Balance Sheet Components - Property and Equipment Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Property and Equipment, Net
Total property and equipment, gross	$ 16,390	$ 15,603
Less: accumulated depreciation	(13,170)	(11,886)
Total property and equipment, net	3,220	3,717
Depreciation and amortization expense	1,600	1,200
Manufacturing equipment
Property and Equipment, Net
Total property and equipment, gross	14,199	13,494
Computer and network equipment
Property and Equipment, Net
Total property and equipment, gross	602	520
Furniture and fixtures
Property and Equipment, Net
Total property and equipment, gross	113	113
Leasehold improvements
Property and Equipment, Net
Total property and equipment, gross	$ 1,476	$ 1,476