Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue:
Subscription and support	$ 43,200	$ 31,554
Professional services and other	4,791	2,918
Total revenue	47,991	34,472
Cost of revenue:
Subscription and support	10,391	7,105
Professional services and other	3,594	2,575
Total cost of revenue	13,985	9,680
Gross profit	34,006	24,792
Operating expenses:
Sales and marketing	23,188	18,227
Research and development	14,660	11,182
General and administrative	8,291	6,986
Total operating expenses	46,139	36,395
Loss from operations	(12,133)	(11,603)
Other income (expense):
Interest income	238	76
Interest expense	(9)	(14)
Other income, net	175	23
Total other income (expense), net	404	85
Loss before income taxes	(11,729)	(11,518)
Income tax expense	(139)	(83)
Net loss	$ (11,868)	$ (11,601)
Net loss per common share, basic and diluted	$ (0.37)	$ (0.40)
Weighted average common shares used in computing basic and diluted net loss per common share	32,370	28,727