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Agreements - Gilead (Details) $ in Thousands		1 Months Ended	6 Months Ended
	Dec. 19, 2018 item	Jan. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)
Agreements
Revenue earned			$ 33,193
Gilead
Agreements
Number of programs | item	3
Option exercise period	90 days
Revenue earned		$ 33,200
Master collaboration agreement, term	3 years

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Represents the number of programs under collaborative arrangement.

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Period of master collaboration agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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