Balance Sheet Components - Intangible Assets, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 86,800
Accumulated Amortization	(3,559)
Net Carrying Amount	83,241	$ 0
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	60,400
Accumulated Amortization	(1,573)
Net Carrying Amount	$ 58,827
Developed technology | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	7 years 9 months 14 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,200
Accumulated Amortization	(1,819)
Net Carrying Amount	$ 24,381
Customer relationships | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	2 years 9 months 14 days
Trademark and trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 200
Accumulated Amortization	(167)
Net Carrying Amount	$ 33
Trademark and trade name | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	14 days