Balance Sheet Components - Schedule of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts payable	$ 4,044	$ 2,781
Manufacturing production costs	811	506
Legal fees	305	596
Audit fees	12	318
Consulting fees	176	256
Insurance	64	0
Deposit liability	0	2,950
Other	786	488
Accrued expenses	2,154	5,114
Total Accounts payable and accrued expenses	$ 6,198	$ 7,895