Stock-Based Compensation - Summary of Classification of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock -based compensation	$ 3,038	$ 561	$ 7,542	$ 1,612
Cost of Sales
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock -based compensation	399	101	957	272
Research and Development
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock -based compensation	857	114	2,187	338
Sales and Marketing
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock -based compensation	165	79	373	225
General and Administrative
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock -based compensation	$ 1,617	$ 267	$ 4,025	$ 777