		$ (0.80)
Pro forma weighted-average common shares outstanding, basic and diluted (note 6)	38,797,656		38,746,505