BALANCE SHEET COMPONENTS - SCHEDULE OF PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
BALANCE SHEET COMPONENTS
Prepaid expenses	$ 1,503	$ 1,485
Prepaid research and development	478	5,233
Other current assets	295	240
Total prepaid expenses and other current assets	$ 2,276	$ 6,958