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BALANCE SHEET COMPONENTS - Schedule of accounts receivable, net (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 363		$ 219
Allowance for uncollectible accounts	(2)	$ (8)	(18)	$ (10)	$ (4)	$ (4)
Accounts receivable, net	$ 361		$ 201

X

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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