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BALANCE SHEET COMPONENTS - Other assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
OTHER ASSETS:
Less accumulated amortization of patents issued	$ (1,448)	$ (1,255)
Patents, net	3,592	3,748
Other	55	23
Other assets	3,647	3,771
Patent applications pending
OTHER ASSETS:
Patents	1,539	1,612
Patents issued
OTHER ASSETS:
Patents	$ 3,501	$ 3,391

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