BALANCE SHEET DETAILS - CURRENT ASSETS AND CURRENT LIABILITIES - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Prepaid expenses:
Deposits on inventory	$ 1,437	$ 2,146
Prepaid income tax	362	362
Prepaid insurance	530	1,110
Prepaid rent	399	372
Prepaid equipment	331	331
Prepaid other	172	214
Other current assets:
Other	0	18
Total	$ 3,231	$ 4,553