Stockholders Equity - Summary of Recognized Stock-based Compensation Expense for Employees and Non-employees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation			$ 1,603	$ 1,732
Employees and Non-employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 547	$ 313	1,603	1,732
Cost of Sales | Employees and Non-employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	6		18
Selling and Marketing | Employees and Non-employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	234	121	647	954
General and Administrative | Employees and Non-employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	285	190	869	694
Research and Development | Employees and Non-employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 22	$ 2	$ 69	$ 84