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Balance Sheet Components - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 53,874	$ 53,874		$ 46,234
Less accumulated depreciation and amortization	(15,641)	(15,641)		(13,174)
Property and equipment, net	38,233	38,233		33,060
Impairment of long-lived assets	2,000	2,011	$ 0
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	1,289	1,289		1,224
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	15,475	15,475		12,778
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	868	868		1,136
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	34,146	34,146		26,701
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,096	$ 2,096		$ 4,395

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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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