BALANCE SHEET COMPONENTS - Schedule of allowance for uncollectible accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of beginning of year	$ 6	$ 0
Increase in provision	2	8
Amounts written off, less recoveries	(4)	(2)
Balance as of end of year	$ 4	$ 6