Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 95,088	$ 74,538
Cost of revenue	40,037	30,851
Gross profit	55,051	43,687
Operating expenses:
Research and development	15,189	10,546
Sales and marketing	30,160	21,701
General and administrative	14,658	11,762
Total operating expenses	60,007	44,009
Loss from operations	(4,956)	(322)
Other income (expense), net:
Interest expense	(3,484)	(3,396)
Interest income and other	1,072	1,745
Total other income (expense), net	(2,412)	(1,651)
Loss before income taxes	(7,368)	(1,973)
Provision for (benefit from) income taxes	69	(49)
Net loss	$ (7,437)	$ (1,924)
Net loss per share:
Basic and diluted (in usd per share)	$ (0.12)	$ (0.03)
Shares used in computing net loss per share:
Basic and diluted (in shares)	61,705	59,367
Comprehensive Loss:
Net loss	$ (7,437)	$ (1,924)
Other comprehensive income	1,054	174
Comprehensive loss	$ (6,383)	$ (1,750)