Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Revenues	$ 111,443	$ 84,970
Cost of revenue:
Cost of revenues	34,254	25,307
Gross profit	77,189	59,663
Operating expenses:
Research and development	25,847	15,956
Sales and marketing	49,634	39,319
General and administrative	21,388	15,234
Total operating expenses	96,869	70,509
Operating loss	(19,680)	(10,846)
Other (income) expense:
Interest income	(1,442)	(767)
Interest expense	0	111
Other (income) expense, net	(3,372)	48
Total other (income) expense, net	(4,814)	(608)
Loss before income taxes	(14,866)	(10,238)
Provision for (benefit from) income taxes	417	116
Net loss	$ (15,283)	$ (10,354)
Net loss per share attributable to common shareholders, basic and diluted	$ (0.20)	$ (0.15)
Weighted average shares of common stock outstanding, basic and diluted	77,904	68,381
Subscription and Returns
Revenue:
Revenues	$ 105,546	$ 78,231
Cost of revenue:
Cost of revenues	29,517	20,978
Professional Services
Revenue:
Revenues	5,897	6,739
Cost of revenue:
Cost of revenues	$ 4,737	$ 4,329