Nature of Operations and Summary of Significant Accounting Policies - Revenue Disaggregated by Geographic Market (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]
Net revenue	$ 35,243	$ 1,309	$ 76,752	$ 3,874
United States
Disaggregation of Revenue [Line Items]
Net revenue	34,139	0	73,833	0
International markets
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,104	$ 1,309	$ 2,919	$ 3,874