Segment Reporting and Revenue Disaggregation (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)
Segment Reporting [Abstract]
Number of reporting segments | segment			1
Segment Reporting and Significant Customers
Revenue	$ 35,842	$ 20,862	$ 69,372	$ 55,144
United States
Segment Reporting and Significant Customers
Revenue	33,121	18,646	63,379	48,755
Europe
Segment Reporting and Significant Customers
Revenue	$ 2,721	$ 2,216	$ 5,993	$ 6,389