BALANCE SHEET COMPONENTS - Schedule of prepaid expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Equity offering costs	$ 132	$ 0
Software licenses	82	152
Insurance	52	64
Professional services	30	30
Rent	29	11
Prepaid inventory	0	111
Other	35	20
Total prepaid expenses and other current assets	$ 360	$ 388