Balance Sheet Components - Property and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Property and Equipment, net
Property and equipment, gross	$ 307,386	$ 307,386		$ 240,462
Less: Accumulated depreciation and amortization	(100,890)	(100,890)		(78,416)
Total Property and Equipment, net	206,496	206,496		162,046
Depreciation expense		26,400	$ 19,900
Cash paid for acquisition of intangible assets		12,500	10,495
Impairment charge		0	$ 0
Equipment pledged	150,000	$ 150,000
License
Property and Equipment, net
Intangible assets acquired	$ 30,000
Estimated useful life (in years)	6 years 6 months	6 years 6 months
Cash paid for acquisition of intangible assets	$ 12,500
Machinery and equipment
Property and Equipment, net
Property and equipment, gross	153,483	$ 153,483		117,076
Computer equipment
Property and Equipment, net
Property and equipment, gross	$ 3,439	$ 3,439		3,178
Useful Life	3 years	3 years
Software held for internal use
Property and Equipment, net
Property and equipment, gross	$ 17,574	$ 17,574		13,178
Useful Life	3 years	3 years
Leasehold improvements
Property and Equipment, net
Property and equipment, gross	$ 49,232	$ 49,232		48,569
Construction-in-process
Property and Equipment, net
Property and equipment, gross	$ 83,658	$ 83,658		$ 58,461
Minimum | Machinery and equipment
Property and Equipment, net
Useful Life	3 years	3 years
Maximum | Machinery and equipment
Property and Equipment, net
Useful Life	5 years	5 years