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Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 772	$ 772	$ 780
Less: Accumulated depreciation	(65)	(64)	(58)
Property and equipment, net	707	708	722
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	689	689	689
Furniture [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17	17	5
Computers and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16	16	36
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 50	$ 50	$ 50

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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