EQUITY INCENTIVE PLAN - Summary of Stock-Based Compensation Expenses by Function (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Employee Service Stock-based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 4,111	$ 267
Cost of Sales
Employee Service Stock-based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	16
Research and Development
Employee Service Stock-based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	781	209
Sales and marketing
Employee Service Stock-based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	96	6
General and Administrative
Employee Service Stock-based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 3,218	$ 52