Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 94,340	$ 73,185
Cost of revenue:
Total cost of revenue	27,714	19,973
Total gross profit	66,626	53,212
Operating expenses:
Research and development	24,202	17,865
Sales and marketing	48,145	35,138
General and administrative	14,099	9,953
Total operating expenses	86,446	62,956
Loss from operations	(19,820)	(9,744)
Other income (expense), net:
Interest income	1,048	1,731
Interest expense	(3,462)	(3,229)
Other income (expense), net	(447)	(206)
Loss before income taxes	(22,681)	(11,448)
Provision for income taxes	243	225
Net loss	$ (22,924)	$ (11,673)
Net loss per share, basic and diluted (in dollars per share)	$ (0.46)	$ (0.24)
Weighted-average common shares outstanding, basic and diluted (in shares)	50,127,310	47,827,939
Products [Member]
Revenue:
Total revenue	$ 87,549	$ 65,845
Cost of revenue:
Total cost of revenue	21,256	14,369
Professional Services [Member]
Revenue:
Total revenue	6,791	7,340
Cost of revenue:
Total cost of revenue	$ 6,458	$ 5,604