Revenues - Revenues By Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 166,442	$ 130,837	$ 454,863	$ 359,009
United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	143,380	110,809	368,390	298,736
Other countries
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 23,062	$ 20,028	$ 86,473	$ 60,273
Revenue from Contract with Customer | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Revenue from Contract with Customer | Geographic Concentration Risk | United States
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	86.00%	85.00%	81.00%	83.00%
Revenue from Contract with Customer | Geographic Concentration Risk | Other countries
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	14.00%	15.00%	19.00%	17.00%