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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 99,721	$ 67,424	$ 190,971	$ 129,151
Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%	100.00%	100.00%
Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%	100.00%	100.00%
Channel partners
Disaggregation of Revenue [Line Items]
Revenue	$ 10,153	$ 5,663	$ 19,312	$ 11,859
Channel partners | Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	10.00%	8.00%	10.00%	9.00%
Direct customers
Disaggregation of Revenue [Line Items]
Revenue	$ 89,568	$ 61,761	$ 171,659	$ 117,292
Direct customers | Sales Channel Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	90.00%	92.00%	90.00%	91.00%
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 48,478	$ 33,227	$ 92,693	$ 63,966
United States | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	49.00%	49.00%	49.00%	50.00%
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Revenue	$ 25,912	$ 15,997	$ 49,018	$ 30,623
Europe, Middle East, and Africa | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	26.00%	24.00%	26.00%	24.00%
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 18,589	$ 13,610	$ 36,193	$ 25,789
Asia Pacific | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	19.00%	20.00%	19.00%	20.00%
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 6,742	$ 4,590	$ 13,067	$ 8,773
Other | Geographic Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
Percentage of Revenue	6.00%	7.00%	6.00%	6.00%

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