Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021
Property Plant And Equipment [Line Items]
Total property and equipment		$ 16,043	$ 17,850
Less accumulated depreciation and amortization	$ (3,797)	(3,187)
Total property and equipment, net	14,053	12,856	$ 14,053
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	3,465	3,462
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	543	544
Research Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	10,567	9,633
Computers and Software
Property Plant And Equipment [Line Items]
Total property and equipment	130	130
Construction in Progress
Property Plant And Equipment [Line Items]
Total property and equipment	$ 3,145	$ 2,274