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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Concentrations of Risk Percentage

For each significant customer, revenue as a percentage of total revenue for the periods presented and accounts receivable, net as a percentage of total accounts receivable, net as of the dates presented were as follows:

		Revenue						Accounts Receivable, Net
		Year Ended December 31,						December 31,
		2021		2020		2019		2021		2020
Customer A		*%		*%		13.9%		*%			19.1	%
Customer B		*		*		*		11.3		12.2
Genentech, Inc. and Roche Group		41.9		55.8		42.1		*		*
* less than 10%

Summary of Useful Lives Assigned to Property and Equipment

Useful lives assigned to property and equipment are as follows:

Laboratory equipment		3 years to 7 years
Leasehold improvements		Shorter of estimated useful life or remaining lease term
Computer equipment and software		3 years to 5 years
Furniture and office equipment		3 years to 10 years

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Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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