Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 91,250	$ 61,727
Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%
Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%
Channel partners
Disaggregation of Revenue [Line Items]
Revenue	$ 9,159	$ 6,196
Channel partners | Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	10.00%	10.00%
Direct customers
Disaggregation of Revenue [Line Items]
Revenue	$ 82,091	$ 55,531
Direct customers | Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	90.00%	90.00%
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 44,215	$ 30,739
United States | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	48.00%	50.00%
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Revenue	$ 23,106	$ 14,626
Europe, Middle East, and Africa | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	26.00%	24.00%
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 17,604	$ 12,179
Asia Pacific | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	19.00%	20.00%
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 6,325	$ 4,183
Other | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	7.00%	6.00%