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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Restricted cash	$ 600		$ 600		$ 700
Cash and cash equivalents, restricted cash and restricted cash equivalents	$ 30,486	$ 53,746	$ 30,486	$ 53,746	$ 40,740	$ 130,426
Number of reportable segments \| segment			1
Customer Concentration Risk \| Genentech, Inc. \| Revenue Benchmark
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Concentration risk	100.00%	99.00%	100.00%	99.00%